View DS33Z44_321856.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

DS33Z44 Quad Ethernet Mapper
www.maxim-ic.com
GENERAL DESCRIPTION
The DS33Z44 extends four 10/100 Ethernet LAN segments by encapsulating MAC frames in HDLC or X.86 (LAPS) for transmission over four PDH/TDM data streams. The serial links support bidirectional synchronous interconnect up to 52Mbps over xDSL, T1/E1/J1, T3/E3, V.35/Optical, OC-1/EC-1, or SONET/SDH Tributary. The device performs store-and-forward of packets with full wire-speed transport capability. The built-in Committed Information Rate (CIR) controllers provide fractional bandwidth allocation up to the line rate in increments of 512kbps. The DS33Z44 can operate with an inexpensive external processor, EEPROM or in a stand-alone hardware mode.
FEATURES
Four 10/100 IEEE 802.3 Ethernet MACs (MII and RMII) Half/Full Duplex with Automatic Flow Control Four 52Mbps Synchronous TDM Serial Ports with independent transmit and receive timing. HDLC/LAPS Encapsulation with Programmable FCS and Interframe Fill Committed Information Rate Controllers Provide Fractional Allocations in 512kbps Increments Programmable BERT for Serial (TDM) Interfaces External 16MB, 100MHz SDRAM Buffering Parallel Microprocessor Interface SPI Interface and Hardware Mode for Operation Without a Host Processor 1.8V Operation with 3.3V Tolerant I/O IEEE 1149.1 JTAG Support

APPLICATIONS
Transparent LAN Service LAN Extension Ethernet Delivery Over T1/E1/J1, T3/E3, OC-1/EC-1, G.SHDSL, or HDSL2/4
FUNCTIONAL DIAGRAM
DS33Z44
TRANSCEIVERS/ SERIAL DRIVERS
Features Continued on Page 10.
4 SERIAL PORTS
ORDERING INFORMATION
PART DS33Z44 TEMP RANGE -40C to +85C PIN-PACKAGE 256 CSBGA
BERT
CONFIG. LOADER
HDLC/X.86 MAPPER
PROM OR mC SDRAM
Go to www.maxim-ic.com/telecom for a complete list of Telecommunications data sheets, evaluation kits, application notes, and software downloads.
4 10/100 MACs
4 MII/RMII
4 10/100 ETHERNET PHYs
Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata.
1 of 181
REV: 120304
DS33Z44 Quad Ethernet Mapper
DOCUMENT REVISION HISTORY
REVISION 120304 DESCRIPTION New Product Release
2 of 181
DS33Z44 Quad Ethernet Mapper
TABLE OF CONTENTS
1 2 DESCRIPTION....................................................................................................................9 FEATURE HIGHLIGHTS...................................................................................................10
2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.12 GENERAL ................................................................................................................................. 10 SERIAL INTERFACES ................................................................................................................. 10 HDLC...................................................................................................................................... 10 COMMITTED INFORMATION RATE (CIR) CONTROLLERS ............................................................... 10 X.86 SUPPORT......................................................................................................................... 10 SDRAM INTERFACE ................................................................................................................. 11 MAC INTERFACES .................................................................................................................... 11 MICROPROCESSOR INTERFACE ................................................................................................. 11 SERIAL SPI INTERFACE--MASTER MODE ONLY ......................................................................... 11 DEFAULT CONFIGURATIONS ...................................................................................................... 11 TEST AND DIAGNOSTICS ........................................................................................................... 11 SPECIFICATIONS COMPLIANCE................................................................................................... 12
3 4 5 6 7 8
APPLICATIONS ................................................................................................................13 ACRONYMS AND GLOSSARY ........................................................................................16 MAJOR OPERATING MODES .........................................................................................17 BLOCK DIAGRAMS .........................................................................................................18 PIN DESCRIPTIONS.........................................................................................................19
7.1 8.1 PIN FUNCTIONAL DESCRIPTION ................................................................................................. 19 PROCESSOR INTERFACE.................................................................................................... 30
Read-Write/Data Strobe Modes ..........................................................................................................31 Clear On Read ....................................................................................................................................31 Interrupt and Pin Modes......................................................................................................................31
FUNCTIONAL DESCRIPTION..........................................................................................30
8.1.1 8.1.2 8.1.3
8.2 8.3 8.4 8.5 8.6 8.7 8.8 8.9 8.10 8.11 8.12
SPI SERIAL EEPROM INTERFACE....................................................................................... 31 CLOCK STRUCTURE ............................................................................................................ 32
Serial Interface Clock Modes ..............................................................................................................34 Ethernet Interface Clock Modes..........................................................................................................34
8.3.1 8.3.2
RESETS AND LOW-POWER MODES................................................................................... 35 INITIALIZATION AND CONFIGURATION .............................................................................. 36 GLOBAL RESOURCES.......................................................................................................... 36 PER-PORT RESOURCES...................................................................................................... 36 DEVICE INTERRUPTS........................................................................................................... 37 SERIAL INTERFACES ........................................................................................................... 39 CONNECTIONS AND QUEUES............................................................................................. 39 ARBITER ................................................................................................................................ 42 FLOW CONTROL................................................................................................................... 42
8.12.1 Full Duplex Flow control......................................................................................................................43 8.12.2 Half Duplex Flow control .....................................................................................................................44 8.12.3 Host-Managed Flow control ................................................................................................................44
8.13 ETHERNET INTERFACES..................................................................................................... 45
8.13.1 DTE and DCE Mode ...........................................................................................................................47
8.14 ETHERNET MAC ................................................................................................................... 48
8.14.1 MII Mode Options ................................................................................................................................50 8.14.2 RMII Mode...........................................................................................................................................50 8.14.3 PHY MII Management Block and MDIO Interface...............................................................................51 3 of 181
DS33Z44 Quad Ethernet Mapper
8.15 BERT...................................................................................................................................... 53
8.15.1 8.15.2 8.15.3 8.15.4 Receive Data Interface........................................................................................................................53 Repetitive Pattern Synchronization .....................................................................................................54 Pattern Monitoring...............................................................................................................................55 Pattern Generation..............................................................................................................................55
8.16 8.17 8.18 8.19 8.20 8.21
SERIAL INTERFACES ........................................................................................................... 56 TRANSMIT PACKET PROCESSOR....................................................................................... 56 RECEIVE PACKET PROCESSOR ......................................................................................... 57 X.86 ENCODING AND DECODING ....................................................................................... 59 COMMITTED INFORMATION RATE CONTROLLER............................................................. 62 HARDWARE MODE ............................................................................................................... 64 REGISTER BIT MAPS ................................................................................................................. 69
Global Register Bit Map ......................................................................................................................69 Arbiter Register Bit Map ......................................................................................................................70 BERT Register Bit Map .......................................................................................................................70 Serial Interface Register Bit Map ........................................................................................................71 Ethernet Interface Register Bit Map ....................................................................................................73 MAC Register Bit Map.........................................................................................................................74
9
DEVICE REGISTERS .......................................................................................................68
9.1
9.1.1 9.1.2 9.1.3 9.1.4 9.1.5 9.1.6
9.2 9.3 9.4 9.5
GLOBAL REGISTER DEFINITIONS................................................................................................ 76 ARBITER REGISTERS ................................................................................................................ 90
Arbiter Register Bit Descriptions .........................................................................................................90
9.3.1
BERT REGISTERS.................................................................................................................... 93 SERIAL INTERFACE REGISTERS ............................................................................................... 100
Serial Interface Transmit and Common Registers ............................................................................100 Serial Interface Transmit Register Bit Descriptions ..........................................................................100 Transmit HDLC Processor Registers................................................................................................101 X.86 Registers...................................................................................................................................107 Receive Serial Interface ....................................................................................................................109 Ethernet Interface Register Bit Descriptions .....................................................................................122 MAC Registers ..................................................................................................................................134
9.5.1 9.5.2 9.5.3 9.5.4 9.5.5
9.6
ETHERNET INTERFACE REGISTERS .......................................................................................... 122
9.6.1 9.6.2
10 FUNCTIONAL TIMING....................................................................................................151
10.1 FUNCTIONAL SERIAL I/O TIMING .............................................................................................. 151 10.2 MII AND RMII INTERFACES...................................................................................................... 152 10.3 SPI INTERFACE MODE AND EEPROM PROGRAM SEQUENCE.................................................... 154
11 OPERATING PARAMETERS .........................................................................................157
11.1 11.2 11.3 11.4 11.5 11.6 11.7 11.8 11.9 MII INTERFACE....................................................................................................................... 160 RMII INTERFACE .................................................................................................................... 162 MDIO INTERFACE................................................................................................................... 164 TRANSMIT WAN INTERFACE ................................................................................................... 165 RECEIVE WAN INTERFACE ..................................................................................................... 166 SDRAM TIMING ..................................................................................................................... 167 MICROPROCESSOR BUS AC CHARACTERISTICS ....................................................................... 169 EEPROM INTERFACE TIMING ................................................................................................. 172 JTAG INTERFACE TIMING ....................................................................................................... 173
12 JTAG INFORMATION.....................................................................................................174
12.1 JTAG/TAP CONTROLLER STATE MACHINE DESCRIPTION ......................................................... 175 12.2 INSTRUCTION REGISTER ......................................................................................................... 177
12.2.1 12.2.2 12.2.3 12.2.4 SAMPLE:PRELOAD .........................................................................................................................178 BYPASS............................................................................................................................................178 EXTEST ............................................................................................................................................178 CLAMP..............................................................................................................................................178 4 of 181
DS33Z44 Quad Ethernet Mapper 12.2.5 HIGHZ ...............................................................................................................................................178 12.2.6 IDCODE ............................................................................................................................................178
12.3 12.4 12.5 12.6 12.7 12.8
JTAG ID CODES .................................................................................................................... 179 TEST REGISTERS.................................................................................................................... 179 BOUNDARY SCAN REGISTER ................................................................................................... 179 BYPASS REGISTER ................................................................................................................. 179 IDENTIFICATION REGISTER ...................................................................................................... 179 JTAG FUNCTIONAL TIMING ..................................................................................................... 180
13 PACKAGE INFORMATION.............................................................................................181
13.1 17MM X 17MM 256-CSBGA .................................................................................................... 181
5 of 181
DS33Z44 Quad Ethernet Mapper
LIST OF FIGURES
Figure 3-1. Ethernet-to-WAN Extension (No Framing).............................................................................................13 Figure 3-2. Ethernet-to-WAN Extension (T1/E1 Framing and LIU) ..........................................................................14 Figure 3-3. Ethernet-to-WAN Extension with T3/E3 Framing...................................................................................14 Figure 3-4. Ethernet Over DSL .................................................................................................................................15 Figure 3-5. Copper-to-Fiber Connection...................................................................................................................15 Figure 6-1. Detailed Block Diagram..........................................................................................................................18 Figure 7-1. 256-Ball CSBGA Pinout..........................................................................................................................29 Figure 8-1. Clocking for the DS33Z44 ......................................................................................................................33 Figure 8-2. Device Interrupt Information Flow Diagram............................................................................................38 Figure 8-3. Transmit Connection Diagram ...............................................................................................................40 Figure 8-4. Receive Connection Diagram.................................................................................................................41 Figure 8-5. Flow Control Using Pause Control Frame..............................................................................................44 Figure 8-6. IEEE 802.3 Ethernet Frame ...................................................................................................................45 Figure 8-7. Configured as DTE Connected to an Ethernet PHY in MII Mode...........................................................47 Figure 8-8. DS33Z44 Configured as a DCE in MII Mode .........................................................................................48 Figure 8-9. RMII Interface.........................................................................................................................................51 Figure 8-10. MII Management Frame .......................................................................................................................52 Figure 8-11. PRBS Synchronization State Diagram .................................................................................................54 Figure 8-12. Repetitive Pattern Synchronization State Diagram ..............................................................................55 Figure 8-13. LAPS Encoding of MAC Frames Concept............................................................................................59 Figure 8-14. X.86 Encapsulation of the MAC Field...................................................................................................60 Figure 8-15. CIR in the WAN Transmit Path ............................................................................................................63 Figure 10-1. Tx Serial Interface Functional Timing.................................................................................................151 Figure 10-2. Rx Serial Interface Functional Timing ................................................................................................151 Figure 10-3. Transmit Byte Sync Functional timing ................................................................................................152 Figure 10-4. Receive Byte Sync Functional Timing ................................................................................................152 Figure 10-5. MII Transmit Functional Timing..........................................................................................................153 Figure 10-6. MII Transmit Half Duplex with a Collision Functional Timing .............................................................153 Figure 10-7. MII Receive Functional Timing ...........................................................................................................153 Figure 10-8. RMII Transmit Interface Functional Timing ........................................................................................153 Figure 10-9. RMII Receive Interface Functional Timing .........................................................................................154 Figure 10-10. SPI Master Functional Timing ..........................................................................................................154 Figure 11-1. Transmit MII Interface ........................................................................................................................160 Figure 11-2. Receive MII Interface Timing..............................................................................................................161 Figure 11-3. Transmit RMII Interface......................................................................................................................162 Figure 11-4. Receive MII Interface Timing..............................................................................................................163 Figure 11-5. MDIO Timing ......................................................................................................................................164 Figure 11-6. Transmit WAN Timing........................................................................................................................165 Figure 11-7. Receive WAN Timing .........................................................................................................................166 Figure 11-8. SDRAM Interface Timing....................................................................................................................168 Figure 11-9. Intel Bus Read Timing (HWMODE = 0, MODEC = 00) ......................................................................170 Figure 11-10. Intel Bus Write Timing (HWMODE = 0, MODEC = 00) ....................................................................170 6 of 181
DS33Z44 Quad Ethernet Mapper Figure 11-11. Motorola Bus Read Timing (HWMODE = 0, MODEC = 01).............................................................171 Figure 11-12. Motorola Bus Write Timing (HWMODE = 0, MODEC = 01).............................................................171 Figure 11-13. EEPROM Interface Timing ...............................................................................................................172 Figure 11-14. JTAG Interface Timing Diagram.......................................................................................................173 Figure 12-1. JTAG Functional Block Diagram ........................................................................................................174 Figure 12-2. Tap Controller State Diagram.............................................................................................................177 Figure 12-3. JTAG Functional Timing.....................................................................................................................180
7 of 181
DS33Z44 Quad Ethernet Mapper
LIST OF TABLES
Table 2-1. T1-Related Telecommunications Specifications .....................................................................................12 Table 7-1. Detailed Pin Descriptions ........................................................................................................................19 Table 8-1. Clocking Options for the Ethernet Interface ............................................................................................32 Table 8-2. LAN Interface Clock Selection.................................................................................................................34 Table 8-3. Reset Functions.......................................................................................................................................35 Table 8-4. Registers Related to Connections and Queues ......................................................................................41 Table 8-5. Options for Flow Control..........................................................................................................................42 Table 8-6. Registers Related to the Ethernet Port....................................................................................................46 Table 8-7. MAC Control Registers............................................................................................................................49 Table 8-8. MAC Status Registers .............................................................................................................................49 Table 8-9. Serial Port Functions ...............................................................................................................................56 Table 8-10. Hardware Modes and Applications ........................................................................................................64 Table 8-11. Specific Functional Default Values for Hardware Mode ........................................................................65 Table 8-12. Hardware Mode Pins .............................................................................................................................67 Table 9-1. Register Address Map .............................................................................................................................68 Table 9-2. Global Register Bit Map...........................................................................................................................69 Table 9-3. Arbiter Register Bit Map ..........................................................................................................................70 Table 9-4. BERT Register Bit Map ...........................................................................................................................70 Table 9-5. Serial Interface Register Bit Map.............................................................................................................71 Table 9-6. Ethernet Interface Register Bit Map ........................................................................................................73 Table 9-7. MAC Indirect Register Bit Map ................................................................................................................74 Table 10-1. EEPROM Program Memory Map ........................................................................................................155 Table 10-2. MAC Registers That Can Be Programmed from the EEPROM ..........................................................156 Table 11-1. Recommended DC Operating Conditions ...........................................................................................157 Table 11-2. DC Electrical Characteristics ...............................................................................................................157 Table 11-3. Typical Output Pin Drive Currents .......................................................................................................158 Table 11-4. SDRAM Interface Timing.....................................................................................................................167 Table 12-1. Instruction Codes for IEEE 1149.1 Architecture ..................................................................................178 Table 12-2. ID Code Structure................................................................................................................................179
8 of 181
DS33Z44 Quad Ethernet Mapper
1 DESCRIPTION
The DS33Z44 provides interconnection and mapping functionality between Ethernet Packet Systems and WAN Time-Division Multiplexed (TDM) systems such as T1/E1/J1, HDSL, and T3/E3. The device is composed of four 10/100 Ethernet MACs, a packet arbiter, four committed information rate controllers (CIRs), HDLC/X.86 (LAPS) mappers, an SDRAM interface, control ports, and a bit error-rate tester (BERT). The packet interface consists of four Ethernet interfaces using several physical layer protocols. The Ethernet interfaces can be configured for 10 Mbit/s or 100 Mbit/s service. The DS33Z44 encapsulates Ethernet traffic with HDLC or X.86 (LAPS) to be transmitted over the WAN interface. The WAN interfaces also receive encapsulated Ethernet packets and transmit the extracted packets over the Ethernet ports. The WAN physical interfaces support serial data streams up to 52 Mbit/s. The WAN interfaces can be seamlessly connected to the Dallas Semiconductor/Maxim T1/E1/J1 framers, line interface units (LIUs), and single-chip transceivers (SCTs). The WAN interfaces can also be seamlessly connected to the Dallas Semiconductor/Maxim T3/E3/STS-1 framers, LIUs, and SCTs to provide T3, E3, and STS1 connectivity. Refer to Application Note 3411: DS33Z11--Ethernet LAN to Unframed T1/E1 WAN Bridge for an example of a complete LAN-to-WAN solution. The DS33Z44 is controlled through an 8-bit microcontroller port. A serial EEPROM (SPI) interface and hardware mode are also included for applications without a host processor. The DS33Z44 has a 100MHz SDRAM controller and interfaces to a 32-bit wide 128-Mbit SDRAM. The SDRAM is used to buffer the data from the Ethernet and WAN ports for transport. The external SDRAM can accommodate up to 8192 frames with a maximum frame size of 2016 bytes. Operation without an external host simplifies and reduces the cost of typical applications such as connectivity to T1/T3 and E1/E3 front ends. The DS33Z44 operates with a 1.8V core supply and 3.3V I/O supply.
9 of 181
DS33Z44 Quad Ethernet Mapper
2
2.1
FEATURE HIGHLIGHTS
General
* * * * * 256-pin CSBGA package 1.8V supply with 3.3V tolerant inputs and outputs IEEE 1149.1 JTAG boundary scan Software access to device ID and silicon revision Development support includes evaluation kit, driver source code, and reference designs
2.2
Serial Interfaces
* * * Support line speeds up to 52 Mbit/s Support data enable and gapped clocking Support byte synchronization input and output for X.86 applications
2.3
HDLC
* * * * * * * * * * Four HDLC controller engines Compatible with polled or interrupt driven environments Programmable FCS insertion and extraction Programmable FCS type Supports FCS error insertion Programmable packet size limits (minimum 64 bytes and maximum 2016 bytes) Supports bit stuffing/destuffing 43 Selectable packet scrambling/descrambling (X +1) Separate FCS errored packet and aborted packet counts Programmable interframe fill for transmit HDLC
2.4
Committed Information Rate (CIR) Controllers
* * * Four CIR controllers limit transmission of data from the Ethernet Interfaces to the Serial Interfaces CIR granularity at 512 kbit/s CIR Averaging for smoothing traffic peaks
2.5
X.86 Support
* * * * * * * * * * * Programmable X.86 address/control fields for transmit and receive Programmable 2-byte protocol (SAPI) field for transmit and receive 32 bit FCS Transmit Transparency processing-7E is replaced by 7D, 5E Transmit Transparency processing-7D replaced by 7D, 5D Receive rate adaptation (7D, DD) is deleted. Receive Transparency processing-7D, 5E is replaced by 7D Receive Transparency processing-7D, 5D is replaced by 7D Receive Abort Sequence the LAPS packet is dropped if 7D7E is detect 43 Self-synchronizing X +1 payload scrambling. Frame indication due to bad address/control/SAPI, FCS error, abort sequence or frame size longer than preset max
10 of 181
DS33Z44 Quad Ethernet Mapper
2.6
SDRAM Interface
* * * * * * Interface for 128-Mbit, 32-bit-wide SDRAM SDRAM Interface speed up to 100 MHz Auto refresh timing Automatic precharge Master clock provided to the SDRAM No external components required for SDRAM connectivity
2.7
MAC Interfaces
* * * * * * * * * * * * Four MAC ports with standard MII (less TX_ER) or RMII 10Mbps and 100 Mbps data rates Configurable DTE or DCE modes Facilitates auto-negotiation by host microprocessor Programmable half and full-duplex modes Flow control for both half-duplex (back-pressure) and full-duplex (PAUSE) modes Programmable maximum MAC frame size up to 2016 bytes Minimum MAC frame size: 64 bytes Discards frames greater than programmed maximum MAC frame size and runt, non-octet bounded, or bad-FCS frames upon reception Configurable for promiscuous broadcast-discard mode. Programmable threshold for SDRAM queues to initiate flow control and status indication MAC loopback support for transmit data looped to receive data at the MII/RMII interface
2.8
Microprocessor Interface
* * * * 8-bit data bus Non-multiplexed Intel and Motorola Timing Modes Internal software reset and External Hardware reset input pin Global interrupt output pin
2.9
Serial SPI Interface--Master Mode Only
* * * Provides chip select and clock for external EEPROM Operation up to 8.33 MHz 4-signal interface
2.10 Default Configurations
* * * Three default hardware configurations for operation without an external microprocessor Hardware modes set for easy connection to T1/E1 and T3/E3 WAN Systems Hardware pins provide some flexibility for configuration
2.11 Test and Diagnostics
* * * * IEEE 1149.1 support Programmable on-chip BERT Patterns include pseudorandom QRSS, Daly, and user-defined repetitive patterns Loopbacks (remote, local, analog, and per-channel loopback)
11 of 181
DS33Z44 Quad Ethernet Mapper
2.12 Specifications Compliance
The DS33Z44 meets relevant telecommunications specifications. The following table provides the specifications and relevant sections that are applicable to the DS33Z44.
Table 2-1. T1-Related Telecommunications Specifications
IEEE 802.3-2002--CSMA/CD access method and physical layer specifications. RFC1662--PPP in HDLC-like Framing RFC2615--PPP over SONET/SDH X.86--Ethernet over LAPS RMII--Industry Implementation Agreement for "Reduced MII Interface," Sept 1997
12 of 181
DS33Z44 Quad Ethernet Mapper
3 APPLICATIONS

Transparent LAN Service LAN Extension Ethernet Delivery over T1/E1/J1, T3/E3, OC-1/EC-1, G.SHDSL, or HDSL2/4
Also refer to Application Note 3411: DS33Z11--Ethernet LAN to Unframed T1/E1 WAN Bridge for an example of a complete LAN-to-WAN design.
Figure 3-1. Ethernet-to-WAN Extension (No Framing)
4 HDLC Serial Streams T1/T3 LIU DS21Q48 or DS3154 Quad DS33Z44
4 Ports RMII or MII 10/100 Base T Ethernet
Clock Sources SDRAM
13 of 181
DS33Z44 Quad Ethernet Mapper
Figure 3-2. Ethernet-to-WAN Extension (T1/E1 Framing and LIU)
T1 Framer/LIU DS21Q55 or DS26524 Quad
4 HDLC Serial Streams DS33Z44
4 Ports RMII or MII 10/100 Base T Ethernet
Clock Sources SDRAM
Figure 3-3. Ethernet-to-WAN Extension with T3/E3 Framing
T3 Framer/LIU DS3154 or DS3144 Quad
4 HDLC Serial Streams DS33Z44
4 Ports RMII or MII 10/100 Base T Ethernet
Clock Sources SDRAM
14 of 181
DS33Z44 Quad Ethernet Mapper
Figure 3-4. Ethernet Over DSL
4 HDLC Serial Streams DSL Processor/AFE DS33Z44
4 Ports RMII or MII 10/100 Base T Ethernet
Clock Sources SDRAM
Figure 3-5. Copper-to-Fiber Connection
4 HDLC Serial Streams Optical I/F & connectors Fiber Phys DS33Z44
RMII/MII Ethernet
Clock Sources SDRAM
15 of 181
DS33Z44 Quad Ethernet Mapper
4 ACRONYMS AND GLOSSARY
* * * * * * * * * BERT: Bit Error-Rate Tester DCE: Data Communication Interface DTE: Data Terminating Interface FCS: Frame Check Sequence HDLC: High-Level Data Link Control MAC: Media Access Control MII: Media Independent Interface RMII: Reduced Media Independent Interface WAN: Wide Area Network
Note 1: Previous versions of this document used the term "Subscriber" to refer to the Ethernet Interface function. The register names have been allowed to remain with an "SU." prefix to avoid register renaming. Note 2: Previous versions of this document used the term "Line" to refer to the Serial Interface. The register names have been allowed to remain with an "LI." prefix to avoid register renaming. Note 3: The terms "Transmit Queue" and "Receive Queue" are with respect to the Ethernet Interface. The Receive Queue is the queue for the data that arrives on the MII/RMII interface, is processed by the MAC and stored in the SDRAM. Transmit queue is for data that arrives from the Serial port, is processed by the HDLC and stored in the SDRAM to be sent to the MAC transmitter.
16 of 181
DS33Z44 Quad Ethernet Mapper
5 MAJOR OPERATING MODES
The DS33Z44 has three major modes of operation: microprocessor controlled, EEPROM initialized, and Hardware mode. Microprocessor control is possible through the 8-bit parallel control port. More information on microprocessor control is available in Section 8.1. EEPROM initialization is enabled by the built-in SPI Master that reads a serial EEPROM connected to the SPI port after device reset and initializes the device. More information on EEPROM operation is available in Section 8.2. Hardware mode allows configuration of the device without a host microprocessor or EEPROM. More information on Hardware mode is available in Section 8.21.
17 of 181
DS33Z44 Quad Ethernet Mapper
6 BLOCK DIAGRAMS
Figure 6-1. Detailed Block Diagram
Eprom
SPI_SCLK (max 8.33MHz) 50 or 25 Mhz Oscillator
DS33Z44
HDLC + Serial Interface X.86 HDLC + Serial Interface Cross Connect X.86 HDLC + Serial Interface X.86 HDLC + Serial Interface X.86 Arbiter CIR CIR
Buffer Div by 1,2,4,10 Output clocks: 50MHz, 25 MHz, 2.5 MHz
REF_CLKI
TCLKI1 RCLKI1 TCLKI2 RCLKI2 TCLKI3 RCLKI3
Line 1
TX_CLK1 MAC RMII MII CIR TX_CLK2 MAC RMII MII RX_CLK2 RX_CLK1 MDC
Line 2
Line 3
TCLKI4 RCLKI4
TX_CLK3 MAC RMII MII RX_CLK3
Line 4
CIR
MAC RMII MII
TX_CLK4 RX_CLK4 100 Mhz Oscillator
SDRAM Interface
Buffer Dev Div by 2,4,12 Output Clocks 25MHz, 50MHz SDCLKO REF_CLKO 50 or 25 Mhz
SYSCLKI
SDRAM
18 of 181
DS33Z44 Quad Ethernet Mapper
7 PIN DESCRIPTIONS
7.1 Pin Functional Description
Note that all digital pins are input/output pins in JTAG mode. This feature increases the effectiveness of board-level ATPG patterns. I = input; O = output; Ipu = input, with pullup; Oz = output, with tri-state; IO = bidirectional pin; IOz = bidirectional pin, with tri-state
Table 7-1. Detailed Pin Descriptions
NAME PIN TYPE SERIAL INTERFACE IO PINS TCLKI1 TCLKI2 TCLKI3 TCLKI4 TSER1 TSER2 TSER3 TSER4 TDEN1/TBSYNC1 F1 J1 I M1 R1 F2 J2 O M2 R2 F5 Transmit Data Enable Port n (Input): The transmit data enable is programmable to selectively block/enable the transmit data. The TDENn signal must occur one clock edge prior to the affected data bit. The active polarity of TDENn is programmable in register LI.TSLCR. It is recommended for both T1/E1 and T3/E3 applications that use gapped clocks. The TDENn signal is provided for interfacing to framers that do not have a gapped clock facility. Transmit Byte Sync Port n (Output): This output can be used by an external Serial to Parallel to convert TSERn stream to byte wide data. This output indicates the last bit of the byte data sent serially on TSERn. This signal is only active in the X.86 Mode. Note that in Hardware mode and non-X.86 operation this pin must be tied high. Transmit Serial Data Port n Output: Output on the rising edge of TCLKIn. Selective clock periods can be skipped for output of TSERn dependent on the TDENn settings or gapped clock input (TCLKIn). The maximum data rate is 52 Mbit/s. Serial Interface Transmit Clock Port n Input: The clock reference for TSER1-TSER4, which is output on the rising edge of the clock. TCLKIn supports gapped clocking, up to a maximum frequency of 52 MHz. FUNCTION
TDEN2/TBSYNC2
K2 IO
TDEN3/TBSYNC3
P3
TDEN4/TBSYNC4 RCLKI1 RCLKI2 RCLKI3 RCLKI4 RSER1 RSER2 RSER3 RSER4
R3 G2 L2 N2 T3 H1 K1 P1 T2 I I
Serial Interface Receive Clock Input for Port n: Reference clock for receive serial data on RSERn. Gapped clocking is supported, up to the maximum RCLKIn frequency of 52 MHz.
Receive Serial Data Input for Port n: Receive Serial data arrives on the rising edge of the clock.
19 of 181
DS33Z44 Quad Ethernet Mapper NAME RDEN1/RBSYNC1 PIN H2 TYPE FUNCTION Receive Data Enable Port n: The receive data enable is programmable to block the receive data. The RDENn must be coincident with the RSERn data bit to be blocked or enabled. The active polarity of RDENn is programmable in register LI.RSLCR. It is recommended for both T1/E1 and T3/E3 applications that use gapped clocks. The RDENn signal is provided for interfacing to framers that do not have a gapped clock facility. I RDEN3/RBSYNC3 N1 Receive Byte Synchronization Input Port n: Provides byte synchronization input to X.86 decoder. This signal will go high at the last bit of the byte as it arrives. This signal can occur at maximum rate every 8 bits. Note that a long as the DS33Z44 receives one RBSYNCn indicator, the X.86 receiver will determine the byte boundary. Hence the DS33Z44 does not require a continuous 8-bit sync indicator. A new sync pulse is required if the byte boundary changes. Note that in Hardware mode and non-X.86 operation of operation this pin must be tied high. MII/RMII PORT Reference Clock (RMII and MII): All RMII signals are synchronous to this clock. The duty cycle can be 35% to 65%. This clock can be up to 50 MHz and should have 100 ppm accuracy. The DS33Z44 can generate the 2.5 MHz and 25 MHz clocks as required for the Ethernet PHY interface. For an MII interface in DCE mode, this clock input should be 25 MHz. The RMIIMIIS pin is used to select RMII or MII operation. When the MII interface is used in DTE mode, this clock is not required and should be tied low. In RMII Mode, this clock is used as reference for both transmit and receive RMII interface and is required. Reference Clock Output (RMII and MII): A derived clock output up to 50 MHz, generated by internal division of the SYSCLKI signal. Frequency accuracy of the REF_CLKO signal will be proportional to the accuracy of the user-supplied SYSCLKI signal. This output can be used for the RMII/MII interface clock by external connection to REF_CLK. This capability eliminates the need for an additional 50 MHz (RMII) or 25 MHz (MII) PHY reference oscillator. See Section 8.3.2 for more information. Transmit Clock Port n (MII): Timing reference for TX_ENn and TXDn[3:0]. The TX_CLKn frequency is 25 MHz for 100 Mbit/s operation and 2.5 MHz for 10 Mbit/s operation. In DTE mode, this is a clock input provided by the PHY. In DCE mode, this is an output derived from REF_CLK providing 2.5 MHz (10 Mbit/s operation) or 25 MHz (100 Mbit/s operation). Transmit Enable Port n (MII): This pin is asserted high when data TXDn[3:0] is being provided by the DS33Z44. The signal is deasserted prior to the first nibble of the next frame. This signal is synchronous with the rising edge TX_CLKn. It is asserted with the first bit of the preamble. Transmit Enable Port n (RMII): When this signal is asserted, the data on TXDn[1:0] is valid. This signal is synchronous to the REF_CLK. 20 of 181
RDEN2/RBSYNC2
L1
RDEN4/RBSYNC4
T1
REF_CLK
C15
I
REF_CLKO
B15
O
TX_CLK1 TX_CLK2 TX_CLK3 TX_CLK4 TX_EN1 TX_EN2 TX_EN3 TX_EN4
A9 M16 G16 A16 E10 L14 O E15 G13 IO
DS33Z44 Quad Ethernet Mapper NAME TXD1[0] TXD1[1] TXD1[2] TXD1[3] TXD2[0] TXD2[1] TXD2[2] TXD2[3] TXD3[0] TXD3[1] TXD3[2] TXD3[3] TXD4[0] TXD4[1] TXD4[2] TXD4[3] RX_CLK1 RX_CLK2 RX_CLK3 RX_CLK4 RXD1[0] RXD1[1] RXD1[2] RXD1[3] RXD2[0] RXD2[1] RXD2[2] RXD2[3] RXD3[0] RXD3[1] RXD3[2] RXD3[3] RXD4[0] RXD4[1] RXD4[2] RXD4[3] RX_DV1 RX_DV2 RX_DV3 RX_DV4 PIN B9 C9 D9 E9 R15 R16 L15 N14 F15 G14 H13 H14 B16 C16 D16 E16 A11 L16 H16 A13 B11 C11 D11 A11 K13 K14 H15 K16 G15 J14 J13 J12 B13 C13 B14 C14 D10 K15 K11 D15 21 of 181 I Receive Data Valid Port n (MII): This active-high signal indicates valid data from the PHY. The data RXDn[3:0] is ignored if RX_DVn is not asserted high. I Receive Data Port n 0 through 3(MII): Four bits of received data, sampled synchronously with the rising edge of RX_CLKn. For every clock cycle, the PHY transfers 4 bits to the DS33Z44. RXDn[0] is the least significant bit of the data. Data is not considered valid when RX_DVn is low. Receive Data Port n 0 through 1(RMII): Two bits of received data, sampled synchronously with REF_CLK with 100 Mbit/s Mode. Accepted when CRS_DVn is asserted. When configured for 10 Mbit/s Mode, the data is sampled once every 10 clock periods. IO TYPE FUNCTION
O
Transmit Data Port n 0 through 3(MII): TXDn[3:0] is presented synchronously with the rising edge of TX_CLKn. TXDn[0] is the least significant bit of the data. When TX_ENn is low the data on TXDn[3:0] should be ignored. Transmit Data Port n 0 through 1(RMII): Two bits of data TXDn[1:0] presented synchronously with the rising edge of REF_CLK.
Receive Clock n (MII): Timing reference for RX_DVn, RX_ERRn and RXDn[3:0], which are clocked on the rising edge. RX_CLKn frequency is 25 MHz for 100 Mbit/s operation and 2.5 MHz for 10 Mbit/s operation. In DTE mode, this is a clock input provided by the PHY. In DCE mode, this is an output derived from REF_CLK providing 2.5 MHz (10 Mbit/s operation) or 25 MHz (100 Mbit/s operation).
DS33Z44 Quad Ethernet Mapper NAME RX_CRS1/ CRS_DV1 RX_CRS2/ CRS_DV2 RX_CRS3/ CRS_DV3 RX_CRS4/ CRS_DV4 RX_ERR1 RX_ERR2 RX_ERR3 RX_ERR4 COLDET1 COLDET2 COLDET3 COLDET4 PIN D12 N16 I M15 F14 E12 T16 I G11 D14 D13 P16 H11 F16 Management Data Clock (MII): Clocks management data between the PHY and DS33Z44. The clock is derived from the REF_CLK, with a maximum frequency is 1.67 MHz. The user must leave this pin unconnected in the DCE Mode. MII Management Data IO (MII): Data path for control information between the PHY and DS33Z44. When not used, pull to logic high externally through a 10K resistor. The MDC and MDIO pins are used to write or read up to 32 Control and Status Registers in 32 PHY Controllers. This port can also be used to initiate Auto-Negotiation for the PHY. The user must leave this pin unconnected in the DCE Mode. MICRO PORT/SPI Address Bit 0: Address bit 0 of the microprocessor interface. Least Significant Bit A0/BREO A1 I BREO (Hardware Mode): Used in Hardware Mode to reverse the ordering of HDLC transmit and receive functions. Active high input. When 0, the first bit received is the MSB. When 1, bit the first bit received is the LSB. The software registers used for control of this function are LI.RPPCL and LI.TPPCL. I Collision Detect Port n (MII): Asserted by the MAC PHY to indicate that a collision is occurring. In DCE Mode this signal should be connected to ground. This signal is only valid in half duplex mode, and is ignored in full duplex mode. Receive Error Port n (MII): Asserted by the MAC PHY for one or more RX_CLKn periods indicating that an error has occurred. Active High indicates Receive code group is invalid. If CRS_DVn is low, RX_ERRn has no effect. This is synchronous with RX_CLKn. In DCE mode, this signal must be grounded. Receive Error Port n (RMII): Signal is synchronous to REF_CLK. Carrier Sense/Receive Data Valid Port n (RMII): This signal is asserted (high) when data is valid from the PHY. For each clock pulse 2 bits arrive from the PHY. In DCE mode, this signal must be grounded. TYPE FUNCTION Receive Carrier Sense Port n (MII): Should be asserted (high) when data from the PHY (RXDn[3:0) is valid. For each clock pulse 4 bits arrive from the PHY. Bit 0 is the least significant bit. In DCE mode, connect to VDD.
MDC
F11
O
MDIO
F10
IO
22 of 181
DS33Z44 Quad Ethernet Mapper NAME PIN TYPE FUNCTION Address Bit 1: Address bit 1 of the microprocessor interface. A1/SCD B1 SCD (Hardware Mode): Used in Hardware Mode to disable X +1 bit scrambling for both the transmit and receive paths. Applies to HDLC 43 and X.86 transport. When 1, X +1 scrambling is disabled. When 0, 43 X +1 scrambling is enabled. The software registers used for control of this function are LI.RPPCL and LI.TPPCL. Address Bit 2: Address bit 2 of the microprocessor interface. A2/X86ED A2 X86ED (Hardware Mode): When in Hardware Mode, setting this pin high enables X.86 encapsulation for both the transmit and receive data. When 0, HDLC encapsulation is used. The register used to control this function in Software Mode is LI.TX86EDE. Address Bit 3: Address bit 3 of the microprocessor interface. Address Bit 4: Address bit 4 of the microprocessor interface. Address Bit 5: Address bit 5 of the microprocessor interface. Address Bit 6: Address bit 6 of the microprocessor interface. Address Bit 7: Address bit 7 of the microprocessor interface. Address Bit 8: Address bit 8 of the microprocessor interface. Address Bit 9: Address bit 9 of the microprocessor interface. Most Significant Bit. Data Bit 0: Bidirectional data bit 0 of the microprocessor interface. Least Significant Bit. Not driven when CS = 1 or RST = 0. D0/MOSI A5 IOZ Master Out Slave In (SPI Mode): Data stream that provides the instruction and address information to the external EEPROM when in SPI Master Mode. MOSI is updated on the rising edge when CKPHA is set high, and on the falling edge when set low. Data Bit 1: Bidirectional data bit 1 of the microprocessor interface. Not driven when CS = 1 or RST = 0. D1/MISO A6 IOZ Master In Slave Out (SPI Mode): Data path from the SPI EEPROM to the DS33Z44. Must be synchronous with SPICK. The Serial EEPROM SPI Interface will provide data to the DS33Z44, MSB first. MISO is sampled on the falling edge when CKPHA is set high, and on the rising edge when set low. Data Bit 2: Bidirectional data bit 2 of the microprocessor interface. Not driven when CS = 1 or RST = 0. SPICK: Provides clocking for SPI transactions. D3 D4 D5 B5 B6 B7 IOZ IOZ IOZ Data Bit 3: Bidirectional data bit 3 of the microprocessor interface. Not driven when CS = 1 or RST = 0. Data Bit 4: Bidirectional data bit 4 of the microprocessor interface. Not driven when CS = 1 or RST = 0. Data Bit 5: Bidirectional data bit 5 of the microprocessor interface. Not driven when CS = 1 or RST = 0.
43
A3 A4 A5 A6 A7 A8 A9
B2 C2 A3 B3 C3 A4 B4
D2/SPICK
A7
IOZ
23 of 181
DS33Z44 Quad Ethernet Mapper NAME D6 D7
SPI_CS
PIN C5 C6 E13
TYPE IOZ IOZ O
FUNCTION Data Bit 6: Bidirectional data bit 6 of the microprocessor interface. Not driven when CS = 1 or RST = 0. Data Bit 7: Bidirectional data bit 7 of the microprocessor interface. Most Significant Bit. Not driven when CS = 1 or RST = 0. Active-Low SPI Chip Select: This pin provides the chip select to the external EEPROM, when the SPI port is in master mode. SPI Clock Phase: MISO is sampled on the falling edge when CKPHA is set high, and on the rising edge when set low. MOSI is updated on the rising edge when CKPHA is set high, and on the falling edge when set low. Active-Low Chip Select: This pin must be taken low for read/write operations. When CS is high, the RD/DS and WR signals are ignored. Active-Low Read Data Strobe (Intel Mode): The DS33Z44 drives the data bus (D0-D7) with the contents of the addressed register while RD and CS are both low. Active-Low Data Strobe (Motorola Mode): Used to latch data through the microprocessor interface. DS must be low during read and write operations. Active-Low Write (Intel Mode): The DS33Z44 captures the contents of the data bus (D0-D7) on the rising edge of WR and writes them to the addressed register location. CS must be held low during write operations. Active-Low Read Write (Motorola Mode): Used to indicate read or write operation. RW must be set high for a register read cycle and low for a register write cycle. Active-Low Interrupt Output: Outputs a logic zero when an unmasked interrupt event is detected. INT is deasserted when all interrupts have been acknowledged and serviced. Active low. Inactive state is programmable in register GL.CR1. Active-Low Reset: An active-low signal on this pin asynchronously resets the internal registers and logic. This pin should remain low until power is stable and then set high for normal operation. Hardware Mode: Connect to VDD to place the device in Hardware Mode. MODEC[1:0] determines the default hardware setting to be used. This pin must be held low for control by a microprocessor or an external EEPROM.
CKPHA
F6
I
CS
D1
I
RD/DS
E1
I
WR/RW
E2
I
INT
D3
OZ
RST
D8
I
HWMODE
D5
I
24 of 181
DS33Z44 Quad Ethernet Mapper NAME PIN TYPE FUNCTION Mode Control Software Mode Options (HWMODE = 0) 00 = Read/Write Strobe Used (Intel Mode) 01 = Data Strobe Used (Motorola Mode) 10 = SPI Master Mode (External EEPROM) 11 = Reserved. Do not use. Hardware Mode Options (HWMODE = 1) 00 = Default Hardware Mode. See Table 8-10. 01 = Reserved. Do not use. 10 = Reserved. Do not use. 11 = Reserved. Do not use. DCE or DTE Selection: The user must set this pin high for DCE Mode selection or low for DTE Mode. This input affects operation in both software and hardware mode. In DCE Mode, the DS33Z44 MAC port can be directly connected to another MAC. In DCE Mode, the Transmit clock (TX_CLKn) and Receive clock (RX_CLKn) are output by the DS33Z44. Note that there is no software bit selection of DCEDTES. Note that DCE Mode is only relevant when the MAC interface is in MII mode. RMII or MII Selection: Set high to configure the MAC for RMII interfacing. Set low for MII interfacing. Applies to all four ports.
MODEC[0], MODEC[1]
D6, D7
I
DCEDTES
A15
I
RMIIMIIS FULLDS1 FULLDS2 FULLDS3 FULLDS4 H10S1 H10S2 H10S3 H10S4 AFCS1 AFCS2 AFCS3 AFCS4
C4 A10 J15
I
I H12 A12 B10 L11 I F12 B12 C10 J16 I J11 C12
Full Duplex Selection Port n (Hardware Mode): When in Hardware Mode, this pin selects full duplex MAC operation when set high. If low, the MAC will operate in half duplex mode. In software mode, this pin has no effect and duplex selection is controlled in the SU.GCR register.
100Mbit/10MBit Port n (Hardware Mode): When in Hardware Mode, this pin selects the packet PHY data rate. Set high for 100 Mbit/s. Set low for the MII/RMII interface to run at 10 Mbit/s. In the software mode this pin has no effect and the rate selection is controlled in the SU.GCR register.
Automatic Flow Control (Hardware Mode): When in Hardware Mode, set high to enable automatic flow control pause and backpressure application. In the software mode this pin has no effect and the rate selection is controlled by the SU.GCR register.
25 of 181
DS33Z44 Quad Ethernet Mapper NAME PIN TYPE SDRAM CONTROLLER SDATA[0] SDATA[1] SDATA[2] SDATA[3] SDATA[4] SDATA[5] SDATA[6] SDATA[7] SDATA[8] SDATA[9] SDATA[10] SDATA[11] SDATA[12] SDATA[13] SDATA[14] SDATA[15] SDATA[16] SDATA[17] SDATA[18] SDATA[19] SDATA[20] SDATA[21] SDATA[22] SDATA[23] SDATA[24] SDATA[25] SDATA[26] SDATA[27] SDATA[28] SDATA[29] SDATA[30] SDATA[31] SDA[0] SDA[1] SDA[2] SDA[3] SDA[4] SDA[5] SDA[6] SDA[7] SDA[8] SDA[9] SDA[10] SDA[11] R4 P5 T4 R5 T5 T6 R6 P7 N6 P6 M6 M3 M5 N4 N5 P4 R12 N12 P12 T13 T12 T14 R13 R14 P14 P13 N15 N13 M13 L12 M12 M11 R10 T10 R11 P11 M9 N9 N10 M8 N8 P9 P10 T9 FUNCTION
IOZ
SDRAM Data Bus, Bits 0 to 31: The 32 pins of the SDRAM data bus are inputs for read operations and outputs for write operations. At all other times, these pins are high impedance. Note: All SDRAM operations are controlled entirely by the DS33Z44. No user programming for SDRAM buffering is required.
O
SDRAM Address Bus 0 to 11: The 12 pins of the SDRAM address bus output the row address first, followed by the column address. The row address is determined by SDA0 to SDA11 at the rising edge of clock. Column address is determined by SDA0-SDA9 and SDA11 at the rising edge of the clock. SDA10 is used as an auto-precharge signal. Note: All SDRAM operations are controlled entirely by the DS33Z44. No user programming for SDRAM buffering is required.
26 of 181
DS33Z44 Quad Ethernet Mapper NAME SBA[0] SBA[1]
SRAS
PIN R8
TYPE I
FUNCTION SDRAM Bank Select: These two bits select 1 of 4 banks for the read/write/precharge operations. Note: All SDRAM operations are controlled entirely by the DS33Z44. No user programming for SDRAM buffering is required. Active-Low SDRAM Row Address Strobe: This output is used to latch the row address on rising edge of SDCLKO. It is used with commands for Bank Activate, Precharge, and Mode Register Write. Active-Low SDRAM Column Address Strobe: This output is used to latch the column address on the rising edge of SDCLKO. It is used with commands for Bank Activate, Precharge, and Mode Register Write. Active-Low SDRAM Write Enable: This output enables write operation and auto precharge.
R9 P15 O
SCAS
N7
O
SWE
R7 T8 M7 T11 N11 T7
O
SDMASK[0] SDMASK[1] SDMASK[2] SDMASK[3] SDCLKO
O
SDRAM Mask 0 to 3: When high, a write is done for that byte. The least significant byte is SDATA7 to SDATA0. The most significant byte is SDATA31 to SDATA24. SDRAM CLK Out: System clock output to the SDRAM. This clock is a buffered version of SYSCLKI. System Clock In: 100MHz System Clock input to the DS33Z44, used for internal operation. This clock is buffered and provided at SDCLKO for the SDRAM interface. The DS33Z44 also provides a divided version output at the REF_CLKO pin. A clock supply with 100ppm frequency accuracy is suggested. Active-Low SDRAM Chip Select: This output enables SDRAM access. QUEUE STATUS
O (4mA)
SYSCLKI
T15
I
SDCS
P8
O
QOVF1 QOVF2 QOVF3 QOVF4
C7 C8 B8 A8 O
Queue Overflow Port n: This pin goes high when the transmit or receive queue has overflowed. This pin will go low when the high watermark is reached again. This pin functions in both software and hardware mode. JTAG INTERFACE
JTRST
E6 D4 E5 E4 F7
Ipu Ipu Oz Ipu Ipu
Active-Low JTAG Reset JTAG Clock JTAG Data In JTAG Data Out JTAG Mode Select
JTCLK JTDO JTDI JTMS
27 of 181
DS33Z44 Quad Ethernet Mapper NAME PIN TYPE POWER SUPPLIES VDD3.3 G3-G10, H3-H10 C1, D2, E3, E14, F4, F13, G12, K12, L13, M4, M14, N3, P2 E7, E8, J3-J10, K3-K10, L3-L10, M10 F3, F8, F9, G1 I Connect to 3.3V Power Supply FUNCTION
VDD1.8
I
Connect to 1.8V Power Supply
VSS
I
Connect to Common Supply Ground
N.C.
--
No Connect
28 of 181
DS33Z44 Quad Ethernet Mapper
Figure 7-1. 256-Ball CSBGA Pinout
1 A B C D A[0] A[1] VDD1.8 CS RD TCLKI1 N.C. RSER1 TCLKI2 RSER2 RDEN2 TCLKI3 RDEN3 RSER3 TCLKI4 RDEN4 2 A[2] A[3] A[4] VDD1.8 WR TSER1 RCLKI1 RDEN1 TSER2 TDEN2 RCLKI2 TSER3 RCLKI3 VDD1.8 TSER4 RSER4 3 A[5] A[6] A[7] INT 4 A[8] A[9] RMIIMIIS JTCLK 5 D[0] D[3] D[6] 6 D[1] D[4] D[7] 7 D[2] D[5] QOVF1 MODEC1 8 QOVF4 QOVF3 QOVF2 RST 9 10 11 12 13 14 VDD1.8 RXD4[2] RXD4[3] 15 16 TX_CLK1 FULLDS1 RX_CLK1 FULLDS4 RX_CLK4 TXD1[0] TXD1[1] TXD1[2] H10S1 AFCS1 RX_DV1 RXD1[0] RXD1[1] RXD1[2] H10S4 AFCS4 RXD4[0] RXD4[1] DCEDTES TX_CLK4 RFCLKO REF_CLK RX_DV4 TXD4[0] TXD4[1] TXD4[2]
HWMODE MODEC0 JTRST CKPHA VDD3.3 VDD3.3 VSS VSS VSS
RX_CRS1 COLDET1 RX_ERR4 SPI_CS VDD1.8 TX_EN4 TXD3[2] RXD3[2] RXD2[0] VDD1.8
E F G H J K L M N P R T
VDD1.8 N.C. VDD3.3 VDD3.3 VSS VSS VSS SDATA[11] VDD1.8 TDEN3 TDEN4 RCLKI4
JTDI VDD1.8 VDD3.3 VDD3.3 VSS VSS VSS VDD1.8
JTDO TDEN1 VDD3.3 VDD3.3 VSS VSS VSS
VSS JTMS VDD3.3 VDD3.3 VSS VSS VSS
VSS N.C. VDD3.3 VDD3.3 VSS VSS VSS SDA[7] SDA[8] SDCS SBA[0]
TXD1[3] N.C. VDD3.3 VDD3.3 VSS VSS VSS SDA[4] SDA[5] SDA[9] SBA[1] SDA[11]
TX_EN1 MDIO VDD3.3 VDD3.3 VSS VSS VSS VSS SDA[6] SDA[10] SDA[0] SDA[1]
RXD1[3] MDC RX_ERR3
RX_ERR1 H10S3 VDD1.8
VDD1.8 RX_CRS4 TXD3[1] TXD3[3] RXD3[1] RXD2[1] TX_EN2 VDD1.8
TX_EN3 TXD3[0] RXD3[0] RXD2[2] FULLDS2 RX_DV2 TXD2[2]
TXD4[3] COLDET4 TX_CLK3 RX_CLK3 AFCS2 RXD2[3] RX_CLK2
COLDET3 FULLDS3 AFCS3 RX_DV3 H10S2 RXD3[3] VDD1.8 SDATA[29]
SDATA[12] SDATA[10] SDMASK[1] SCAS
SDATA[31] SDATA[30] SDATA[28]
SDMASK[3] SDATA[17] SDATA[27]
RX_CRS3 TX_CLK2
SDATA[13] SDATA[14] SDATA[8]
TXD2[3] SDATA[26] RX_CRS2 SRAS COLDET2 TXD2[1] RX_ERR2
SDATA[15] SDATA[1] SDATA[9] SDATA[7] SDATA[0] SDATA[3] SDATA[6] SDATA[2] SDATA[4] SDATA[5] SWE
SDA[3] SDA[2]
SDATA[18] SDATA[25] SDATA[24]
SDATA[16] SDATA[22] SDATA[23] TXD2[0]
SDCLKO SDMASK[0]
SDMASK[2] SDATA[20] SDATA[19] SDATA[21] SYSCLKI
29 of 181
DS33Z44 Quad Ethernet Mapper
8
FUNCTIONAL DESCRIPTION
The DS33Z44 provides interconnection and mapping functionality between Ethernet Packet Systems and WAN Time-Division Multiplexed (TDM) systems such as T1/E1/J1, HDSL, and T3/E3. The device is composed of four 10/100 Ethernet MACs, Packet Arbiter, four Committed Information Rate controllers (CIR), four HDLC/X.86(LAPS) Mappers, SDRAM interface, control ports, and Bit Error Rate Tester (BERT). The Ethernet Packet interfaces support MII and RMII interfaces allowing DSZ33Z44 to connect to commercially available Ethernet PHY and MAC devices. The Ethernet interfaces can be individually configured for 10 Mbit/s or 100 Mbit/s service, in DTE and DCE configurations. The DS33Z44 MAC interface can be configured to reject frames with bad FCS and short frames (less than 64 bytes). Ethernet frames are queued and stored in external 32-bit SDRAM. The DS33Z44 SDRAM controller enables connection to a 128Mbit SDRAM without external glue logic, at clock frequencies up to 100 MHz. The SDRAM is used for both the Transmit and Receive Data Queues. The Receive Queue stores data to be sent from the Packet interface to the WAN interface. The Transmit Queue stores data to be sent from the WAN interface to the Packet interface. The external SDRAM can accommodate up to 8192 frames with a maximum frame size of 2016 bytes. The sizing of the queues can be adjusted by software. The user can also program high and low watermarks for each queue that can be used for automatic or manual flow control. The packet data stored in the SDRAM is encapsulated in HDLC or X.86 (LAPS) to be transmitted over the WAN interfaces. The device also provides the capability for bit and packet scrambling. The WAN interfaces also receive encapsulated Ethernet packets and transmit the extracted packets over the Ethernet ports. The WAN physical interface supports serial data streams up to 52 Mbit/s. The WAN serial ports can operate with a gapped clock, and can be connected to a framer, electrical LIU, optical transceiver, or T/ECarrier transceiver for transmission to the WAN. The WAN interfaces can be seamlessly connected to the Dallas Semiconductor/Maxim T1/E1/J1 Framers, Line Interface Units (LIUs), and Single-Chip Transceivers (SCTs). The WAN interfaces can also be seamlessly connected to the Dallas Semiconductor/Maxim T3/E3/STS-1 framers, LIUs, and SCTs to provide T3, E3, and STS1 connectivity. The DS33Z44 can be configured through an 8-bit microprocessor interface port. A serial EEPROM (SPI) interface and hardware mode are also included for applications without a host microprocessor. Operation without an external host simplifies and reduces the cost of typical applications such as connectivity to T1/T3 and E1/E3 front ends. The DS33Z44 also provides 2 on-board clock dividers for the System Clock input and Reference Clock Input for the 802.3 interfaces, further reducing the need for ancillary devices.
8.1
PROCESSOR INTERFACE
Microprocessor control of the DS33Z44 is accomplished through the 20 interface pins of the microprocessor port. The 8-bit parallel data bus can be configured for Intel or Motorola modes of operation with the two MODEC[1:0] pins. When MODEC[1:0] = 00 and HWMODE = 0, bus timing is in Intel mode, as shown in Figure 11-9 and Figure 11-10. When MODEC[1:0] = 01 and HWMODE = 0, bus timing is in Motorola mode, as shown in Figure 11-11 and Figure 11-12. The address space is mapped through the use of eight address lines, A0-A7. Multiplexed Mode is not supported on the processor interface. The Chip Select (CS) pin must be brought to a logic low level to gain read and write access to the microprocessor port. With Intel timing selected, the Read (RD) and Write (WR) pins are used to indicate read and write operations and latch data through the interface. With Motorola timing selected, the Read-Write (RW) pin is used to indicate read and write operations while the Data Strobe (DS) pin is used to latch data through the interface. The interrupt output pin (INT) is an open-drain output that will assert a logic-low level upon a number of software maskable interrupt conditions. This pin is normally connected to the microprocessor interrupt input. The register map is shown in Table 9-1.
30 of 181
DS33Z44 Quad Ethernet Mapper
8.1.1
Read-Write/Data Strobe Modes
The processor interface can operate in either read-write strobe mode or data strobe mode. When MODEC[1:0] = 00 and HWMODE pin = 0 the read-write strobe mode is enabled and a negative pulse on RD performs a read cycle, and a negative pulse on WR performs a write cycle. When MODEC[1:0] pins = 01 and HWMODE pin = 0 the data strobe mode is enabled and a negative pulse on DS when RW is high performs a read cycle, and a negative pulse on DS when RW is low performs a write cycle. The read-write strobe mode is commonly called the "Intel" mode, and the data strobe mode is commonly called the "Motorola" mode.
8.1.2
Clear On Read
The latched status registers will clear on a read access. It is important to note that in a multi-task software environment, the user should handle all status conditions of each register at the same time to avoid inadvertently clearing status conditions. The latched status register bits are carefully designed so that an event occurrence cannot collide with a user read access.
8.1.3
Interrupt and Pin Modes
The interrupt (INT) pin is configurable to drive high or float when not active. The INTM bit controls the pin configuration, when it is set the INT pin will drive high when not active. After reset, the INT pin is in high-impedance mode until an interrupt source is active and enabled to drive the interrupt pin.
8.2
SPI SERIAL EEPROM INTERFACE
The SPI interface is a 4-signal serial interface that allows connection to a serial EEPROM for initialization information. The DS33Z44 will act as an SPI Master when configured with MODEC[1:0] to read from an external Serial EEPROM. The reading sequence is commenced upon initial reset or rising edge of the RST input pin. The CKPHA pin controls the sampling and update edges of the MISO and MOSI signals. The MISO data can be sampled on rising or falling edge of SPICK. The MOSI (Master Out Slave In) can be selectively output on the rising or falling edge of SPICK. The SPICK is generated by the DS33Z44 at a frequency of 8.33 MHz. This frequency is derived from an external SYSCLKI (100 MHz). The instruction to initiate a read is 0000x011; this is followed by the address location 0. The SPI_CS is low till the data addressed (Table 10-1) is read and latched. The DS33Z44 will provide the starting address (0000000) and the data is sequentially latched till the last data is read and latched. The MAC-specific registers that are addressed indirectly are written at the end of the normal control registers. More details of the programming sequence an functional timing information can be found in Section 10.3. The indirect registers related to the MAC are programmed using a special command format as shown in Table 10-2.
31 of 181
DS33Z44 Quad Ethernet Mapper
8.3
* *
CLOCK STRUCTURE
Serial Transmit Data (TCLKI1-4) and Serial Receive Data (RCLKI1-4) clock inputs are used to transfer data from the serial interface. These clocks can be continuous or gapped. System Clock (SYSCLKI) input. Used for internal operation. This clock input cannot be a gapped clock. A clock supply with +/- 100 ppm frequency accuracy is suggested. A buffered version of this clock is provided on the SDCLKO pin for the operation of the SDRAM. A divided and buffered version of this clock is provided on the SPICK pin for Serial EEPROM operation. A divided and buffered version of this clock is provided on REFCLKO for the RMII/MII interface. Packet Interface Reference clock (REF_CLK) input that can be 25 or 50 MHz. This clock is used as the timing reference for the RMII/MII interface. The user can utilize the built-in REFCLKO output clock to drive this input. The Transmit and Receive clocks for the MII Interface (TX_CLKn and RX_CLKn). In DTE mode, these are input pins and accept clocks provided by an Ethernet PHY. In the DCE mode, these are output pins and will output an internally generated clock to the Ethernet PHY. The output clocks are generated by the internal division of REF_CLK. REF_CLKO is an output clock that is generated by dividing the 100 MHz System clock (SYSCLKI) by 2 or 4. This output clock can be used as an input to REF_CLKI, allowing the user to have one less oscillator for the system. A Management Data Clock (MDC) output is derived from SYSCLKI and is used for information transfer between the internal Ethernet MAC and external PHY. The MDC clock frequency is 1.67 MHz.
The DS33Z44 clocks sources and functions are as follows:
*
*
*
*
The following table provides the different clocking options for the Ethernet interface.
Table 8-1. Clocking Options for the Ethernet Interface
RMII/MII Mode Selection 10/100Mbits Mode Selection RMIIMIIS Input Pin REF_CLKI Frequency TX_CLKn and RX_CLKn Divider Ratio (derived from REF_CLKI) TX_CLKn, RX_CLKn Frequency MDC Output Clock Frequency REFCLKO Divider Ratio (derived from SYSCLKI ) REF_CLKO Output Frequency MII 100Mbit/s 0 25 MHz 1 25 MHz 1.67 MHz 4 25 MHz MII 10Mbit/s 0 25 MHz 10 2.5 MHz 1.67 MHz 4 25 MHz RMII 100Mbit/s 1 50 MHz NA NA 1.67 MHz 2 50 MHz RMII 10Mbit/s 1 50 MHz NA NA 1.67 MHz 2 50 MHz
Input Input Divider Ratio I/O Output Divider Ratio Output
32 of 181
DS33Z44 Quad Ethernet Mapper
Figure 8-1. Clocking for the DS33Z44
Eprom
SPI_SCLK (max 8.33MHz) 50 or 25 Mhz Oscillator Buffer Div by 1,2,4,10 Output clocks: 50MHz, 25 MHz, 2.5 MHz REF_CLKI
TCLKI1 RCLKI1 TCLKI2 RCLKI2 TCLKI3 RCLKI3
Line 1
HDLC + Serial Interface X.86 HDLC + Serial Interface Cross Connect X.86 HDLC + Serial Interface X.86 HDLC + Serial Interface X.86
CIR
TX_CLK1 MAC RMII MII CIR TX_CLK2 MAC RMII MII Arbiter CIR MAC RMII MII TX_CLK3 RX_CLK3 RX_CLK2 RX_CLK1 MDC
Line 2
Line 3
TCLKI4 RCLKI4
Line 4
CIR
MAC RMII MII
TX_CLK4 RX_CLK4 100 Mhz Oscillator
SDRAM Interface
Buffer Dev Div by 2,4,12 Output Clocks 25MHz, 50MHz SDCLKO REF_CLKO 50 or 25 Mhz
SYSCLKI
SDRAM
33 of 181
DS33Z44 Quad Ethernet Mapper
8.3.1
Serial Interface Clock Modes
Serial Interface timing is determined by the line clocks. Both the transmit and receive clocks (TCLKI1-4 and RCLKI1-4) are inputs, and can be gapped.
8.3.2
Ethernet Interface Clock Modes
The Ethernet interfaces can be configured for MII or RMII operation by setting the hardware pin RMIIMIIS. When in MII mode, 4 bits are sent and received every clock cycle. The MII clocks (TX_CLK1-4 and RX_CLK1-4) are derived from the REF_CLK, which must be 25 MHz. The DS33Z44 can derive the 25 MHz and 2.5 MHz clocks from any external 25 MHz reference. These derived clocks are output in the DCE Mode. The user may choose to use the REF_CLKO output when in DCE mode to avoid adding another system clock. DCE Mode is only relevant when MII Mode is selected. In RMII mode, the receive and transmit timing is synchronous to the 50 MHz clock input on the REF_CLK pin. The selection for the reference frequency is controlled by RMIIMIIS pin. The user must set this selection in accordance with the REF_CLK input. The REF_CLKO output is generated by a clock divider circuit utilizing the 100 MHz system clock from SYSCLKI. The RMIIMIIS pin selects the divider ratio. The resulting clock is buffered and output on the REF_CLKO pin. This output can be used as a REF_CLK for the MII/RMII interface by connecting REF_CLKO to REF_CLK. The REF_CLKO function can be turned off with the GL.CR1.RFOO bit.
Table 8-2. LAN Interface Clock Selection
RMIIMIIS HARDWARE PIN STATE 0 1 REQUIRED REF_CLK FREQUENCY 25 MHz 100 ppm 50 MHz 100 ppm ETHERNET INTERFACE MODE The interface is MII up to 100 Mbit/s. The interface is RMII.
34 of 181
DS33Z44 Quad Ethernet Mapper
8.4
RESETS AND LOW-POWER MODES
The external RST pin and the global reset bit in GL.CR1 create an internal global reset signal. The global reset signal resets the status and control registers on the chip (except the GL.CR1.RST bit) to their default values and resets all the other flops to their reset values. The processor bus output signals are also placed in high-impedance mode when the RST pin is active (low). The global reset bit (GL.CR1.RST) stays set after a one is written to it, but is reset to zero when the external RST pin is active or when a zero is written to it. Allow 5 ms after initiating a reset condition for the reset operation to complete. The Serial Interface reset bit in LI.RSTPD resets all the status and control registers on the Serial Interface to their default values, except for the LI.RSTPD.RST bit. The Serial Interface includes the HDLC encoder/decoder, X86 encoder and decoder and the corresponding serial port. The Serial Interface reset bit (LI.RSTPD.RST) stays set after a one is written to it, but is reset to zero when the global reset signal is active or when a zero is written to it. The reset signal SU.RSTPD resets all the status and control registers for the Ethernet Interface (MII/RMII interface and the MAC) to their default values, except for the SU.RSTPD.RST bit. The SU.RSTPD.RST bit stays set after a one is written to it, but is reset to zero when the global reset signal is active or when a zero is written to it. None of the reset bits are "self-clearing" and must be cleared by the user by writing a 0 following the 1. If the DS33Z44 is configured to use an external EEPROM, the DS33Z44 will provide the startup sequence to read the device settings upon the rising edge of the external reset pin. When using the external EEPROM, the device is configured within 5 ms. This is dependent on an EEPROM clock of 8.33 MHz. The functional timing is provided by Figure 10-10.
Table 8-3. Reset Functions
RESET FUNCTION Hardware Device Reset Hardware JTAG Reset Global Software Reset Serial interface Reset Ethernet Interface Reset Queue Pointer Reset LOCATION
RST pin JTRST pin
COMMENTS Transition to a logic 0 to a logic 1 resets the device. Resets the JTAG test port. Writing to this bit resets the device. Writing to this bit resets a Serial Interface. Writing to this bit resets a Packet Interface. Writing to this bit resets the Queue Pointers
GL.CR1 LI.RSTPD SU.RSTPD GL.C1QPR
There are several features in the DS33Z44 to reduce power consumption. The reset bits of the LI.RSTPD and SU.RSTPD registers also place the Serial and Ethernet interfaces in a low-power mode while in their active state. Additionally, the RST pin may be held low indefinitely to keep the entire device in a low-power mode. Note that exiting the low-power condition requires re-initialization and configuration.
35 of 181
DS33Z44 Quad Ethernet Mapper
8.5
INITIALIZATION AND CONFIGURATION
EXAMPLE DEVICE INITIALIZATION SEQUENCE: STEP 1: Reset the device by pulling the RST pin low or by using the software reset bits outlined in Section 8.4. Clear all reset bits. Allow 5 milliseconds for the reset recovery. STEP 2: Check the Device ID in the GL.IDRL and GL.IDRH registers. STEP 3: Configure the system clocks. Allow the clock system to properly adjust. STEP 4: Initialize the entire remainder of the register space with 00h (or otherwise if specifically noted in the register's definition), including the reserved bits and reserved register locations. STEP 5: Write FFFFFFFFh to the MAC indirect addresses 010Ch through 010Fh. STEP 6: Setup connections in the GL.CON1-4 registers. STEP 7: Configure the Serial Port register spaces as needed. STEP 8: Configure the Ethernet Port register spaces as needed. STEP 9: Configure the Ethernet MAC indirect registers as needed. STEP 10: Configure the external Ethernet PHYs through the MDIO interface. STEP 11: Clear all counters and latched status bits. STEP 12: Set Queue sizes in the Arbiter and reset the queue pointers for all Ethernet and Serial interfaces. STEP 13: Enable Interrupts as needed. STEP 14: Begin handling interrupts and latched status events.
8.6
GLOBAL RESOURCES
A set of Global registers are located at 0F0h-0FFh. The global registers include Global resets, global interrupt status, interrupt masking, clock configuration, and the Device ID registers. See the Global Register Definitions in Table 9-2.
8.7
PER-PORT RESOURCES
The DS33Z44 contains a common set of global registers, BERT, and Arbiter. The four Serial (Line) Interfaces each have a set of registers for configuration and control, denoted in this document with the "LI." prefix. The four Ethernet (Subscriber) Interfaces each have a set of registers for configuration and control, denoted in this document with the "SU." prefix.
36 of 181
DS33Z44 Quad Ethernet Mapper
8.8
DEVICE INTERRUPTS
Figure 8-2 diagrams the flow of interrupt conditions from their source status bits through the multiple levels of information registers and mask bits to the interrupt pin. When an interrupt occurs, the host can read the Global Latched Status registers GL.LIS, GL.SIS, GL.BIS, and GL.TRQIS to initially determine the source of the interrupt. The host can then read the LI.TQCTLS, LI.TPPSRL, LI.RPPSRL, LI.RX86S, SU.QCRLS, or BSRL registers to further identify the source of the interrupt(s). In order to maintain software compatibility with the multiport devices in the product family, the global interrupt status and interrupt enable registers have been preserved, but do not need to be used. If GL.TRQIS is determined to be the interrupt source, the host will then read the LI.TPPSRL and LI.RPPSRL registers for the cause of the interrupt. If GL.LIS is determined to be the interrupt source, the host will then read the LI.TQCTLS, LI.TPPSRL, LI.RPPSRL, and LI.RX86S registers for the source of the interrupt. If GL.SIS is the source, the host will then read the SU.QCRLS register for the source of the interrupt. If GL.BIS is the source, the host will then read the BSRL register for the source of the interrupt. All Global Interrupt Status Register bits are real-time bits that will clear once the appropriate interrupt has been serviced and cleared, as long as no additional, enabled interrupt conditions are present in the associated status register. All Latched Status bits must be cleared by the host writing a "1" to the bit location of the interrupt condition that has been serviced. In order for individual status conditions to transmit their status to the next level of interrupt logic, they must be enabled by placing a "1" in the associated bit location of the correct Interrupt Enable Register. The Interrupt enable registers are LI.TPPSRIE, LI.RPPSRIE, LI.RX86LSIE, BSRIE, SU.QRIE, GL.LIE, GL.SIE, GL.BIE, and GL.TRQIE. Latched Status bits that have been enabled via Interrupt Enable registers are allowed to pass their interrupt conditions to the Global Interrupt Status Registers. The Interrupt enable registers allow individual Latched Status conditions to generate an interrupt, but when set to zero, they do not prevent the Latched Status bits from being set. Therefore, when servicing interrupts, the user should AND the Latched Status with the associated Interrupt Enable Register in order to exclude bits for which the user wished to prevent interrupt service. This architecture allows the application host to periodically poll the latched status bits for non-interrupt conditions, while using only one set of registers. Note the bit-orders of SU.QRIE and SU.QCRLS are different. Note that the inactive state of the interrupt output pin is configurable. The INTM bit in GL.CR1 controls the inactive state of the interrupt pin, allowing selection of a pull-up resistor or active driver. The interrupt structure is designed to efficiently guide the user to the source of an enabled interrupt source. The latched status bits for the interrupting entity must be read to clear the interrupt. Also reading the latched status bit will reset all bits in that register. During a reset condition, interrupts cannot be generated. The interrupts from any source can be blocked at a global level by the placing a zero in the global interrupt enable registers (GL.LIE, GL.SIE, GL.BIE, and GL.TRQIE). Reading the Latched Status bit for all interrupt generating events will clear the interrupt status bit and Interrupt signal will be de-asserted.
37 of 181
DS33Z44 Quad Ethernet Mapper
Figure 8-2. Device Interrupt Information Flow Diagram
Receive FCS Errored Packet Receive Aborted Packet Receive Invalid Packet Detected Receive Small Packet Detected Receive Large Packet Detected Receive FCS Errored Packet Count Receive Aborted Packet Count Receive Size Violation Packet Count Transmit Errored Packet Insertion Finished SAPI High is not equal to LI.TRX86SAPIH SAPI Low is not equal to LI.TRX86SAPIL Control is not equal to LI.TRX8C Address is not equal to LI.TRX86A Transmit Queue FIFO Overflowed Transmit Queue Overflow Transmit Queue for Connection Exceeded Low Threshold Transmit Queue for Connection Exceeded High Threshold Receive Queue FIFO Overflowed Receive Queue Overflow Receive Queue for Connection Exceeded Low Threshold Receive Queue for Connection Exceeded High Threshold Performance Monitor Update Bit Error Detected Bit Error Count Out Of Synchronization
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
LI.RPPSRIE
Drawing Legend:
Interrupt Status Registers Interrupt Enable Registers Register Name
LI.RPPSL
Register Name
LI.TPPSRIE
LI.TPPSRL
LI.RX86LSIE
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
Ports 2-4
GL.TRQIS G.LIS
LI.RX86S
Ports 2-4
Ports 2-4
LI.TQCTLS
LI.TQTIE
Ports 2-4
G.LIE
GL.TRQIE
G.SIS
SU.QCRLS
SU.QRIE
Ports 2-4
G.BIS
BSRIE
BSRL
38 of 181
G.BIE
G.SIE
Interrupt Pin
DS33Z44 Quad Ethernet Mapper
8.9
SERIAL INTERFACES
The four Serial Interfaces support time-division multiplexed, serial data I/O up to 52 Mbit/s. The Serial Interface receives and transmits encapsulated Ethernet packets. Each physical interface consists of a data pin, clock pin, and an enable/sync pin in both the transmit and receive directions. The Serial Interfaces can operate with a gapped clock, and can be connected to a framer, electrical LIU, optical transceiver, or T/E-Carrier transceiver for transmission to the WAN. The Serial Interface can be seamlessly connected to the Dallas Semiconductor/Maxim T1/E1/J1 Framers, Line Interface Units (LIUs), and Single-Chip Transceivers (SCTs). The interface can also be seamlessly connected to the Dallas Semiconductor/Maxim T3/E3/STS-1 Framers, LIUs, and SCTs to provide T3, E3, and STS1 connectivity.
8.10 CONNECTIONS AND QUEUES
The device provides bidirectional cross-connections between the multiple Ethernet ports and Serial ports when operating in software mode. Each connection has an associated transmit and receive queue. Note that the terms "Transmit Queue" and "Receive Queue" are with respect to the Ethernet Interface. The Receive queue is for data arriving from Ethernet interface to be transmitted to the WAN interface. The Transmit queue is for data arriving from the WAN Serial Interface to be transmitted to the Ethernet Interface. Hence the transmit and receive direction terminology is the same as is used for the Ethernet MAC Interface. The user can define the connection and the size of the transmit and receive queues. The size is adjustable in units of 32(by 2048 byte) packets. The external SDRAM can hold up to 8192 packets of data. The user must ensure that all the connection queues do no exceed this limit. The user also must ensure that the transmit and receive queues do not overlap each other. Uni-directional connections are not supported. When the user needs to modify the queue sizes, all connections must be torn down and re-established. When a connection is disconnected all transmit and receive queues associated with the connection are flushed and a "1' is sourced towards the Serial transmit and the HDLC receiver. The clocks to the HDLC are sourced a "0". If multiple connections are established and a connection is disconnected, the other queue sizes cannot be adjusted to consume the free space of the disconnected queue. The established connections can continue to function as long as their associated queue sizes are not changed. The user can also program high and low watermarks for each queue. If the queue size grows past the High watermark, an interrupt is generated if enabled. The registers of relevance are described in Table 8-4. Registers Related to Connections and Queues. AR.TQSC1-4 provide the size of the transmit queues for the connections. The High Watermark will set a latched status bit. The latched status bit will clear when the register is read. The status bit is indicated by LI.TQCTLS.TQHTS. Interrupts can be enabled on the latched bit events by LI.TQTIE. A latched status bit (LI.TQCTLS.TQLTS) is also set when the queue crosses a low watermark. The Receive Queue functions in a similar manner. Note that the user must ensure that sizes and watermarks are set in accordance with the configuration speed of the Ethernet and Serial interfaces. The DS33Z44 does not provide error indication if the user creates a connection and queue that overwrites data for another connection queue. The user must take care in setting the queue sizes and watermarks. The registers of relevance are AR.RQSC1-4 and SU.QCRLS. Queue size should never be set to 0.
39 of 181
DS33Z44 Quad Ethernet Mapper It is recommended that the user reset the queue pointers for the connection after disconnection. The pointers must be reset before a connection is made. If this disconnect/connect procedure is not followed, incorrect data may be transmitted. The proper procedure for setting up a connection follows: * * * * * Set up the queue sizes for both transmit and receive queue (AR.TQSC1-4 and AR.RQSC1-4). Set up the high/low thresholds and interrupt enables if desired (GL.TRQIE, LI.TQTIE, SU.QRIE) Reset all the pointers for the connection desired (GL.C1QPR) Set up the connections (GL.CON1-4) If a connection is disconnected, reset the queue pointers after the disconnection.
Figure 8-3. Transmit Connection Diagram
Line 1 connection register GL.CON1 HDLC 1 Line[2:0]
Line 1 Multiplexer
HDLC 2
HDLC 3
HDLC 4
Line 1 Transmit Line 4 Transmit
40 of 181
DS33Z44 Quad Ethernet Mapper
Figure 8-4. Receive Connection Diagram
Line 1 connection register GL.CON1 LINE2:0
HDLC 1 Rx
Line 1 HDLC 2 Rx "1" Demux
HDLC 3 Rx
HDLC 4 Rx Line 1 Receive
Line 4 Receive
Table 8-4. Registers Related to Connections and Queues
REGISTER GL.CON1-4 AR.TQSC1-4 AR.RQSC1-4 GL.TRQIE GL.TRQIS LI.TQTIE LI.TQCTLS SU.QRIE SU.QCRLS GL.C1QPR- GL.C4QPR FUNCTION Enable connection between the Ethernet Interfaces and the Serial Interfaces. Note that once connection is set up, then the queues and thresholds can be setup for that connection. Size for the Transmit Queue in Number of 32-2K packets. Size for the Receive Queue in Number of 32-2K packets. Interrupt enable for items related to the connections at the global level Interrupt enable status for items related to the connections at the global level Enables for the Transmit queue crossing high and low thresholds Latched status bits for connection high and low thresholds for the transmit queue. Enables for the receive queue crossing high and low thresholds Latched status bits for receive queue high and low thresholds. Reset the connection pointers.
41 of 181
DS33Z44 Quad Ethernet Mapper
8.11 ARBITER
The Arbiter manages the transport between the Ethernet ports and the Serial ports. It is responsible for queuing and dequeuing packets to a single external SDRAM. The arbiter handles requests from the HDLC and MAC to transfer data to and from the SDRAM.
8.12 FLOW CONTROL
Flow control may be required to ensure that data queues do not overflow and packets are not lost. The DS33Z44 allows for optional flow control based on the queue high watermark or through host processor intervention. There are 2 basic mechanisms that are used for flow control: * * In half duplex mode, a jam sequence is sent that causes collisions at the far end. The collisions cause the transmitting node to reduce the rate of transmission. In full duplex mode, flow control is initiated by the receiving node sending a pause frame. The pause frame has a timer parameter that determines the pause timeout to be used by the transmitting node.
Note that the terms "transmit queue" and "receive queue" are with respect to the Ethernet Interface. The Receive Queue is the queue for the data that arrives on the MII/RMII interface, is processed by the MAC and stored in the SDRAM. Transmit queue is for data that arrives from the Serial port, is processed by the HDLC and stored in the SDRAM to be sent to the MAC transmitter. The following flow control options are possible: * * Automatic flow control can be enabled in hardware mode by the AFCSn and FULLDSn pins Automatic flow control can be enabled in software mode with the SU.GCR.ATFLOW bit. Note that the user does not have control over SU.MACFCR.FCE and FCB bits if ATFLOW is set. The mechanism of sending pause or jam is dependent only on the receive queue high threshold. Manual flow control can be performed through software when SU.GCR.ATFLOW=0. The host processor must monitor the receive queues and generate pause frames (full duplex) and/or jam bytes through the SU.MACFCR.FCB, SU.GCR.JAME, and SU.MACFCR FCE bits.
*
Note that in order to use flow control the minimum receive queue size must be set to at least 2 (AR.RQSC1-4) and the receive queue high threshold (SU.RQHT) must be set to 1. If the high threshold is set to the same value as the queue size, automatic flow control will not be effective. The high threshold must always be set to less than the corresponding queue size. The following table provides all the options on flow control mechanism for DS33Z44.
Table 8-5. Options for Flow Control
No flow control 1 0 0 N/A N/A N/A N/A N/A
HARDWARE MODE Half duplex, Flow control With respect to SU.RQHT 1 1 0 N/A SOFTWARE MODE
Configuration HWMODE Pin AFCSn Pin FULLDSn Pin ATFLOW Bit JAME Bit FCB Bit (Pause) FCE Bit Pause Timer
Full duplex, Flow control With respect to SU.RQHT 1 1 1 N/A N/A Controlled automatically Set to AFCSn pin= High Set to 140
Half Duplex; Manual Flow Control 0 N/A 0 0 Controlled By User NA Controlled By User N/A
Half Duplex; Automatic Flow Control 0 N/A 0 1 Controlled automatically NA Controlled automatically N/A
Full Duplex; Manual Flow Control 0 N/A 1 0 N/A Controlled by user Controlled By User Programmed by user
Full Duplex; Automatic Flow Control 0 N/A 1 1 N/A Controlled automatically Controlled Automatically Programmed by user
N/A N/A Set to AFCSn pin= Low N/A
42 of 181
DS33Z44 Quad Ethernet Mapper
8.12.1 Full Duplex Flow control
In the software mode automatic flow control is enabled by default. The host processor can disable this functionality with SU.GCR.ATFLOW. In hardware mode, the user must apply a logic high level to the AFCSn pins to enable automatic flow control. The flow control mechanism is governed by the high watermarks (SU.RQHT). The SU.RQLT low threshold can be used as indication that the network congestion is clearing up. The value of SU.RQLT does not affect the flow control. When the connection queue high threshold is exceeded the DS33Z44 will send a pause frame with the timer value programmed by the user. See Table 8-7. MAC Control Registers for more information. It is recommended that 140 slots (140 by 64 bytes or 5120 bytes) be used as the standard timer value. The pause frame causes the distant transmitter to "pause for a time" before starting transmission again. The high and low thresholds for the receive queue are configurable by the user but it is recommended that the high threshold be set approximately 96 packets from the maximum size of the queue and the low threshold 96 packets lower than the high threshold. The DS33Z44 will send a pause frame as the queue has crossed the high threshold and a frame is received. Pause is sent every time a frame is received in the "high threshold state". The receive queue could keep growing if the round trip delay is beyond 2800 bytes. Pause control will only take care of temporary congestion it does not take care of systems where the traffic throughput is too high for the queue sizes selected. If the flow control is not effective the receive queue will eventually overflow. This is indicated by SU.QCRLS.RQOVFL latched bit. If the receive queue is overflowed any new frames will not be received. The user has the option of not enabling automatic flow control. In this case the thresholds and corresponding interrupt mechanism to send pause frame by writing to flow control busy bit in the MAC flow control registers SU.MACFCR.FCB, SU.GCR.JAME, and SU.MACFCR. This allows the user to set not only the watermarks but also to decide when to send a pause frame or not based on watermark crossings. On the receive side the user has control over whether to respond to the pause frame sent by the distant end (PCF bit). Note that if automatic flow control is enabled the user cannot modify the FCE bit in the MAC flow control register. On the Transmit queue the user has the option of setting high and low thresholds and corresponding interrupts. There is no automatic flow control mechanism for data received from the Serial side waiting for transmission over the Ethernet interface during times of heavy Ethernet congestion.
43 of 181
DS33Z44 Quad Ethernet Mapper
Figure 8-5. Flow Control Using Pause Control Frame
8
Receive Queue Low Water Rx Data Receive Queue Growth Receive Queue High Water Mark Initiate Flow control
8.12.2 Half Duplex Flow control
Half duplex flow control uses a jamming sequence to exert backpressure on the transmitting node. The receiving node jams the first 4 bytes of a packet that are received from the MAC in order to cause collisions at the distant end. In both 100 Mbit/s and 10 Mbit/s MII/RMII modes, 4 bytes are jammed upon reception of a new frame. Note that the jamming mechanism does not jam the current frame that is being received during the watermark crossing, but will wait to jam the next frame after the SU.RQHT bit is set. If the queue remains above the high threshold, received frames will continue to be jammed. This jam sequence is stopped when the queue falls bellow the high threshold.
8.12.3 Host-Managed Flow control
Although automatic flow control is recommended, flow control by the host processor is also possible. By utilizing the high watermark interrupts, the host processor can manually issue pause frames or jam incoming packets to exert backpressure on the transmitting node. Pause frames can be initiated with SU.MACFCR.FCB bit. Jam sequences can be initiated be setting SU.GCR.JAME. The host can detect pause frames by monitoring SU.RFSB3.UF and SU.RFSB3.CF. Jammed frames will be indistinguishable from packet collisions.
44 of 181
DS33Z44 Quad Ethernet Mapper
8.13 ETHERNET INTERFACES
The four Ethernet Interfaces allow for direct connection to Ethernet PHYs. Each interface consists of a 10/100 Mbit/s MII/RMII interface and an Ethernet MAC. In RMII operation, the interface contains 8 signals with a reference clock of 50 MHz. In MII operation, the interface contains 12 signals and a clock reference of 25 MHz. The DS33Z44 can be configured to RMII or MII interface by the Hardware pin RMIIMIIS. The REF_CLKO output can be used to source the REF_CLK input. If the port is configured for MII in DCE mode, REF_CLK must be 25 MHz. The DS33Z44 will internally generate the TX_CLKn and RX_CLKn outputs (at 25 MHz for 100Mbps, 2.5 MHz for 10Mbps) required for DCE mode from the REF_CLK input. In DTE mode of operation, the TX_CLKn and RX_CLKn signals are generated by the PHY and are inputs to the DS33Z44. The data received from the MII or RMII interface is processed by the internal IEEE 802.3 complaint Ethernet MAC. The user can select the maximum frame size (up to 2016 bytes) that is received with the SU.RMFSRH and SU.RMFSRL registers. The maximum frame length (in bits) is the number specified in SU.RMFSRH and SU.RMFSRL multiplied by 8. Any programmed value greater than 2016 bytes will result in unpredictable behavior and should be avoided. The length is shown in Figure 8-6. IEEE 802.3 Ethernet Frame. The length includes only destination address, source address, VLAN tag (2 bytes), type length field, data and CRC32. The frame size is different than the 802.3 length field shown in the figure. Frames coming from the Ethernet PHY or received from the packet processor are rejected if greater than the maximum frame size specified. Each Ethernet frame sent or received generates status bits (SU.TFSH and SU.TFSL and SU.RFSB0 to SU.RFSB3). These are real time status registers and will change as each frame is sent or received. Hence they are useful to the user only when one frame is sent or received and the status is associated with the frame sent or received.
Figure 8-6. IEEE 802.3 Ethernet Frame
Preamble
SFD
Destination Adrs
Source Address
Type Lenght
Data
CRC32
7
1
6
6 Max Frame Length
2
46-1500
4
The distant end will normally reject the sent frames if jabber timeout, loss of carrier, excessive deferral, late collisions, excessive collisions, under run, deferred or collision errors occur. Transmission of a frame under any of theses errors will generate a status bit in SU.TFSL, SU.TFSH. The DS33Z44 provides user the option to automatically retransmit the frame if any of the errors have occurred through the bit settings in SU.TFRC. Deferred frames and heartbeat fail have separate resend control bits (SU.TFRC.TFBFCB and SU.TFRC.TPRHBC). If there is no carrier (indicated by the MAC Transmit Packet Status), the transmit queue (data from the Serial Interface to the SDRAM to Ethernet Interface) can be selectively flushed. This is controlled by SU.TFRC.NCFQ. The MAC circuitry generates a frame status for every frame that is received. This real time status can be read by SU.RFSB0 to SU.RFSB3. Note the frame status is the "real time" status and hence the value will change as new frames are received. Hence the real time status reflects the status in time and may not correspond to the current received frame being processed. This is also true for the transmitted frames. Frames with errors are usually rejected by the DS33Z44. The user has the option of accepting frames by settings in Receive Frame Rejection Control register (SU.RFRC). The user can program whether to reject or accept frames with the following errors: 45 of 181
DS33Z44 Quad Ethernet Mapper * * * * * * MII error asserted during the reception of the frame Dribbling bits occurred in the frame CRC error occurred Length error occurred--the length indicated by the frame length is inconsistent with the number of bytes received Control frame was received. The mode must be full duplex Unsupported control frame was received
Note that frames received that are runt frames or frames with collision will automatically be rejected. In Hardware Mode any frame received with errors is rejected and any frame transmitted with an error is retransmitted
Table 8-6. Registers Related to the Ethernet Port
REGISTER SU.TFRC SU.TFSL and SU.TFSH SU.RFSB0 to 3 SU.RFRC SU.RMFSRH and SU.RMFSRL SU.MACCR FUNCTION This register determines if the current frame is retransmitted due to various transmit errors. These two registers provide the real-time status of the transmit frame. Only apply to the last frame transmitted. These registers provide the real-time status for the received frame. Only apply to the last frame received. This register provides settings for reception or rejection of frame based on errors detected by the MAC. The settings for this register provide the maximum size of frames to be accepted from the MII/RMII receive interface. This register provides configuration control for the MAC.
46 of 181
DS33Z44 Quad Ethernet Mapper
8.13.1 DTE and DCE Mode
The Ethernet MII/RMII interfaces can be configured for DCE or DTE Mode. When the ports are configured in DTE Mode, they can be connected to Ethernet PHYs. In DCE mode, the ports can be connected to MII/RMII MAC devices other than an Ethernet PHY. The DTE/DCE connections for the DS33Z44 in MII mode are shown in the following two figures. In DCE Mode, the DS33Z44 transmitter is connected to an external receiver and DS33Z44 receiver is connected to an external MAC transmitter. The selection of DTE or DCE mode is done by the hardware pin DCEDTES.
Figure 8-7. Configured as DTE Connected to an Ethernet PHY in MII Mode
DS33Z44
Rx RXD[3:0]
Ethernet Phy RXD[3:0] Rx
DTE
RXDV RX_CLK RX_ERR RX_CRS
RXDV RX_CLK RX_ERR RX_CRS COL_DET TXD[3:0]
DCE
Arbiter WAN MAC
COL_DET TXD[3:0]
Tx Tx TX_CLK TX_EN MDIO MDC TX_CLK TX_EN MDIO MDC
47 of 181
DS33Z44 Quad Ethernet Mapper
Figure 8-8. DS33Z44 Configured as a DCE in MII Mode
DS33Z44
DCE Rx RXD[3:0] RXDV RX_CLK RX_ERR RX_CRS WAN Arbiter MAC COL_DET TXD[3:0] TX_CLK TX_EN MDIO MDC TXD[3:0] TX_EN TX_CLK TX_ERR RX_CRS COL_DET RXD[3:0]
DTE Tx
MAC
Tx
Rx RX_CLK RXDV MDIO MDC
8.14 ETHERNET MAC
Indirect addressing is required to access the MAC register settings. Writing to the MAC registers requires the SU.MACWD0-3 registers to be written with 4 bytes of data. The address must be written to SU.MACAWL and SU.MACAWH. A write command is issued by writing a zero to SU.MACRWC.MCRW and a one to MCS (MAC command status). MCS is cleared by the DS33Z44 when the operation is complete. Reading from the MAC registers requires the SU.MACRADH and SU.MACRADL registers to be written with the address for the read operation. A read command is issued by writing a one to SU.MACRWC.MCRW and a zero to SU.MACRWC.MCS. SU.MACRWC.MCS is cleared by the DS33Z44 when the operation is complete. After MCS is clear, valid data is available in SU.MACRD0-SU.MACRD3. Note that only one operation can be initiated (read or write) at one time. Data cannot be written or read from the MAC registers until the MCS bit has been cleared by the device. The MAC Registers are detailed in the following table.
48 of 181
DS33Z44 Quad Ethernet Mapper
Table 8-7. MAC Control Registers
ADDRESS REGISTER DESCRIPTION MAC Control Register. This register is used for programming full duplex, half duplex, promiscuous mode, and back-off limit for half duplex. The transmit and receive enable bits must be set for the MAC to operate. MAC Address High Register. This provides the physical address for this MAC. MAC Address Low Register. This provides the physical address for this MAC. Multicast Hash Table High Register Multicast Hash Table Low Register MII Address Register (only available for MAC1). The user can specify the address for the access to the PHY through MDIO interface. MII Data Register (only available for MAC1). The user can specify the data for the access to the PHY through MDIO interface. Flow Control Register MMC Control Register bit 0 for resetting the status counters
0000h-0003h
SU.MACCR
0004h-0007h
SU.MACAH
0008h-000Bh 000Ch-000Fh 0010h-0013h 0014h-0017h 0018h-001Bh 001Ch-001Fh 0100h-0103h
SU.MACAL SU.MACMAH SU.MACMAL SU.MACMIIA SU.MACMIID SU.MACFCR SU.MMCCTRL
Table 8-8. MAC Status Registers
ADDRESS 0200h-0203h 0204h-0207h 0300h-0303h 0308h-030Bh 030Ch-030Fh 0334h-0337h 0338h-033Bh REGISTER SU.RxFrmCntr SU.RxFrmOKCtr SU.TxFrmCtr SU.TxBytesCtr SU.TxBytesOkCtr SU.TxFrmUndr SU.TxBdFrmsCtr DESCRIPTION All Frames Received Counter Number of Received Frames that are Good Number of Frames Transmitted Number of Bytes Transmitted Number of Bytes Transmitted with good frames Transmit FIFO underflow counter Transmit Number of Frames Aborted
49 of 181
DS33Z44 Quad Ethernet Mapper
8.14.1 MII Mode Options
MODE/SPEED 10 Mbps half duplex DTE with flow control off 10 Mbps half duplex DTE with flow control 10 Mbps full duplex DTE Mode with no flow control In full duplex DTE mode the clocks are expected from the PHY. The flow control for a full duplex operation is using control frames. If the MAC receives a pause command the Transmitter is disabled for the time specified in the pause command. The pause command has a multicast address 01-80-62-00-00-01. The MAC can also initiate a pause control frame by SU.GCR. The duration field in the pause control frame is determined by settings in the MAC Flow Control Register. In half duplex mode collisions are not ignored. In half duplex mode collisions are not ignored. The flow control is through backpressure. FUNCTIONS Full duplex/half duplex is set through MAC registers. Hardware pin is used for DTE/DCE setting. In DTE the MII clocks are expected from the PHY interface. In DCE Mode the MII interface provides the clocks. In half duplex mode the flow control mechanism is backpressure. This is set by FCE bit in the MAC Control Register. The MAC will send JAM bits as required.
100 Mbps full duplex, DTE with flow control
100 Mbps half duplex, DTE with no flow control 100 Mbps half duplex, DTE with flow control 100 Mbps full duplex, DTE with no flow control 100 Mbps full duplex DCE mode
In full duplex DCE mode the clocks are provided by the DS33Z44. This clock is derived from the REF_CLK. In full duplex DCE mode the clocks are provided by the DS33Z44. The flow control for a full duplex operation is using control frames. If the MAC receives a pause command the Transmitter is disabled for the time specified in the pause command. The pause command has a multicast address 0180-62-00-00-01. The MAC can also initiate a pause control frame by SU.GCR. The duration field in the pause control frame is determined by settings in the MAC Flow Control Register. In full duplex DCE mode the clocks are provided by the DS33Z44. The flow control for a full duplex operation is using control frames. If the MAC receives a pause command the Transmitter is disabled for the time specified in the pause command. The pause command has a multicast address 0180-62-00-00-01. The MAC can also initiate a pause control frame by SU.GCR.The duration field in the pause control frame is determined by settings in the MAC Flow Control Register.
100 Mbps half duplex DCE mode with flow control
100 Mbps full duplex DCE mode with flow control
8.14.2 RMII Mode
RMII interface operates synchronously from the external 50 MHz reference (REF_CLK). Only 8 signals are required. The following figure shows the RMII architecture. Note that DCE mode is not supported for RMII mode and RMII is valid only for full duplex operation. 50 of 181
DS33Z44 Quad Ethernet Mapper
Figure 8-9. RMII Interface
MAC MII to RMII
PHY RMII to MII TX_EN
TX_EN TXD[3:0] TX_ERR TX_CLK
TXD[1:0] TX_EN
TXD[3:0] TX_ERR TX_CLK
CRS RX_CRS RX_DV RX_CRS RX_CLK CRS_DV RXD[1:0] REF_CLK RX_DV RXD[3:0] RX_ER RX_CLK
8.14.3 PHY MII Management Block and MDIO Interface
The MII Management Block allows for the host to control up to 32 PHYs, each with 32 registers. The MII block communicates with the external PHY using 2-wire serial interface composed of MDC (serial clock) and MDIO for data. The MDIO data is valid on the rising edge of the MDC clock. The Frame format for the MII Management Interface is shown Figure 8-10. The read/write control of the MII Management is accomplished through the indirect SU.MACMIIA MII Management Address Register and data is passed through the indirect SU.MACMIID Data Register. These indirect registers are accessed through the MAC Control Registers defined in Table 8-7. The MDC clock is internally generated and runs at 1.67 MHz. Note that the DS33Z44 provides a single MII Management port, and all control registers for this function are located in MAC 1.
51 of 181
DS33Z44 Quad Ethernet Mapper
Figure 8-10. MII Management Frame
Opco de 2 bits 10 Turn Aroun d 2 bits ZZ
Preamble 32 bits READ 111...111
Start 2 bits 01
Phy Adrs 5 bits PHYA[4:0]
Phy Reg 5 bits PHYR[4:0]
Data 16 bits ZZZZZZZZZ
Idle 1 Bit Z
WRITE
111...111
01
01
PHYA[4:0]
PHYR[4:0]
10
PHYD[15:0]
Z
52 of 181
DS33Z44 Quad Ethernet Mapper
8.15 BERT
The BERT can be used for generation and detection of BERT patterns. The BERT is a software programmable test pattern generator and monitor capable of meeting most error performance requirements for digital transmission equipment. The following restrictions are related to the BERT: * * * * The RDEN1-4 and TDEN1-4 are inputs that can be used to "gap" bits. BERT will transmit even when the device is set for X.86 mode and TDENn is configured as an output The normal traffic flow is halted while the BERT is in operation. If the BERT is enabled for a Serial port, it will override the normal connection.
* If there is a connection overridden by the BERT, when BERT operation is terminated the normal operation is restored. The transmit direction generates the programmable test pattern, and inserts the test pattern payload into the data stream. The receive direction extracts the test pattern payload from the receive data stream, and monitors the test pattern payload for the programmable test pattern. BERT Features * * * * PRBS and QRSS pattern - 2 -1, 2 -1 2 -1 and QRSS pattern support Programmable repetitive pattern - The repetitive pattern length and pattern are programmable n (length n = 1 to 32 and pattern = 0 to (2 - 1)). 24-bit error count and 32-bit bit count registers Programmable bit error insertion - Errors can be inserted individually
9 15 23
8.15.1 Receive Data Interface
8.15.1.1 Receive Pattern Detection The Receive BERT receives only the payload data and synchronizes the receive pattern generator to the incoming pattern. The receive pattern generator is a 32-bit shift register that shifts data from the least significant bit (LSB) or bit 1 to the most significant bit (MSB) or bit 32. The input to bit 1 is the feedback. For a PRBS pattern (generating n y polynomial x + x + 1), the feedback is an XOR of bit n and bit y. For a repetitive pattern (length n), the feedback is bit n. The values for n and y are individually programmable (1 to 32). The output of the receive pattern generator is the feedback. If QRSS is enabled, the feedback is an XOR of bits 17 and 20, and the output is forced to one if the next 14 bits are all zeros. QRSS is programmable (on or off). For PRBS and QRSS patterns, the feedback is forced to one if bits 1 through 31 are all zeros. Depending on the type of pattern programmed, pattern detection performs either PRBS synchronization or repetitive pattern synchronization.
8.15.1.2
PRBS Synchronization
PRBS synchronization synchronizes the receive pattern generator to the incoming PRBS or QRSS pattern. The receive pattern generator is synchronized by loading 32 data stream bits into the receive pattern generator, and then checking the next 32 data stream bits. Synchronization is achieved if all 32 bits match the incoming pattern. If at least is incoming bits in the current 64-bit window do not match the receive pattern generator, automatic pattern resynchronization is initiated. Automatic pattern resynchronization can be disabled.
53 of 181
DS33Z44 Quad Ethernet Mapper
Figure 8-11. PRBS Synchronization State Diagram
Sync
6o
err ors
f6 4b
out
w its
bi t sw ith
ors err ith
32
1 bit error
Verify
32 bits loaded
Load
8.15.2 Repetitive Pattern Synchronization
Repetitive pattern synchronization synchronizes the receive pattern generator to the incoming repetitive pattern. The receive pattern generator is synchronized by searching each incoming data stream bit position for the repetitive pattern, and then checking the next 32 data stream bits. Synchronization is achieved if all 32 bits match the incoming pattern. If at least sis incoming bits in the current 64-bit window do not match the receive PRBS pattern generator, automatic pattern resynchronization is initiated. Automatic pattern resynchronization can be disabled.
54 of 181
DS33Z44 Quad Ethernet Mapper
Figure 8-12. Repetitive Pattern Synchronization State Diagram
Sync
6o
err ors
f6 4b
out
w its
bi t sw ith
ors err ith
32
1 bit error
Verify
Pattern Matches
Match
8.15.3 Pattern Monitoring
Pattern monitoring monitors the incoming data stream for Out Of Synchronization (OOS) condition, bit errors, and counts the incoming bits. An OOS condition is declared when the synchronization state machine is not in the "Sync" state. An OOS condition is terminated when the synchronization state machine is in the "Sync" state. Bit errors are determined by comparing the incoming data stream bit to the receive pattern generator output. If they do not match, a bit error is declared, and the bit error and bit counts are incremented. If they match, only the bit count is incremented. The bit count and bit error count are not incremented when an OOS condition exists.
8.15.4 Pattern Generation
Pattern Generation generates the outgoing test pattern, and passes it onto Error Insertion. The transmit pattern generator is a 32-bit shift register that shifts data from the least significant bit (LSB) or bit 1 to the most significant n y bit (MSB) or bit 32. The input to bit 1 is the feedback. For a PRBS pattern (generating polynomial x + x + 1), the feedback is an XOR of bit n and bit y. For a repetitive pattern (length n), the feedback is bit n. The values for n and y are individually programmable. The output of the receive pattern generator is the feedback. If QRSS is enabled, the feedback is an XOR of bits 17 and 20, and the output is forced to one if the next 14 bits are all zeros. QRSS is programmable (on or off). For PRBS and QRSS patterns, the feedback is forced to one if bits 1 through 31 are all zeros. When a new pattern is loaded, the pattern generator is loaded with a pattern value before pattern n generation starts. The pattern value is programmable (0 - 2 - 1). When PRBS and QRSS patterns are generated the seed value is all ones.
8.15.4.1
Error Insertion
Error insertion inserts errors into the outgoing pattern data stream. Errors are inserted one at a time Single bit error insertion can be initiated from the microprocessor interface. If pattern inversion is enabled, the data stream is inverted before the overhead/stuff bits are inserted. Pattern inversion is programmable (on or off). 55 of 181
DS33Z44 Quad Ethernet Mapper 8.15.4.2 Performance Monitoring Update All counters stop counting at their maximum count. A counter register is updated by asserting (low to high transition) the performance monitoring update signal (PMU). During the counter register update process, the performance monitoring status signal (PMS) is de-asserted. The counter register update process consists of loading the counter register with the current count, resetting the counter, forcing the zero count status indication low for one clock cycle, and then asserting PMS. No events shall be missed during an update procedure.
8.16 SERIAL INTERFACES
The Serial Interfaces consist of a serial port and HDLC engine. The signals of the Serial Interface consist of Transmit Data, Transmit Clock, Transmit Enable, Receive Data, Receive Clock, and Receive Enable. The interface can be used to seamlessly connect to T1/E1/T3/E3 framers and LIUs such as the D21458, DS3154, and DS3144. The following table outlines the registers that control the Serial Port.
Table 8-9. Serial Port Functions
REGISTER LI.TSLCR LI.RSLCR FUNCTIONS These two registers are used for defining the settings of the Transmit and Receive Serial Interfaces. The enable signals for the data can be selected to have active high or low polarity. This is shown in LI.RSLCR and LI.TSLCR.
8.17 TRANSMIT PACKET PROCESSOR
The Transmit Packet Processor accepts data from the Transmit FIFO, and performs bit reordering, FCS processing, packet error insertion, stuffing, packet abort sequence insertion, interframe padding, and packet scrambling. The data output from the Transmit Packet Processor to the Transmit Serial Interface is a serial data stream (bit synchronous mode). HDLC processing can be disabled (clear channel enable). Disabling HDLC processing disables FCS processing, packet error insertion, stuffing, packet abort sequence insertion, and interframe padding. Only bit reordering and packet scrambling are not disabled. Bit reordering changes the bit order of each byte. If bit reordering is disabled, the outgoing 8-bit data stream DT[1:8] with DT[1] being the MSB and DT[8] being the LSB is output from the Transmit FIFO with the MSB in TFD[7] (or 15, 23, or 31) and the LSB in TFD[0] (or 8, 16, or 24) of the transmit FIFO data TFD[7:0] 15:8, 23:16, or 31:24). If bit reordering is enabled, the outgoing 8-bit data stream DT[1:8] is output from the Transmit FIFO with the MSB in TFD[0] and the LSB in TFD[7] of the transmit FIFO data TFD[7:0]. In bit synchronous mode, DT [1] is the first bit transmitted. Bit Reordering can be controlled by address pin A0 in Hardware Mode. FCS processing calculates an FCS and appends it to the packet. FCS calculation is a CRC-16 or CRC-32 16 12 5 calculation over the entire packet. The polynomial used for FCS-16 is x + x + x + 1. The polynomial used for 32 26 23 22 16 12 11 10 8 7 5 4 2 FCS-32 is x + x + x + x + x + x + x + x + x + x + x + x + x + x + 1. The FCS is inverted after calculation. The FCS type is programmable. If FCS append is enabled, the calculated FCS is appended to the packet. If FCS append is disabled, the packet is transmitted without an FCS. The FCS append mode is programmable. If packet processing is disabled, FCS processing is not performed. Packet error insertion inserts errors into the FCS bytes. A single FCS bit is corrupted in each errored packet. The FCS bit corrupted is changed from errored packet to errored packet. Error insertion can be controlled by a register or by the manual error insertion input (LI.TMEI.TMEI). The error insertion initiation type (register or input) is programmable. If a register controls error insertion, the number and frequency of the errors are programmable. If FCS append is disabled, packet error insertion will not be performed. If packet processing is disabled, packet error insertion is not performed. Stuffing inserts control data into the packet to prevent packet data from mimicking flags. A packet start indication is received, and stuffing is performed until, a packet end indication is received. Bit stuffing consists of inserting a '0' directly following any five contiguous '1's. If packet processing is disabled, stuffing is not performed.
56 of 181
DS33Z44 Quad Ethernet Mapper There is at least one flag plus a programmable number of additional flags between packets. The interframe fill can be flags or all '1's followed by a start flag. If the interframe fill is all '1's, the number of '1's between the end and start flags does not need to be an integer number of bytes, however, there must be at least 15 consecutive '1's between the end and start flags. The interframe padding type is programmable. If packet processing is disabled, interframe padding is not performed. Packet abort insertion inserts a packet abort sequences as necessary. If a packet abort indication is detected, a packet abort sequence is inserted and interframe padding is done until a packet start flag is detected. The abort sequence is FFh. If packet processing is disabled, packet abort insertion is not performed. The packet scrambler is a x + 1 scrambler that scrambles the entire packet data stream. The packet scrambler runs continuously, and is never reset. In bit synchronous mode, scrambling is performed one bit at a time. In byte synchronous mode, scrambling is performed 8 bits at a time. Packet scrambling is programmable. Note in Hardware Mode, the scrambling is controlled by A1/SD. Once all packet processing has been completed serial data stream is passed on to the Transmit Serial Interface.
43
8.18 RECEIVE PACKET PROCESSOR
The Receive Packet Processor accepts data from the Receive Serial Interface performs packet descrambling, packet delineation, interframe fill filtering, packet abort detection, destuffing, packet size checking, FCS error monitoring, FCS byte extraction, and bit reordering. The data coming from the Receive Serial Interface is a serial data stream. Packet processing can be disabled (clear channel enable). Disabling packet processing disables packet delineation, interframe fill filtering, packet abort detection, destuffing, packet size checking, FCS error monitoring, and FCS byte extraction. Only packet descrambling and bit reordering are not disabled. The packet descrambler is a self-synchronous x + 1 descrambler that descrambles the entire packet data stream. Packet descrambling is programmable. The descrambler runs continuously, and is never reset. The descrambling is performed one bit at a time. Packet descrambling is programmable. If packet processing is disabled, the serial data stream is demultiplexed in to an 8-bit data stream before being passed on. Note in Hardware Mode, the scrambling is controlled by A1/SD. If packet processing is disabled, a packet boundary is arbitrarily chosen and the data is divided into "packets" of programmable size (dependent on maximum packet size setting). These packets are then passed on to bit reordering with packet start and packet end indications. Data then bypasses packet delineation, interframe fill filtering, packet abort detection, destuffing, packet size checking, FCS error monitoring, and FCS byte extraction. Packet delineation determines the packet boundary by identifying a packet start or end flag. Each time slot is checked for a flag sequence (7Eh). Once a flag is found, it is identified as a start/end flag and the packet boundary is set. The flag check is performed one bit at a time. If packet processing is disabled, packet delineation is not performed. Interframe fill filtering removes the interframe fill between packets. When a packet end flag is detected, all data is discarded until a packet start flag is detected. The interframe fill can be flags or all '1's. The number of '1's between flags does not need to be an integer number of bytes, and if at least 7 '1's are detected in the first 16 bits after a flag, all data after the flag is discarded until a start flag is detected. There may be only one flag between packets. When the interframe fill is flags, the flags may have a shared zero (011111101111110). If there is less than 16 bits between two flags, the data is discarded. If packet processing is disabled, interframe fill filtering is not performed. Packet abort detection searches for a packet abort sequence. Between a packet start flag and a packet end flag, if an abort sequence is detected, the packet is marked with an abort indication, the aborted packet count is incremented, and all subsequent data is discarded until a packet start flag is detected. The abort sequence is seven consecutive ones. If packet processing is disabled, packet abort detection is not performed. Destuffing removes the extra data inserted to prevent data from mimicking a flag or an abort sequence. A start flag is detected, a packet start is set, the flag is discarded, destuffing is performed until an end flag is detected, a packet end is set, and the flag is discarded. In bit synchronous mode, bit destuffing is performed. Bit destuffing consists of discarding any '0' that directly follows five contiguous '1's. After destuffing is completed, the serial bit stream is demultiplexed into an 8-bit parallel data stream and passed on with packet start, packet end, and packet abort indications. If there is less than eight bits in the last byte, an invalid packet flag is raised, the packet is tagged with an abort indication, and the packet size violation count is incremented. If packet processing is disabled, destuffing is not performed. 57 of 181
43
DS33Z44 Quad Ethernet Mapper Packet size checking checks each packet for a programmable maximum and programmable minimum size. As the packet data comes in, the total number of bytes is counted. If the packet length is below the minimum size limit, the packet is marked with an aborted indication, and the packet size violation count is incremented. If the packet length is above the maximum size limit, the packet is marked with an aborted indication, the packet size violation count is incremented, and all packet data is discarded until a packet start is received. The minimum and maximum lengths include the FCS bytes, and are determined after destuffing has occurred. If packet processing is disabled, packet size checking is not performed. FCS error monitoring checks the FCS and aborts errored packets. If an FCS error is detected, the FCS errored packet count is incremented and the packet is marked with an aborted indication. If an FCS error is not detected, the receive packet count is incremented. The FCS type (16-bit or 32-bit) is programmable. If FCS processing or packet processing is disabled, FCS error monitoring is not performed. FCS byte extraction discards the FCS bytes. If FCS extraction is enabled, the FCS bytes are extracted from the packet and discarded. If FCS extraction is disabled, the FCS bytes are stored in the receive FIFO with the packet. If FCS processing or packet processing is disabled, FCS byte extraction is not performed. Bit reordering changes the bit order of each byte. If bit reordering is disabled, the incoming 8-bit data stream DT[1:8] with DT[1] being the MSB and DT[8] being the LSB is output to the Receive FIFO with the MSB in RFD[7] (or 15, 23, or 31) and the LSB in RFD[0] (or 8, 16, or 24) of the receive FIFO data RFD[7:0] (or 15:8, 23:16, or 31:24). If bit reordering is enabled, the incoming 8-bit data stream DT[1:8] is output to the Receive FIFO with the MSB in RFD[0] and the LSB in RFD[7] of the receive FIFO data RFD[7:0]. DT[1] is the first bit received from the incoming data stream. Bit reordering can be controlled by pin A0 in Hardware Mode. Once all of the packet processing has been completed, the 8-bit parallel data stream is demultiplexed into a 32-bit parallel data stream. The Receive FIFO data is passed on to the Receive FIFO with packet start, packet end, packet abort, and modulus indications. At a packet end, the 32-bit word may contain 1, 2, 3, or 4 bytes of data depending on the number of bytes in the packet. The modulus indications indicate the number of bytes in the last data word of the packet.
58 of 181
DS33Z44 Quad Ethernet Mapper
8.19 X.86 ENCODING AND DECODING
X.86 protocol provides a method for encapsulating Ethernet Frame onto LAPS. LAPS provides a HDLC-type framing structure for encapsulation of Ethernet frames, but does not inflict dynamic bandwidth expansion as HDLC does. LAPS encapsulated frames can be used to send data onto a SONET/SDH network. The DS33Z44 expects a byte synchronization signal to provide the byte boundary for the X.86 receiver. This is provided by the RBSYN pin. The functional timing is shown in Figure 10-4. The X.86 transmitter provides a byte boundary indicator with the signal TBSYN. The functional timing is shown in Figure 10-3.
Figure 8-13. LAPS Encoding of MAC Frames Concept
IEEE 802.3 MAC Frame
LAPS
Rate Adaption
SDH
59 of 181
DS33Z44 Quad Ethernet Mapper
Figure 8-14. X.86 Encapsulation of the MAC Field
Number of Bytes Flag(0x7E) Address(0x04) Control(0x03) 1st Octect of SAPI(0xfe) 2nd Octect of SAPI(0x01) Destination Adrs(DA) Source Adrs(SA) Length/Type MAC Client Data 1 1 1 1 1 6 6 2 46-1500
PAD FCS for MAC FCS for LAPS Flag(0x7E) 4 4
MSB
LSB
The DS33Z44 will encode the MAC Frame with the LAPS encapsulation on a complete serial stream if configured for X.86 mode in the register LI.TX86E. The DS33Z44 provides the following functions: * * * Control Registers for Address, SAPI, Destination Address, Source Address 32 bit FCS enabled 43 Programmable X +1 scrambling
The sequence of processing performed by the receiver is as follows: * * * * * * * Programmable octets X +1 descrambling Detect the Start Flag (7E) Remove Rate adaptation octets 7d, dd. Perform transparency-processing 7d, 5e is converted to 7e and 7d, 5d is converted to 7d Check for a valid Address, Control and SAPI fields (LI.TRX86A to LI.TRX86SAPIL) Perform FCS checking Detect the closing flag
43
60 of 181
DS33Z44 Quad Ethernet Mapper The X86 received frame is aborted if: * * * * * If 7d,7E is detected. This is an abort packet sequence in X.86 Invalid FCS is detected The received frame has less than 6 octets Control, SAPI and address field are mismatched to the programmed value Octet 7d and octet other than 5d, 5e, 7e, or dd is detected
For the transmitter if X.86 is enabled the sequence of processing is as follows: * * * * * Construct frame including start flag SAPI, Control and MAC frame Calculate FCS Perform transparency processing - 7E is translated to 7D5E, 7D is translated to 7D5D Append the end flag(7E) 43 Scramble the sequence X +1
Note that the Serial transmit and receive registers apply to the X.86 implementations with specific exceptions. The exceptions are outlined in the Serial Interface transmit and receive register sections.
61 of 181
DS33Z44 Quad Ethernet Mapper
8.20 COMMITTED INFORMATION RATE CONTROLLER
The DS33Z44 provides a CIR provisioning facility. The CIR can be used restricts the transport of received MAC data to a programmable rate. This is shown in Figure 8-15. The CIR will restrict the data flow from the Receive MAC to Transmit HDLC. This can be used for provisioning and billing functions towards the WAN. The user must set the CIR register to control the amount of data throughput from the MAC to HDLC transmit. The CIR register is in granularity of 500 Kbit/s with a range of 0 to 52 Mbit/s. The operation of the CIR is as follows: * * The CIR block counts the credits that are accumulated at the end of every 125 ms If data is received and stored in the SDRAM to be sent to the Serial Interface, the interface will request the data if there is a positive credit balance. If the credit balance is negative, transmit interface does not request data New credit balance is calculated credit balance = old credit balance - frame size in bytes after the frame is sent The credit balance is incremented every 125 ms by CIR/8 Credit balances not used in 250 ms are reset to 0 The maximum value of CIR can not exceed the transmit line rate If the data rate received from the Ethernet interface is higher than the CIR, the receive queue buffers will fill and the high threshold water mark will invoke flow control to reduce the incoming traffic rate. The CIR function is only available for software mode of operation only CIR function is only available in data received at the Ethernet Interface to be sent to WAN. There is not CIR functionality for data arriving from the WAN to be sent to the Ethernet Interface Negative credits are not allowed, if there is not a credit balance, no frames are sent until there is a credit balance again.
* * * * * * * *
62 of 181
DS33Z44 Quad Ethernet Mapper
Figure 8-15. CIR in the WAN Transmit Path
Eprom
Line 1
HDLC + Serial Interface
CIR
MAC RMII MII To and From SDRAM
Line 2
Line 3
Cross Connect
HDLC + Serial Interface
CIR Arbiter
MAC RMII MII
Line 4
HDLC + Serial Interface
CIR
MAC RMII MII
HDLC + Serial Interface
CIR
MAC RMII MII
SDRAM Interface
Buffer Dev
SYSCLKI
100 Mhz Oscillator
SDRAM
63 of 181
DS33Z44 Quad Ethernet Mapper
8.21 HARDWARE MODE
The hardware mode settings are provided for users who do not want to utilize a microprocessor or EEPROM. The hardware mode default queue sizes and watermark thresholds can be selected for various line rates using the MODEC pins. The user can control the DTE/DCE, RMII/MII and Half Duplex/Full Duplex and setting with hardware pins DCEDTES, RMIIMIIS, and FULLDS1-4 selection. The flow control (pause and back pressure) can be configured with the AFCS1-4 hardware pins. The user can also control bit order, data scrambling, and X.86 encapsulation using the A0, A1, and A2 pins, respectively. The DS33Z44 has three different default hardware settings. This is outlined in the following tables. The typical applications for each of the Hardware Modes are outlined in following tables. Note that in the hardware only mode the following restrictions apply: * * * * * * * * * The ports are powered up and ready to transmit/receive after reset BERT functionality is not supported in Hardware Mode Queue size and watermarks are fixed Receive and Transmit HDLC FCS are 16 bits Transmit Packets are resent if errors occur, Receive Packets are rejected if errors occur Transmission of errored packets is not supported in hardware mode MII, RMII, Full and Half Duplex, Automatic flow control, DTE, DCE, 100 or 10 Mbps can be selected through Hardware Pins TDENn and RDENn are not supported and should be tied high CIR function is not supported in Hardware Mode
Table 8-10. Hardware Modes and Applications
MODEC PIN SETTINGS 00 APPLICATIONS Serial Interfaces 1 to 4 connected to T1/E1 Lines or T3/E3 and Ethernet Interfaces 1 to 4 set to 10 Mbit/s or 100 Mbit/s LAN MII or RMII. All transmitters and receivers are enabled for communication. 01 Serial Interfaces 1 to 3 connected to T1/E1 Lines and Serial Interface 4 to T3/E3 and Ethernet Interfaces 1 to 4 set to 10 Mbit/s or 100 Mbit/s LAN MII or RMII. All transmitters and receivers are enabled for communication. Serial Interfaces 1 and 2 are connected to T3/E3 lines and Serial Interfaces 3 and 4 are connected to T1/E1 Lines and Ethernet Interfaces 1 to 4 Setup to 10 Mbit/s or 100 Mbit/s LAN MII or RMII. All transmitters and receivers are enabled for communication.
10
64 of 181
DS33Z44 Quad Ethernet Mapper The specific registers and detailed functions for each of the hardware modes are detailed in the following tables.
Table 8-11. Specific Functional Default Values for Hardware Mode
FUNCTIONAL BLOCK REGISTER REFERENCE DEFAULT VALUE IN HARDWARE MODE DESCRIPTION
Global
Connections Between Serial Ports and Ethernet Interfaces
GL.CON1 GL.CON2 GL.CON3 GL.CON4
0000 0001b 0000 0010b 0000 0011b 0000 0100b
Connection established for Serial 1 to Ethernet 1, Serial 2 to Ethernet 2, Serial 3 to Ethernet 3, and Serial 4 to Ethernet 4.
Serial Data
Transmit Serial Interface Configuration
LI.TSLCR
0000 0000b
Transmit Data enable is not supported and should be tied high. The user must provide gapped clocks to mask bits if needed. The Transmit Serial data will output on the rising edge of TCLKI1-4. In default hardware mode the Serial Interface Transmitter is powered up and ready to go. FCS is 16 bits for HDLC Transmitter Transmit inter frame gap is one byte. The value is 7E. Receive HDLC FCS is set to 16 bits. Receive scrambling and bit ordering controlled by hardware pins The receive maximum packet length is set to 2016 bytes not including the HDLC FCS. Any packets greater than 2016 bytes are rejected.
Serial Interface Reset and Power-Down Transmit FCS Transmit Interfame Gap Receive FCS Receive Maximum Packet Length
LI.RSTPD LI.TPPCL LI.TIFGC LI.RPPCL LI.RMPSC
0000 0000b 0001 0000* 0000 0001b 0001 0000b* 2016 bytes
Receive Serial Port Configuration Ethernet Interface Reset and Power-Down Transmit Packet Resend Criteria
LI.RSLCR
0000 0000b
Receive RDENn enable will not be supported and should be tied high. The Received data is sampled on the falling edge and gapped clock is supported. The MAC is powered up and ready to go Any error: Jabber timeout, Loss of carrier, Excessive deferral, Late collision, Excessive collisions, Under run, collision, deferred, heartbeat fail will result in resending of packets Received packets are rejected if any receive errors occur The maximum receiver packet size is 2016 bytes including the MAC FCS. Any packet larger that 2016 is rejected
SU.RSTPD SU.TFRC
0000 0000b* 0000 0000b
Receive Packet Rejection Control Receiver Maximum Size
SU.RFRC SU.RMFSR
0000 0000b 0111 1110b
Ethernet
MAC Control Register
SU.MACCR
1001 0000 0000 0100 0000 0000 0000 0000b*
Duplex mode(bit 20) is determined by the FULLDS pin (MSB to LSB)
MAC Flow Control Register
SU.MACFCR
0000 0001 0100 0000 0000 0000 0000 0000b*
Flow control is determined by the AFCSn pin. Pause Timer = 140 Slots (MSB to LSB)
65 of 181
DS33Z44 Quad Ethernet Mapper
DEFAULT VALUE IN HARDWARE MODE
FUNCTIONAL BLOCK
REGISTER REFERENCE
DESCRIPTION
Queue Size and Thresholds
Connection Transmit Queue Size
AR.TQSC1-4 AR.TQSC1-3 AR.TQSC4 AR.TQSC1-2 AR.TQSC3-4
640 packets 512 packets 640 packets 768 packets 640 packets 384 packets 384 packets 384 packets 192 packets* 192 packets* 192 packets* 1408 packets* 1536 packets* 1408 packets* 1280 packets* 1408 packets* 480 packets* 512 packets* 384 packets* 480 packets* 960 packets* 1024 packets* 768 packets* 960 packets*
Modec[1:0] = 00 Modec[1:0] = 01 Modec[1:0] = 01 Modec[1:0] = 10 Modec[1:0] = 10 Modec[1:0] = 00 Modec[1:0] = 01 Modec[1:0] = 01 Modec[1:0] = 00 Modec[1:0] = 01 Modec[1:0] = 10 Modec[1:0] = 00 Modec[1:0] = 01 Modec[1:0] = 01 Modec[1:0] = 10 Modec[1:0] = 10 Modec[1:0] = 00 Modec[1:0] = 01 Modec[1:0] = 10 Modec[1:0] = 10 Modec[1:0] = 00 Modec[1:0] = 01 Modec[1:0] = 10 Modec[1:0] = 10
Transmit Queue High Threshold
LI.TQHT (ports 1-4) LI.TQHT (ports 1-4) LI.TQHT (ports 1-4)
Transmit Queue Low Threshold
LI.TQLT (ports 1-4) LI.TQLT (ports 1-4) LI.TQLT (ports 1-4)
Receive Queue Size
AR.RQSC1-4 AR.RQSC1-3 AR.RQSC4 AR.RQSC1-2 AR.RQSC3-4
Receive Queue Low Threshold
SU.RQLT (ports 1-4) SU.RQLT (ports 1-4) SU.RQLT (ports 1-2) SU.RQLT (ports 3-4)
Receive Queue High Threshold
SU.RQHT (ports 1-4) SU.RQHT (ports 1-4) SU.RQHT (ports 1-2) SU.RQHT (ports 3-4)
* The default values for these registers are different than in the Software mode. Note: Each "packet" above is 2048 bytes.
66 of 181
DS33Z44 Quad Ethernet Mapper
Table 8-12. Hardware Mode Pins
PIN HWMODE MODEC[1:0] RMIIMIIS DCEDTES FULLDSn A2/X86ED A1/SCD A0/BREO HARDWARE MODE FUNCTION 0 = Hardware Mode disabled. 1 = Hardware Mode enabled. Select the hardware mode default settings. 0 = MII Operation. Applies to all four ports. 1 = RMII operation. Applies to all four ports. 1 = DCE Operation 0 = DTE Operation 0 = Half Duplex Mode. 1 = Full Duplex Mode. 0 = X.86 mode is disabled. 1 = X.86 mode is enabled for transmit and receive. 43 0 = X +1 scrambling/descrambling is enabled. 43 1 = X +1 scrambling/descrambling is disabled. 0 = HDLC transmit and receive bits are normal. The MSB is transmitted and received first. 1 = HDLC transmit and receive bits are reversed. The LSB is transmitted and received first.
67 of 181
DS33Z44 Quad Ethernet Mapper
9 DEVICE REGISTERS
Ten address lines are used to address the register space. Table 9-1 shows the register map for the DS33Z44. The addressable range for the device is 0000h to 08FFh. Each Register Section is 64 bytes deep. Global Registers are preserved for software compatibility with multiport devices. The Serial Interface (Line) Registers are used to configure the serial port and the associated transport protocol. The Ethernet Interface (Subscriber) registers are used to control and observe each of the Ethernet ports. The registers associated with the MAC must be configured through indirect register write /read access due to the architecture of the device. When writing to a register input values for unused bits and registers (those designated with "-") should be zero unless specifically noted otherwise, as these bits and registers are reserved. When a register is read from, the values of the unused bits and registers should be ignored. A latched status bit is set when an event happens and is cleared when read. The register details are provided in the following tables.
Table 9-1. Register Address Map
GLOBAL REGISTERS 0000h - 003Fh Port 1 Port 2 Port 3 Port 4 ARBITER 0040h - 007Fh BERT 0080h - 00BFh SERIAL INTERFACE 00C0h - 013Fh 0180h - 01FFh 0240h - 02BFh 0300h - 037Fh ETHERNET INTERFACE 0140h - 017Fh 0200h - 023Fh 02C0h - 02FFh 0380h - 03BFh
Reserved address space: 03C0h-07FFh
68 of 181
DS33Z44 Quad Ethernet Mapper
9.1
9.1.1
Register Bit Maps
Global Register Bit Map
Table 9-2. Global Register Bit Map
ADDR Name 000h GL.IDRL 001h 002h 003h 004h 005h 006h 007h 008h 009h 00Ah 00Bh 00Ch 00Dh 00Eh 00Fh 010h 011h 012h 013h 014h 015h 020h 021h
GL.IDRH GL.CR1 GL.BLR GL.RTCAL GL.SRCALS GL.LIE GL.LIS GL.SIE GL.SIS GL.TRQIE GL.TRQIS GL.BIE GL.BIS GL.CON1 GL.CON2 GL.CON3 GL.CON4 GL.C1QPR GL.C2QPR GL.C3QPR GL.C4QPR GL.BISTEN GL.BISTPF
BIT 7
ID07 ID15 RLCALS4 LIN4TIE LIN4TIS TQ4IE TQ4IS -
BIT 6
ID06 ID14 RLCALS3 LIN3TIE LIN3TIS TQ3IE TQ3IS -
BIT 5
ID05 ID13 RLCALS2 LIN2TIE LIN2TIS TQ2IE TQ2IS -
BIT 4
ID04 ID12 RLCALS1 LIN1TIE LIN1TIS TQ1IE TQ1IS -
BIT 3
ID03 ID11 GL.BLC4 TLCALS4 LIN4RIE LIN4RIS SUB4IE SUB4IS RQ4IE RQ4IS C1MRPRR C2MRPRR C3MRPRR C4MRPRR -
BIT 2
ID02 ID10 REF_CLKO GL.BLC3 TLCALS3 LIN3RIE LIN3RIS SUB3IE SUB3IS RQ3IE RQ3IS LINE1[2] LINE2[2] LINE3[2] LINE4[2] C1HWPRR C2HWPRR C3HWPRR C4HWPRR -
BIT 1
ID01 ID09 INTM GL.BLC2 TLCALS2 REFCLKS LIN2RIE LIN2RIS SUB2IE SUB2IS RQ2IE RQ2IS LINE1[1] LINE2[1] LINE3[1] LINE4[1] C1MHPR C2MHPR C3MHPR C4MHPR BISTDN
BIT 0
ID00 ID08 RST GL.BLC1 TLCALS1 SYSCLS LIN1RIE LIN1RIS SUB1IE SUB1IS RQ1IE RQ1IS BIE BIS LINE1[0] LINE2[0] LINE3[0] LINE4[0] C1HRPR C2HRPR C3HRPR C4HRPR BISTE BISTPF
1Fh-3Fh are reserved.
69 of 181
DS33Z44 Quad Ethernet Mapper
9.1.2
Arbiter Register Bit Map
Table 9-3 contains the Arbiter registers of the DS33Z44. Bits that are reserved are noted with a single dash "-". All registers not listed are reserved and should be initialized with a value of 00h for proper operation.
Table 9-3. Arbiter Register Bit Map
ADDR NAME 040h AR.RQSC1 041h AR.TQSC1 042h AR.RQSC2 043h AR.TQSC2 044h AR.RQSC3 045h AR.TQSC3 046h AR.RQSC4 047h AR.TQSC4 BIT 7
RQSC1[7] TQSC1[7] RQSC2[7] TQSC2[7] RQSC3[7] TQSC3[7] RQSC4[7] TQSC4[7]
BIT 6
RQSC1[6] TQSC1[6] RQSC2[6] TQSC2[6] RQSC3[6] TQSC3[6] RQSC4[6] TQSC4[6]
BIT 5
RQSC1[5] TQSC1[5] RQSC2[5] TQSC2[5] RQSC3[5] TQSC3[5] RQSC4[5] TQSC4[5]
BIT 4
RQSC1[4] TQSC1[4] RQSC2[4] TQSC2[4] RQSC3[4] TQSC3[4] RQSC4[4] TQSC4[4]
BIT 3
RQSC1[3] TQSC1[3] RQSC2[3] TQSC2[3] RQSC3[3] TQSC3[3] RQSC4[3] TQSC4[3]
BIT 2
RQSC1[2] TQSC1[2] RQSC2[2] TQSC2[2] RQSC3[2] TQSC3[2] RQSC4[2] TQSC4[2]
BIT 1
RQSC1[1] TQSC1[1] RQSC2[1] TQSC2[1] RQSC3[1] TQSC3[1] RQSC4[1] TQSC4[1]
BIT 0
RQSC1[0] TQSC1[0] RQSC2[0] TQSC2[0] RQSC3[0] TQSC3[0] RQSC4[0] TQSC4[0]
9.1.3
BERT Register Bit Map
Table 9-4. BERT Register Bit Map
ADDR 080h 081h 082h 083h 084h 085h 086h 087h 088h 08Ah 08Bh 08Ch 08Dh 08Eh 08Fh 090h 091h 092h 093h 094h 095h 096h 097h 098h 099h 09Ah 09Bh 09Ch 09Dh 09Eh 09Fh NAME BCR Reserved BPCLR BPCHR BSPB0R BSPB1R BSPB2R BSPB3R TEICR Reserved Reserved BSR Reserved BSRL Reserved BSRIE Reserved Reserved Reserved RBECB0R RBECB1R RBECB2R Reserved RBCB0 RBCB1 RBCB2 RBCB3 Reserved Reserved Reserved Reserved BIT 7 BSP7 BSP15 BSP23 BSP31 BEC7 BEC15 BEC23 BC7 BC15 BC23 BC31 BIT 6 PMU QRSS BSP6 BSP14 BSP22 BSP30 BEC6 BEC14 BEC22 BC6 BC14 BC22 BC30 BIT 5 RNPL PTS BSP5 BSP13 BSP21 BSP29 TIER2 BEC5 BEC13 BEC21 BC5 BC13 BC21 BC29 BIT 4 RPIC PLF4 PTF4 BSP4 BSP12 BSP20 BSP28 TIER1 BEC4 BEC12 BEC20 BC4 BC12 BC20 BC28 BIT 3 MPR PLF3 PTF3 BSP3 BSP11 BSP19 BSP27 TIER0 PMS PMSL PMSIE BEC3 BEC11 BEC19 BC3 BC11 BC19 BC27 BIT 2 APRD PLF2 PTF2 BSP2 BSP10 BSP18 BSP26 BEI BEL BEIE BEC2 BEC10 BEC18 BC2 BC10 BC18 BC26 BIT 1 TNPL PLF1 PTF1 BSP1 BSP9 BSP17 BSP25 TSEI BEC BECL BECIE BEC1 BEC9 BEC17 BC1 BC9 BC17 BC25 BIT 0 TPIC PLF0 PTF0 BSP0 BSP8 BSP16 BSP24 OOS OOSL OOSIE BEC0 BEC8 BEC16 BC0 BC8 BC16 BC24 -
70 of 181
DS33Z44 Quad Ethernet Mapper
9.1.4
Serial Interface Register Bit Map
Table 9-5. Serial Interface Register Bit Map
ADDR 0C0h 0C1h 0C2h 0C3h 0C4h 0C5h 0C6h 0C7h 0C8h 0C9h 0CAh 0CBh 0CCh 0CDh 0CEh 0CFh 0D0h 0D1h 0D2h 0D3h 0D4h 0D5h 0D6h 0D7h 0D8h 0D9h 0DAh 0DBh 0DCh 0DDh 100h 101h 102h 103h 104h 105h 106h 107h 108h 109h 10Ah 10Ch 10Dh 10Eh 10Fh 110h 111h NAME LI.TSLCR LI.RSTPD LI.LPBK Reserved LI.TPPCL LI.TIFGC LI.TEPLC LI.TEPHC LI.TPPSR LI.TPPSRL LI.TPPSRIE Reserved LI.TPCR0 LI.TPCR1 LI.TPCR2 Reserved LI.TBCR0 LI.TBCR1 LI.TBCR2 LI.TBCR3 LI.TMEI Reserved LI.THPMUU LI.THPMUS LI.TX86EDE LI.TRX86A LI.TRX8C BIT 7 TIFG7 TPEN7 MEIMS TPC7 TPC15 TPC23 TBC7 TBC15 TBC23 TBC31 BIT 6 TIFG6 TPEN6 TPER6 TPC6 TPC14 TPC22 TBC6 TBC14 TBC22 TBC30 BIT 5 TFAD TIFG5 TPEN5 TPER5 TPC5 TPC13 TPC21 TBC5 TBC13 TBC21 TBC29 BIT 4 TF16 TIFG4 TPEN4 TPER4 TPC4 TPC12 TPC20 TBC4 TBC12 TBC20 TBC28 BIT 3 TIFV TIFG3 TPEN3 TPER3 TPC3 TPC11 TPC19 TBC3 TBC11 TBC19 TBC27 BIT 2 TSD TIFG2 TPEN2 TPER2 TPC2 TPC10 TPC18 TBC2 TBC10 TBC18 TBC26 BIT 1 RESET TBRE TIFG1 TPEN1 TPER1 TPC1 TPC9 TPC17 TBC1 TBC9 TBC17 TBC25 BIT 0 TDENPLT QLP TIFG0 TPEN0 TPER0 TEPF TEPFL TEPFIE TPC0 TPC8 TPC16 TBC0 TBC8 TBC16 TBC24 TMEI TPMUU TPMUS X86ED
X86TRA7 X86TRA6 X86TRA5 X86TRA4 X86TRA3 X86TRA2 X86TRA1 X86TRA0 X86TRC7 X86TRC6 X86TRC5 X86TRC4 X86TRC3 X86TRC2 X86TRC1 X86TRC0
TRSAPIH6 TRSAPIL6 TRSAPIH5 TRSAPIL5 TRSAPIH4 TRSAPIL4 TRSAPIH3 TRSAPIL3 TRSAPIH2 TRSAPIL2 TRSAPIH1 TRSAPIL1 TRSAPIH0 TRSAPIL0
LI.TRX86SAPIH TRSAPIH7 LI.TRX86SAPIL TRSAPIL7
LI.CIR LI.RSLCR LI.RPPCL LI.RMPSCL LI.RMPSCH LI.RPPSR LI.RPPSRL LI.RPPSRIE Reserved LI.RPCB0 LI.RPCB1 LI.RPCB2 LI.RFPCB0 LI.RFPCB1 LI.RFPCB2 Reserved LI.RAPCB0 LI.RAPCB1
CIRE RMX7 RMX15 REPL REPIE RPC7 RPC15 RPC23 RFPC7 RFPC15 RFPC23 RAPC7 RAPC15
CIR6 RMX6 RMX14 RAPL RAPIE RPC6 RPC14 RPC22 RFPC6 RFPC14 RFPC22 RAPC6 RAPC14
CIR5 RFPD RMX5 RMX13 RIPDL RIPDIE RPC5 RPC13 RPC21 RFPC5 RFPC13 RFPC21 RAPC5 RAPC13
CIR4 RF16 RMX4 RMX12 RSPDL RSPDIE RPC4 RPC12 RPC20 RFPC4 RFPC12 RFPC20 RAPC4 RAPC12
CIR3 RFED RMX3 RMX11 RLPDL RLPDIE RPC3 RPC11 RPC19 RFPC3 RFPC11 RFPC19 RAPC3 RAPC11
CIR2 RDD RMX2 RMX10 REPC REPCL REPCIE RPC2 RPC10 RPC18 RFPC2 RFPC10 RFPC18 RAPC2 RAPC10
CIR1 CIR0 RDENPLT RBRE RCCE RMX1 RMX0 RMX9 RMX8 RAPC RSPC RAPCL RSPCL RAPCIE RSPCIE RPC1 RPC09 RPC17 RFPC1 RFPC9 RFPC17 RAPC1 RAPC9 RPC0 RPC08 RPC16 RFPC0 RFPC8 RFPC16 RAPC0 RAPC8
71 of 181
DS33Z44 Quad Ethernet Mapper ADDR 112h 113h 114h 115h 116h 118h 119h 11Ah 11Bh 11Ch 11Dh 11Eh 11Fh 120h 121h 122h 123h 124h 125h 126h 127h NAME LI.RAPCB2 Reserved LI.RSPCB0 LI.RSPCB1 LI.RSPCB2 LI.RBC0 LI.RBC1 LI.RBC2 LI.RBC3 LI.RAC0 LI.RAC1 LI.RAC2 LI.RAC3 LI.RHPMUU LI.RHPMUS LI.RX86S LI.RX86LSIE LI.TQLT LI.TQHT LI.TQTIE LI.TQCTLS BIT 7 RAPC23 RSPC7 RSPC15 RSPC23 RBC7 RBC15 RBC23 RBC31 REBC7 REBC15 REBC23 REBC31 TQLT7 TQHT7 BIT 6 RAPC22 RSPC6 RSPC14 RSPC22 RBC6 RBC14 RBC22 RBC30 REBC6 REBC14 REBC22 REBC30 TQLT6 TQHT6 BIT 5 RAPC21 RSPC5 RSPC13 RSPC21 RBC5 RBC13 RBC21 RBC29 REBC5 REBC13 REBC21 REBC29 TQLT5 TQHT5 BIT 4 RAPC20 RSPC4 RSPC12 RSPC20 RBC4 RBC12 RBC20 RBC28 REBC4 REBC12 REBC20 REBC28 TQLT4 TQHT4 BIT 3 RAPC19 RSPC3 RSPC11 RSPC19 RBC3 RBC11 RBC19 RBC27 REBC3 REBC11 REBC19 REBC27 BIT 2 RAPC18 RSPC2 RSPC10 RSPC18 RBC2 RBC10 RBC18 RBC26 REBC2 REBC10 REBC18 REBC26 BIT 1 RAPC17 RSPC1 RSPC9 RSPC17 RBC1 RBC9 RBC17 RBC25 REBC1 REBC9 REBC17 REBC25 BIT 0 RAPC16 RSPC0 RSPC8 RSPC16 RBC0 RBC8 RBC16 RBC24 REBC0 REBC8 REBC16 REBC24 RPMUU RPMUUS
SAPIHNE SAPILNE
SAPINE01IM SAPINEFEIM
CNE ANE CNE3LIM ANE4IM TQLT3 TQLT2 TQLT1 TQLT0 TQHT3 TQHT2 TQHT1 TQHT0 TFOVFIE TQOVFIE TQHTIE TQLTIE TFOVFLS TQOVFLS TQHTLS TQLTLS
0DEh-0FFh and 128h-13Fh are reserved. Note: the address locations in the above table are for Serial Interface 1. The address locations for Serial Interfaces 2 through 4 can be found with the following formula: Address for Port n = Address for Serial Port 1 + [0C0h x (n-1)]; for n = 1 to 4.
72 of 181
DS33Z44 Quad Ethernet Mapper
9.1.5
Ethernet Interface Register Bit Map
Table 9-6. Ethernet Interface Register Bit Map
ADDR 140h 141h 142h 143h 144h 145h 146h 147h 148h 149h 14Ah 14Bh 14Ch 14Eh 14Fh 150h 151h 152h 153h 154h 155h 156h 157h 158h 159h 15Ah 15Bh 15Ch 15Dh 15Eh NAME
SU.MACRADL SU.MACRADH SU.MACRD0 SU.MACRD1 SU.MACRD2 SU.MACRD3 SU.MACWD0 SU.MACWD1 SU.MACWD2 SU.MACWD3 SU.MACAWL SU.MACAWH SU.MACRWC SU.RSTPD SU.LPBK SU.GCR SU.TFRC SU.TFSL SU.TFSH SU.RFSB0 SU.RFSB1 SU.RFSB2 SU.RFSB3 SU.RMFSRL SU.RMFSRH SU.RQLT SU.RQHT SU.QRIE SU.QCRLS SU.RFRC
BIT 7
MACRA7 MACRA15 MACRD7 MACRD15 MACRD23 MACRD31 MACWD7 MACWD15 MACWD23 MACD31 MACAW 7 MACAW 15 UR PR FL7 RF MF RMPS7 RMPS15 RQLT7 RQHT7 -
BIT 6
MACRA6 MACRA14 MACRD6 MACRD14 MACRD22 MACRD30 MACWD6 MACWD14 MACWD22 MACD30 MACAW 6 MACAW 14 EC HBF FL6 WT RMPS6 RMPS14 RQLT6 RQHT6 UCFRB
BIT 5
MACRA5 MACRA13 MACRD5 MACRD13 MACRD21 MACRD29 MACWD5 MACWD13 MACWD21 MACD29 MACAW 5 MACAW 13 LC CC3 FL5 FL13 CRCE RMPS5 RMPS13 RQLT5 RQHT5 CFRRB
BIT 4
MACRA4 MACRA12 MACRD4 MACRD12 MACRD20 MACRD28 MACWD4 MACWD12 MACWD20 MACD28 MACAW4 MACAW12 ED CC2 FL4 FL12 DB BF RMPS4 RMPS12 RQLT4 RQHT4 LERRB
BIT 3
MACRA3 MACRA11 MACRD3 MACRD11 MACRD19 MACRD27 MACWD3 MACWD11 MACWD19 MACD27 MACAW3 MACAW11 CRCS NCFQ LOC CC1 FL3 FL11 MIIE MCF RMPS3 RMPS11 RQLT3 RQHT3 RFOVFIE RFOVFLS CRCERRB
BIT 2
MACRA2 MACRA10 MACRD2 MACRD10 MACRD18 MACRD26 MACWD2 MACWD10 MACWD18 MACD26 MACAW2 MACAW10 H10S TPDFCB NOC CC0 FL2 FL10 FT UF RMPS2 RMPS10 RQLT2 RQHT2 RQVFIE RQOVFLS DBRB
BIT 1
MACRA1 MACRA09 MACRD1 MACRD9 MACRD17 MACRD25 MACWD1 MACWD09 MACWD17 MACD25 MACAW1 MACAW9 MCRW RESET ATFLOW TPRHBC LCO FL1 FL9 CS CF RMPS1 RMPS09 RQLT1 RQHT1 RQLTIE RQHTLS MIIERB
BIT 0
MACRA0 MACRA08 MACRD0 MACRD8 MACRD16 MACRD24 MACWD0 MACWD08 MACWD16 MACD24 MACAW0 MACAW8 MCS QLP JAME TPRCB FABORT DEF Fl0 Fl8 FTL LE RMPS0 RMPS08 RQLT0 RQHT0 RQHTIE RQLTLS BERRB
15Fh-17Fh are reserved. Note: the address locations in the above table are for Ethernet Interface 1. The address locations for Ethernet Interfaces 2 through 4 can be found with the following formula: Address for Port n = Address for Ethernet Port 1 + [0C0h x (n-1)]; for n = 1 to 4.
73 of 181
DS33Z44 Quad Ethernet Mapper
9.1.6
MAC Register Bit Map
Table 9-7. MAC Indirect Register Bit Map
ADDR 0000h 0001h 0002h 0003h 0004h 0005h 0006h 0007h 0008h 0009h 000Ah 000Bh 000Ch 000Dh 000Eh 000Fh 0010h 0011h 0012h 0013h 0014h 0015h 0016h 0017h 0018h 0019h 001Ah 001Bh 001Ch 001Dh 001Eh 001Fh 100h 101h 102h 103h 10Ch 10Dh 10Eh NAME
SU.MACCR 31:24 23:16 15:8 7:0 SU.MACAH 31:24 23:16 15:8 7:0 SU.MACAL 31:24 23:16 15:8 7:0 SU.MACMAH 31:24 23:16 15:8 7:0 SU.MACMAL 31:24 23:16 15:8 7:0 SU.MACMIIA 31:24 23:16 15:8 7:0 SU.MACMIID 31:24 23:16 15:8 7:0 SU.MACFCR 31:24 23:16 15:8 7:0
SU.MMCCTRL
BIT 7
RA DRO HO BOLMT1 Reserved Reserved PADR47 PADR39 PADR31 PADR23 PADR15 PADR07 MMA63 MMA55 MMA47 MMA39 MMA31 MMA23 MMA15 MMA07 Reserved Reserved PHYA4 MIIA1 Reserved Reserved MIID15 MIID07 PT15 PT07 Reserved Reserved Reserved Reserved Reserved MXFRM4 Reserved Reserved Reserved
BIT 6
Reserved OML1 Reserved BOLMT0 Reserved Reserved PADR46 PADR38 PADR30 PADR22 PADR14 PADR06 MMA62 MMA54 MMA46 MMA38 MMA30 MMA22 MMA14 MMA06 Reserved Reserved PHYA3 MIIA0 Reserved Reserved MIID14 MIID06 PT14 PT06 Reserved Reserved Reserved Reserved Reserved MXFRM3 Reserved Reserved Reserved
BIT 5
Reserved OML0 HP DC Reserved Reserved PADR45 PADR37 PADR29 PADR21 PADR13 PADR05 MMA61 MMA53 MMA45 MMA37 MMA29 MMA21 MMA13 MMA05 Reserved Reserved PHYA2 Reserved Reserved Reserved MIID13 MIID05 PT13 PT05 Reserved Reserved Reserved Reserved MXFRM10 MXFRM2 Reserved Reserved Reserved
BIT 4
HDB F LCC Reserved Reserved Reserved PADR44 PADR36 PADR28 PADR20 PADR12 PADR04 MMA60 MMA52 MMA44 MMA36 MMA28 MMA20 MMA12 MMA04 Reserved Reserved PHYA1 Reserved Reserved Reserved MIID12 MIID04 PT12 PT04 Reserved Reserved Reserved Reserved MXFRM9 MXFRM1 Reserved Reserved Reserved
BIT 3
PS PM DBF TE Reserved Reserved PADR43 PADR35 PADR27 PADR19 PADR11 PADR03 MMA59 MMA51 MMA43 MMA35 MMA27 MMA19 MMA11 MMA03 Reserved Reserved PHYA0 Reserved Reserved Reserved MIID11 MIID03 PT11 PT03 Reserved Reserved Reserved Reserved MXFRM8 MXFRM0 Reserved Reserved Reserved
BIT 2
Reserved PR DRTY RE Reserved Reserved PADR42 PADR34 PADR26 PADR18 PADR10 PADR02 MMA58 MMA50 MMA42 MMA34 MMA26 MMA18 MMA10 MMA02 Reserved Reserved MIIA4 Reserved Reserved Reserved MIID10 MIID02 PT10 PT02 Reserved PCF Reserved Reserved MXFRM7 Reserved Reserved Reserved Reserved
BIT 1
Reserved IF Reserved Reserved Reserved Reserved PADR41 PADR33 PADR25 PADR17 PADR09 PADR01 MMA57 MMA49 MMA41 MMA33 MMA25 MMA17 MMA09 MMA01 Reserved Reserved MIIA3 MIIW Reserved Reserved MIID09 MIID01 PT09 PT01 Reserved FCE Reserved Reserved MXFRM6 Reserved Reserved Reserved Reserved
BIT 0
Reserved PB ASTP Reserved Reserved Reserved PADR40 PADR32 PADR24 PADR16 PADR08 PADR00 MMA56 MMA48 MMA40 MMA32 MMA24 MMA16 MMA08 MMA00 Reserved Reserved MIIA2 MIIB Reserved Reserved MIID08 MIID00 PT08 PT00 Reserved FCB Reserved Reserved MXFRM5 Reserved Reserved Reserved Reserved
31:24 23:16 15:8 7:0
RESERVED - initialize to FF RESERVED - initialize to FF RESERVED - initialize to FF
74 of 181
DS33Z44 Quad Ethernet Mapper ADDR 10Fh 110h 111h 112h 113h 200h 201h 202h 203h 204h 205h 206h 207h 300h 301h 302h 303h 308h 309h 30Ah 30Bh 30Ch 30Dh 30Eh 30Fh 334h 335h 336h 337h 338h 339h 33Ah 33Bh NAME
RESERVED - initialize to FF RESERVED - initialize to FF RESERVED - initialize to FF RESERVED - initialize to FF RESERVED - initialize to FF SU.RxFrmCtr 31:24 23:16 15:8 7:0
SU.RxFrmOKCtr
BIT 7
Reserved Reserved Reserved Reserved Reserved
BIT 6
Reserved Reserved Reserved Reserved Reserved
BIT 5
Reserved Reserved Reserved Reserved Reserved
BIT 4
Reserved Reserved Reserved Reserved Reserved
BIT 3
Reserved Reserved Reserved Reserved Reserved
BIT 2
Reserved Reserved Reserved Reserved Reserved
BIT 1
Reserved Reserved Reserved Reserved Reserved
BIT 0
Reserved Reserved Reserved Reserved Reserved
RXFRMC31 RXFRMC30 RXFRMC29 RXFRMC28 RXFRMC27 RXFRMC26 RXFRMC25 RXFRMC24 RXFRMC23 RXFRMC22 RXFRMC21 RXFRMC20 RXFRMC19 RXFRMC18 RXFRMC17 RXFRMC16 RXFRMC15 RXFRMC14 RXFRMC13 RXFRMC12 RXFRMC11 RXFRMC10 RXFRMC9 RXFRMC8 RXFRMC7 RXFRMC6 RXFRMC5 RXFRMC4 RXFRMC3 RXFRMC2 RXFRMC1 RXFRMC0
RXFRMOK31 RXFRMOK23 RXFRMOK15 RXFRMOK7 TXFRMC31 TXFRMC23 TXFRMC15 TXFRMC7 TXBYTEC31 TXBYTEC23 TXBYTEC15 TXBYTEC7 RXFRMOK30 RXFRMOK22 RXFRMOK14 RXFRMOK6 TXFRMC30 TXFRMC22 TXFRMC14 TXFRMC6 TXBYTEC30 TXBYTEC22 TXBYTEC14 TXBYTEC6 RXFRMOK29 RXFRMOK21 RXFRMOK13 RXFRMOK5 TXFRMC29 TXFRMC21 TXFRMC13 TXFRMC5 TXBYTEC29 TXBYTEC21 TXBYTEC13 TXBYTEC5 RXFRMOK28 RXFRMOK20 RXFRMOK12 RXFRMOK4 TXFRMC28 TXFRMC20 TXFRMC12 TXFRMC4 TXBYTEC28 TXBYTEC20 TXBYTEC12 TXBYTEC4 RXFRMOK27 RXFRMOK19 RXFRMOK11 RXFRMOK3 TXFRMC27 TXFRMC19 TXFRMC11 TXFRMC3 TXBYTEC27 TXBYTEC19 TXBYTEC11 TXBYTEC3 RXFRMOK26 RXFRMOK18 RXFRMOK10 RXFRMOK2 TXFRMC26 TXFRMC18 TXFRMC10 TXFRMC2 TXBYTEC26 TXBYTEC18 TXBYTEC10 TXBYTEC2 RXFRMOK25 RXFRMOK17 RXFRMOK9 RXFRMOK1 TXFRMC25 TXFRMC17 TXFRMC9 TXFRMC1 TXBYTEC25 TXBYTEC17 TXBYTEC9 TXBYTEC1 RXFRMOK24 RXFRMOK16 RXFRMOK8 RXFRMOK0 TXFRMC24 TXFRMC16 TXFRMC8 TXFRMC0 TXBYTEC24 TXBYTEC16 TXBYTEC8 TXBYTEC0
31:24 23:16 15:8 7:0 SU.TxFrmCtr 23:16 15:8 7:0 SU.TxBytesCtr 23:16 15:8 7:0
SU.TxBytesOkCtr
TXBYTEOK31 TXBYTEOK30 TXBYTEOK29 TXBYTEOK28 TXBYTEOK27 TXBYTEOK26 TXBYTEOK25 TXBYTEOK24 TXBYTEOK23 TXBYTEOK22 TXBYTEOK21 TXBYTEOK20 TXBYTEOK19 TXBYTEOK18 TXBYTEOK17 TXBYTEOK16 TXBYTEOK15 TXBYTEOK14 TXBYTEOK13 TXBYTEOK12 TXBYTEOK11 TXBYTEOK10 TXBYTEOK9 TXBYTEOK7 TXFRMU31 TXFRMU23 TXFRMU15 TXFRMU7 TXFRMBD31 TXFRMBD23 TXFRMBD15 TXFRMBD7 TXBYTEOK6 TXFRMU30 TXFRMU22 TXFRMU14 TXFRMU6 TXFRMBD30 TXFRMBD22 TXFRMBD14 TXFRMBD6 TXBYTEOK5 TXFRMU29 TXFRMU21 TXFRMU13 TXFRMU5 TXFRMBD29 TXFRMBD21 TXFRMBD13 TXFRMBD5 TXBYTEOK4 TXFRMU28 TXFRMU20 TXFRMU12 TXFRMU4 TXFRMBD28 TXFRMBD20 TXFRMBD12 TXFRMBD4 TXBYTEOK3 TXFRMU27 TXFRMU19 TXFRMU11 TXFRMU3 TXFRMBD27 TXFRMBD19 TXFRMBD11 TXFRMBD3 TXBYTEOK2 TXFRMU26 TXFRMU18 TXFRMU10 TXFRMU2 TXFRMBD26 TXFRMBD18 TXFRMBD10 TXFRMBD2 TXBYTEOK1 TXFRMU25 TXFRMU17 TXFRMU9 TXFRMU1 TXFRMBD25 TXFRMBD17 TXFRMBD9 TXFRMBD1 TXBYTEOK8 TXBYTEOK0 TXFRMU24 TXFRMU16 TXFRMU8 TXFRMU0 TXFRMBD24 TXFRMBD16 TXFRMBD8 TXFRMBD0
23:16 15:8 7:0 SU.TxFrmUndr 23:16 15:8 7:0
SU.TxBdFrmCtr
23:16 15:8 7:0
Note that the addresses in the table above are the indirect addresses that must be provided to the SU.MACAWH and SU.MACAWL. All unused and reserved locations must be initialized to zero for proper operation unless specifically noted otherwise.
75 of 181
DS33Z44 Quad Ethernet Mapper
9.2
Global Register Definitions
Functions contained in the global registers include: framer reset, LIU reset, device ID, BERT interrupt status, framer interrupt status, IBO configuration, MCLK configuration, and BPCLK configuration. These registers are preserved to provide code compatibility with the multiport devices in this product family. The global registers bit descriptions are presented below.
Register Name: Register Description: Register Address: Bit # Name Default 7 ID07 0 6 ID06 0
GL.IDRL Global ID Low Register 00h 5 ID05 1 4 ID04 1 3 ID03 0 2 ID02 0 1 ID01 0 0 ID00 0
Bit 7: Future use Bit 6: Future use Bit 5: RMII Interface. If this bit is set the device contains a RMII interface. Bit 4: MII Interface. If this bit is set the device contains a MII interface. Bit 3: PHY. If this bit is set the device contains an Ethernet PHY. Bits 0 to 2: Device Revision. A three-bit count that is equal to 000b for the first die revision, and is incremented with each successive die revision. May not match the two-letter die revision code on the top brand of the device.
Register Name: Register Description: Register Address: Bit # Name Default 7 ID15 0 6 ID14 1
GL.IDRH Global ID High Register 01h 5 ID13 1 4 ID12 0 3 ID11 0 2 ID10 0 1 ID09 1 0 ID08 1
Bit 13 to 15: Number of ports in the device: 1. Bit 12: LIU. If this bit is set the device has LIU functionality. Bit 11: Framer. If this bit is set the device has a framer. Bit 10: Future use Bit 9: HDLC Interface or X.86. If this bit is set the device has HDLC or X.86 encapsulation. Bit 8: IMUX. If this bit is set the device has Inverse mux functionality.
76 of 181
DS33Z44 Quad Ethernet Mapper Register Name: Register Description: Register Address: Bit # Name Default 7 6 GL.CR1 Global Control Register 1 02h 5 4 3 2 REF_CLKO 0 1 INTM 0 0 RST 0
Bit 2: REF_CLKO OFF. This bit determines the REF_CLKO output mode. 1 = REF_CLKO is disabled and outputs an active low signal. 0 = REF_CLKO is active and in accordance with RMII/MII Selection Bit 1: INT Pin Mode (INTM). This bit determines the inactive mode of the INT pin. The INT pin always drives low when active. 1 = Pin is high impedance when not active 0 = Pin drives high when not active Bit 0: Reset (RST). When this bit is set to 1, all of the internal data path and status and control registers (except this RST bit), on all ports, are reset to their default state. This bit must be set high for a minimum of 100ns. 0 = Normal operation 1 = Reset and force all internal registers to their default values
Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0
GL.BLR Global BERT Connect Register 03h 5 0 4 0 3 GL.BLC4 0 2 GL.BLC3 0 1 GL.BLC2 0 0 GL.BLC1 0
Bit 3: BERT Connect 4. If this bit is set to 1, the BERT is connected to Serial Interface 4. Bit 2: BERT Connect 3. If this bit is set to 1, the BERT is connected to Serial Interface 3. Bit 1: BERT Connect 2. If this bit is set to 1, the BERT is connected to Serial Interface 2. Bit 0: BERT Connect 1. If this bit is set to 1, the BERT is connected to Serial Interface 1. The BERT transmitter is connected to the transmit serial port and the BERT receive to the receive serial port. When the BERT is connected, normal data transfer is interrupted. Note that connecting the BERT overrides a connection to the Serial Interface, if a connection exists. When the BERT is disconnected, the connection is restored. The BERT is unavailable in Hardware Mode. Do not assign more than one bit in this register to "1" at the same time.
77 of 181
DS33Z44 Quad Ethernet Mapper Register Name: Register Description: Register Address: Bit # Name Default 7 RLCALS4 0 6 RLCALS3 0 GL.RTCAL Global Receive and Transmit Serial Port Clock Activity Latched Status 04h 5 RLCALS2 0 4 RLCALS1 0 3 TLCALS4 0 2 TLCALS3 0 1 TLCALS2 0 0 TLCALS1 0
Bit 7: Receive Serial Interface Clock Activity Latched Status 4. This bit is set to 1 if the receive clock for Serial Interface 4 has activity. This bit is cleared upon read. Bit 6: Receive Serial Interface Clock Activity Latched Status 3. This bit is set to 1 if the receive clock for Serial Interface 3 has activity. This bit is cleared upon read. Bit 5: Receive Serial Interface Clock Activity Latched Status 2. This bit is set to 1 if the receive clock for Serial Interface 2 has activity. This bit is cleared upon read. Bit 4: Receive Serial Interface Clock Activity Latched Status 1. This bit is set to 1 if the receive clock for Serial Interface 1 has activity. This bit is cleared upon read. Bit 3: Transmit Serial Interface Clock Activity Latched Status 4. This bit is set to 1 if the transmit clock for Serial Interface 4 has activity. This bit is cleared upon read. Bit 2: Transmit Serial Interface Clock Activity Latched Status 3. This bit is set to 1 if the transmit clock for Serial Interface 3 has activity. This bit is cleared upon read. Bit 1: Transmit Serial Interface Clock Activity Latched Status 2. This bit is set to 1 if the transmit clock for Serial Interface 2 has activity. This bit is cleared upon read. Bit 0: Transmit Serial Interface Clock Activity Latched Status 1. This bit is set to 1 if the transmit clock for Serial Interface 1 has activity. This bit is cleared upon read.
Register Name: Register Description: Register Address: Bit # Name Default 7 0
GL.SRCALS Global SDRAM Reference Clock Activity Latched Status 05h 6 0 5 0 4 0 3 0 2 0 1 REFCLKS 0 0 SYSCLS 0
Bit 1: Reference Clock Activity Latched Status. This bit is set to 1 if REF_CLK has activity. This bit is cleared upon read. Bit 0: System Clock Input Latched Status. This bit is set to 1 if SYSCLKI has activity. This bit is cleared upon read.
78 of 181
DS33Z44 Quad Ethernet Mapper Register Name: Register Description: Register Address: Bit # Name Default 7 LIN4TIE 0 6 LIN3TIE 0 GL.LIE Global Serial Interface Interrupt Enable 06h 5 LIN2TIE 0 4 LIN1TIE 0 3 LIN4RIE 0 2 LIN3RIE 0 1 LIN2RIE 0 0 LIN1RIE 0
Bit 7: Serial Interface 4 TX Interrupt Enable (LINE4TIE). Setting this bit to 1 enables an interrupt on LIN4TIS. Bit 6: Serial Interface 3 TX Interrupt Enable (LINE3TIE). Setting this bit to 1 enables an interrupt on LIN3TIS. Bit 5: Serial Interface 2 TX Interrupt Enable (LINE2TIE). Setting this bit to 1 enables an interrupt on LIN2TIS. Bit 4: Serial Interface 1 TX Interrupt Enable (LINE1TIE). Setting this bit to 1 enables an interrupt on LIN1TIS. Bit 3: Serial Interface 4 RX Interrupt Enable (LINE4RIE). Setting this bit to 1 enables an interrupt on LIN4RIS. Bit 2: Serial Interface 3 RX Interrupt Enable (LINE3RIE). Setting this bit to 1 enables an interrupt on LIN3RIS. Bit 1: Serial Interface 2 RX Interrupt Enable (LINE2RIE). Setting this bit to 1 enables an interrupt on LIN2RIS. Bit 0: Serial Interface 1 RX Interrupt Enable (LINE1RIE). Setting this bit to 1 enables an interrupt on LIN1RIS.
79 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: Bit # Name Default 7 LIN4TIS 0 6 LIN3TIS 0
GL.LIS Global Serial Interface Interrupt Status 07h 5 LIN2TIS 0 4 LIN1TIS 0 3 LIN4RIS 0 2 LIN3RIS 0 1 LIN2RIS 0 0 LIN1RIS 0
Bit 7: Serial Interface 4 TX Interrupt Status (LIN4TIS). This bit is set if Serial Interface 4 Transmit has an enabled interrupt generating event. Serial Interface interrupts consist of HDLC interrupts and X.86 interrupts. Bit 6: Serial Interface 3 TX Interrupt Status (LIN3TIS). This bit is set if Serial Interface 3 Transmit has an enabled interrupt generating event. Serial Interface interrupts consist of HDLC interrupts and X.86 interrupts. Bit 5: Serial Interface 2 TX Interrupt Status (LIN2TIS). This bit is set if Serial Interface 2 Transmit has an enabled interrupt generating event. Serial Interface interrupts consist of HDLC interrupts and X.86 interrupts. Bit 4: Serial Interface 1 TX Interrupt Status (LIN1TIS). This bit is set if Serial Interface 1 Transmit has an enabled interrupt generating event. Serial Interface interrupts consist of HDLC interrupts and X.86 interrupts. Bit 3: Serial Interface 4 RX Interrupt Status (LIN4RIS). This bit is set if Serial Interface 4 Receive has an enabled interrupt generating event. Serial Interface interrupts consist of HDLC interrupts and X.86 interrupts. Bit 2: Serial Interface 3 RX Interrupt Status (LIN3RIS). This bit is set if Serial Interface 3 Receive has an enabled interrupt generating event. Serial Interface interrupts consist of HDLC interrupts and X.86 interrupts. Bit 1: Serial Interface 2 RX Interrupt Status (LIN2RIS). This bit is set if Serial Interface 2 Receive has an enabled interrupt generating event. Serial Interface interrupts consist of HDLC interrupts and X.86 interrupts. Bit 0: Serial Interface 1 RX Interrupt Status (LIN1RIS). This bit is set if Serial Interface 1 Receive has an enabled interrupt generating event. Serial Interface interrupts consist of HDLC interrupts and X.86 interrupts.
80 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0
GL.SIE Global Ethernet Interface Interrupt Enable 08h 5 0 4 0 3 SUB4IE 0 2 SUB3IE 0 1 SUB2IE 0 0 SUB1IE 0
Bit 3: Ethernet Interface 4 Interrupt Enable (SUB4IE). Setting this bit to 1 enables an interrupt on SUB4S. Bit 2: Ethernet Interface 3 Interrupt Enable (SUB3IE). Setting this bit to 1 enables an interrupt on SUB3S. Bit 1: Ethernet Interface 2 Interrupt Enable (SUB2IE). Setting this bit to 1 enables an interrupt on SUB2S. Bit 0: Ethernet Interface 1 Interrupt Enable (SUB1IE). Setting this bit to 1 enables an interrupt on SUB1S.
Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0
GL.SIS Global Ethernet Interface Interrupt Status 09h 5 0 4 0 3 SUB4IS 0 2 SUB3IS 0 1 SUB2IS 0 0 SUB1IS 0
Bit 4: Ethernet Interface 4 Interrupt Status (SUB4IS). This bit is set to 1 if Ethernet Interface 4 has an enabled interrupt-generating event. The Ethernet Interface consists of the MAC and The RMII/MII port. Bit 3: Ethernet Interface 3 Interrupt Status (SUB3IS). This bit is set to 1 if Ethernet Interface 3 has an enabled interrupt-generating event. The Ethernet Interface consists of the MAC and The RMII/MII port. Bit 2: Ethernet Interface 2 Interrupt Status (SUB2IS). This bit is set to 1 if Ethernet Interface 2 has an enabled interrupt-generating event. The Ethernet Interface consists of the MAC and The RMII/MII port. Bit 0: Ethernet Interface 1 Interrupt Status (SUB1IS). This bit is set to 1 if Ethernet Interface 1 has an enabled interrupt-generating event. The Ethernet Interface consists of the MAC and The RMII/MII port.
81 of 181
DS33Z44 Quad Ethernet Mapper Register Name: Register Description: Register Address: Bit # Name Default 7 TQ4IE 0 6 TQ3IE 0 GL.TRQIE Global Transmit Receive Queue Interrupt Enable 0Ah 5 TQ2IE 0 4 TQ1IE 0 3 RQ4IE 0 2 RQ3IE 0 1 RQ2IE 0 0 RQ1IE 0
Bit 7: Transmit Queue 4 Interrupt Enable (TQ4IE). Setting this bit to 1 enables an interrupt on TQ4IS. Bit 6: Transmit Queue 3 Interrupt Enable (TQ3IE). Setting this bit to 1 enables an interrupt on TQ3IS. Bit 5: Transmit Queue 2 Interrupt Enable (TQ2IE). Setting this bit to 1 enables an interrupt on TQ2IS. Bit 4: Transmit Queue 1 Interrupt Enable (TQ1IE). Setting this bit to 1 enables an interrupt on TQ1IS. Bit 3: Receive Queue 4 Interrupt Enable (RQ4IE). Setting this bit to 1 enables an interrupt on RQ4IS. Bit 2: Receive Queue 3 Interrupt Enable (RQ3IE). Setting this bit to 1 enables an interrupt on RQ3IS. Bit 1: Receive Queue 2 Interrupt Enable (RQ2IE). Setting this bit to 1 enables an interrupt on RQ2IS. Bit 0: Receive Queue 1 Interrupt Enable (RQ1IE). Setting this bit to 1 enables an interrupt on RQ1IS.
82 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: Bit # Name Default 7 TQ4IS 0 6 TQ3IS 0
GL.TRQIS Global Transmit Receive Queue Interrupt Status 0Bh 5 TQ2IS 0 4 TQ1IS 0 3 RQ4IS 0 2 RQ3IS 0 1 RQ2IS 0 0 RQ1IS 0
Bit 7: Transmit Queue 4 Interrupt Enable (TQ4IS). If this bit is set to 1, the Transmit Queue 4 has interrupt status event. Transmit queue events are transmit queue crossing thresholds and queue overflows. Bit 6: Transmit Queue 3 Interrupt Enable (TQ3IS). If this bit is set to 1, the Transmit Queue 3 has interrupt status event. Transmit queue events are transmit queue crossing thresholds and queue overflows. Bit 5: Transmit Queue 2 Interrupt Enable (TQ2IS). If this bit is set to 1, the Transmit Queue 2 has interrupt status event. Transmit queue events are transmit queue crossing thresholds and queue overflows. Bit 4: Transmit Queue 1 Interrupt Enable (TQ1IS). If this bit is set to 1, the Transmit Queue 1 has interrupt status event. Transmit queue events are transmit queue crossing thresholds and queue overflows. Bit 3: Receive Queue 4 Interrupt Status (RQ4IS). If this bit is set to 1, the Receive Queue 4 has interrupt status event. Receive queue events are transmit queue crossing thresholds and queue overflows. Bit 2: Receive Queue 3 Interrupt Status (RQ3IS). If this bit is set to 1, the Receive Queue 3 has interrupt status event. Receive queue events are transmit queue crossing thresholds and queue overflows. Bit 1: Receive Queue 2 Interrupt Status (RQ2IS). If this bit is set to 1, the Receive Queue 2 has interrupt status event. Receive queue events are transmit queue crossing thresholds and queue overflows. Bit 0: Receive Queue 1 Interrupt Status (RQ1IS). If this bit is set to 1, the Receive Queue 1 has interrupt status event. Receive queue events are transmit queue crossing thresholds and queue overflows.
83 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0
GL.BIE Global BERT Interrupt Enable 0Ch 5 0 4 0 3 0 2 0 1 0 0 BIE 0
Bit 0: BERT Interrupt Enable (BIE). Setting this bit to 1 enables an interrupt on BIS.
Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0
GL.BIS Global BERT Interrupt Status 0Dh 5 0 4 0 3 0 2 0 1 0 0 BIS 0
Bit 0: BERT Interrupt Status (BIS). This bit is set to 1 if the BERT has an enabled interrupt generating event.
Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0
GL.CON1 Connection Register for Ethernet Interface 1 0Eh 5 0 4 0 3 0 2 LINE1[2] 0 1 LINE1[1] 0 0 LINE1[0] 1
Bits 0 to 2: LINE1[0:2]. The LINE1[0:2] bits select the Serial port that is to be connected to Ethernet Interface 1. Note that bidirectional connection is assumed between the Serial and Ethernet Interfaces. The connection register and corresponding queue size must be defined for proper operation. Writing a 0 to this register will disconnect the connection. When a connection is disconnected, "1"s are sourced to the Serial Interface transmit and to the HDLC receiver. The clocks to the HDLC transmitter and receiver are turned off (0). A LINE1[0:2] value of 1 connects Ethernet Interface 1 to Serial Interface 1. A LINE1[0:2] value of 2 connects Ethernet Interface 1 to Serial Interface 2. A LINE1[0:2] value of 3 connects Ethernet Interface 1 to Serial Interface 3. A LINE1[0:2] value of 4 connects Ethernet Interface 1 to Serial Interface 4. The user must reset the queue pointers before a connection is made and after a connection is disconnected.
84 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0
GL.CON2 Connection Register for Ethernet Interface 2 0Fh 5 0 4 0 3 0 2 LINE2[2] 0 1 LINE2[1] 1 0 LINE2[0] 0
Bits 0 to 2: LINE2[0:2]. The LINE2[0:2] bits select the Serial port that is to be connected to Ethernet Interface 2. Note that bidirectional connection is assumed between the Serial and Ethernet Interfaces. The connection register and corresponding queue size must be defined for proper operation. Writing a 0 to this register will disconnect the connection. When a connection is disconnected, "1"s are sourced to the Serial Interface transmit and to the HDLC receiver. The clocks to the HDLC transmitter and receiver are turned off (0). A LINE2[0:2] value of 1 connects Ethernet Interface 2 to Serial Interface 1. A LINE2[0:2] value of 2 connects Ethernet Interface 2 to Serial Interface 2. A LINE2[0:2] value of 3 connects Ethernet Interface 2 to Serial Interface 3. A LINE2[0:2] value of 4 connects Ethernet Interface 2 to Serial Interface 4. The user must reset the queue pointers before a connection is made and after a connection is disconnected.
Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0
GL.CON3 Connection Register for Ethernet Interface 3 10h 5 0 4 0 3 0 2 LINE3[2] 0 1 LINE3[1] 1 0 LINE3[0] 1
Bits 0 to 2: LINE3[0:2]. The LINE3[0:2] bits select the Serial port that is to be connected to Ethernet Interface 3. Note that bidirectional connection is assumed between the Serial and Ethernet Interfaces. The connection register and corresponding queue size must be defined for proper operation. Writing a 0 to this register will disconnect the connection. When a connection is disconnected, "1"s are sourced to the Serial Interface transmit and to the HDLC receiver. The clocks to the HDLC transmitter and receiver are turned off (0). A LINE3[0:2] value of 1 connects Ethernet Interface 3 to Serial Interface 1. A LINE3[0:2] value of 2 connects Ethernet Interface 3 to Serial Interface 2. A LINE3[0:2] value of 3 connects Ethernet Interface 3 to Serial Interface 3. A LINE3[0:2] value of 4 connects Ethernet Interface 3 to Serial Interface 4. The user must reset the queue pointers before a connection is made and after a connection is disconnected.
85 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0
GL.CON4 Connection Register for Ethernet Interface 4 11h 5 0 4 0 3 0 2 LINE4[2] 1 1 LINE4[1] 0 0 LINE4[0] 0
Bits 0 to 2: LINE4[0:2]. The LINE4[0:2] bits select the Serial port that is to be connected to Ethernet Interface 4. Note that bidirectional connection is assumed between the Serial and Ethernet Interfaces. The connection register and corresponding queue size must be defined for proper operation. Writing a 0 to this register will disconnect the connection. When a connection is disconnected, "1"s are sourced to the Serial Interface transmit and to the HDLC receiver. The clocks to the HDLC transmitter and receiver are turned off (0). A LINE4[0:2] value of 1 connects Ethernet Interface 4 to Serial Interface 1. A LINE4[0:2] value of 2 connects Ethernet Interface 4 to Serial Interface 2. A LINE4[0:2] value of 3 connects Ethernet Interface 4 to Serial Interface 3. A LINE4[0:2] value of 4 connects Ethernet Interface 4 to Serial Interface 4. The user must reset the queue pointers before a connection is made and after a connection is disconnected.
Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0
GL.C1QPR Connection 1 Queue Pointer Reset 12h 5 0 4 0 3 C1MRPRR 0 2 C1HWPRR 0 1 C1MHPR 0 0 C1HRPR 0
Bit 3: MAC Read Pointer Reset. If this bit is set to 1, the receive queue read pointer is reset for connection 1. The queue pointer must be reset after a disconnect and before a connection. Bit 2: HDLC Write Pointer Reset. If this bit is set to 1, the receive queue write pointer is reset for connection 1. The queue pointer must be reset after a disconnect and before a connection. Bit 1: HDLC Read Pointer Reset. If this bit is set to 1, the receive queue read pointer is reset for connection 1. The queue pointer must be reset after a disconnect and before a connection. Bit 0: MAC Transmit Write Pointer Reset. If this bit is set to 1, the receive queue write pointer is reset for connection 1. The queue pointer must be reset after a disconnect and before a connection.
86 of 181
DS33Z44 Quad Ethernet Mapper Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0 GL.C2QPR Connection 2 Queue Pointer Reset 13h 5 0 4 0 3 C2MRPRR 0 2 C2HWPRR 0 1 C2MHPR 0 0 C2HRPR 0
Bit 3: MAC Read Pointer Reset. If this bit is set to 1, the receive queue read pointer is reset for connection 2. The queue pointer must be reset after a disconnect and before a connection. Bit 2: HDLC Write Pointer Reset. If this bit is set to 1, the receive queue write pointer is reset for connection 2. The queue pointer must be reset after a disconnect and before a connection. Bit 1: HDLC Read Pointer Reset. If this bit is set to 1, the receive queue read pointer is reset for connection 2. The queue pointer must be reset after a disconnect and before a connection. Bit 0: MAC Transmit Write Pointer Reset. If this bit is set to 1, the receive queue write pointer is reset for connection 2. The queue pointer must be reset after a disconnect and before a connection.
Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0
GL.C3QPR Connection 3 Queue Pointer Reset 14h 5 0 4 0 3 C3MRPRR 0 2 C3HWPRR 0 1 C3MHPR 0 0 C3HRPR 0
Bit 3: MAC Read Pointer Reset. If this bit is set to 1, the receive queue read pointer is reset for connection 3. The queue pointer must be reset after a disconnect and before a connection. Bit 2: HDLC Write Pointer Reset. If this bit is set to 1, the receive queue write pointer is reset for connection 3. The queue pointer must be reset after a disconnect and before a connection. Bit 1: HDLC Read Pointer Reset. If this bit is set to 1, the receive queue read pointer is reset for connection 3. The queue pointer must be reset after a disconnect and before a connection. Bit 0: MAC Transmit Write Pointer Reset. If this bit is set to 1, the receive queue write pointer is reset for connection 3. The queue pointer must be reset after a disconnect and before a connection.
87 of 181
DS33Z44 Quad Ethernet Mapper Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0 GL.C4QPR Connection 4 Queue Pointer Reset 15h 5 0 4 0 3 C4MRPRR 0 2 C4HWPRR 0 1 C4MHPR 0 0 C4HRPR 0
Bit 3: MAC Read Pointer Reset. If this bit is set to 1, the receive queue read pointer is reset for connection 4. The queue pointer must be reset after a disconnect and before a connection. Bit 2: HDLC Write Pointer Reset. If this bit is set to 1, the receive queue write pointer is reset for connection 4. The queue pointer must be reset after a disconnect and before a connection. Bit 1: HDLC Read Pointer Reset. If this bit is set to 1, the receive queue read pointer is reset for connection 4. The queue pointer must be reset after a disconnect and before a connection. Bit 0: MAC Transmit Write Pointer Reset. If this bit is set to 1, the receive queue write pointer is reset for connection 4. The queue pointer must be reset after a disconnect and before a connection.
88 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0
GL.BISTEN BIST Enable 20h 5 0 4 0 3 0 2 0 1 0 0 BISTE 0
Bit 0: BIST Enable. If this bit is set the DS33Z44 performs BIST test on the SDRAM. Normal data communication is halted while BIST enable is high. The user must reset the DS33Z44 after completion of BIST test before normal dataflow can begin.
Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0
GL.BISTPF BIST PassFail 21h 5 0 4 0 3 0 2 0 1 BISTDN 0 0 BISTPF 0
Bit 1: BIST DONE. If this bit is set to 1, the DS33Z44 has completed the BIST Test initiated by BISTE. The pass fail result is available in BISTPF. Bit 0: BIST PassFail. This bit is equal to 0 after the DS33Z44 performs BIST testing on the SDRAM and the test passes. This bit is set to 1 if the test failed. This bit is valid only after the BIST test is complete and the BIST DN bit is set. If set this bit can only be cleared by resetting the DS33Z44.
89 of 181
DS33Z44 Quad Ethernet Mapper
9.3
Arbiter Registers
The Arbiter manages the transport between the Ethernet port and the Serial Interface. It is responsible for queuing and dequeuing data to an external SDRAM. The arbiter handles requests from the HDLC and MAC to transfer data to/from the SDRAM. The base address of the Arbiter register space is 0040h.
9.3.1
Arbiter Register Bit Descriptions
AR.RQSC1 Arbiter Receive Queue Size Connection 1 40h 6
RQSC1[6]
Register Name: Register Description: Register Address: Bit # Name Default 7
RQSC1[7]
5
RQSC1[5]
4
RQSC1[4]
3
RQSC1[3]
2
RQSC1[2]
1
RQSC1[1]
0
RQSC1[0]
0
0
1
1
1
1
0
1
Bits 0 to 7: Receive Queue Size Connection 1 RQSC1[0:7]. These 7 bits of the size of receive queue associated with connection 1. Receive queue is for data arriving from the MAC to be sent to the WAN. The Queue address size is defined in increments of 32 x 2048 bytes. The queue size is AR.RQSC1 multiplied by 32 to determine the number of 2048 byte packets that can be stored in the queue. This queue is constructed in the external SDRAM. Note: Queue size of 0 is not allowed and should never be set.
Register Name: Register Description: Register Address: Bit # Name Default 7
TQSC1[7]
AR.TQSC1 Arbiter Transmit Queue Size Connection 1 41h 6
TQSC1[6]
5
TQSC1[5]
4
TQSC1[4]
3
TQSC1[3]
2
TQSC1[2]
1
TQSC1[1]
0
TQSC1[0]
0
0
0
0
0
0
1
1
Bits 0 to 7 Transmit Queue Size Connection 1 TQSC1[0:7]. These 7 bits of the size of transmit queue associated with connection 1. The queue address size is defined in increments of 32 packets. The queue size is AR.TQSC1 multiplied by 32 to determine the number of 2048 byte packets that can be stored in the queue. The range of bytes will depend on the external SDRAM connected to the DS33Z44. Transmit queue is the data queue for data arriving on the WAN that is sent to the MAC. Note that queue size of 0 is not allowed and should never be set.
90 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: Bit # Name Default 7
RQSC2[7]
AR.RQSC2 Arbiter Receive Queue Size Connection 2 42h 6
RQSC2[6]
5
RQSC2[5]
4
RQSC2[4]
3
RQSC2[3]
2
RQSC2[2]
1
RQSC2[1]
0
RQSC2[0]
0
0
1
1
1
1
0
1
Bits 0 to 7: Receive Queue Size Connection 2 RQSC2[0:7]. These 7 bits of the size of receive queue associated with connection 2. Receive queue is for data arriving from the MAC to be sent to the WAN. The Queue address size is defined in increments of 32 x 2048 bytes. The queue size is AR.RQSC2 multiplied by 32 to determine the number of 2048 byte packets that can be stored in the queue. This queue is constructed in the external SDRAM. Note: Queue size of 0 is not allowed and should never be set.
Register Name: Register Description: Register Address: Bit # Name Default 7
TQSC2[7]
AR.TQSC2 Arbiter Transmit Queue Size Connection 2 43h 6
TQSC2[6]
5
TQSC2[5]
4
TQSC2[4]
3
TQSC2[3]
2
TQSC2[2]
1
TQSC2[1]
0
TQSC2[0]
0
0
0
0
0
0
1
1
Bits 0 to 7 Transmit Queue Size Connection 2 TQSC2[0:7]. These 7 bits of the size of transmit queue associated with connection 2. The queue address size is defined in increments of 32 packets. The queue size is AR.TQSC2 multiplied by 32 to determine the number of 2048 byte packets that can be stored in the queue. The range of bytes will depend on the external SDRAM connected to the DS33Z44. Transmit queue is the data queue for data arriving on the WAN that is sent to the MAC. Note that queue size of 0 is not allowed and should never be set.
Register Name: Register Description: Register Address: Bit # Name Default 7
RQSC3[7]
AR.RQSC3 Arbiter Receive Queue Size Connection 3 44h 6
RQSC3[6]
5
RQSC3[5]
4
RQSC3[4]
3
RQSC3[3]
2
RQSC3[2]
1
RQSC3[1]
0
RQSC3[0]
0
0
1
1
1
1
0
1
Bits 0 to 7: Receive Queue Size Connection 3 RQSC3[0:7]. These 7 bits of the size of receive queue associated with connection 3. Receive queue is for data arriving from the MAC to be sent to the WAN. The Queue address size is defined in increments of 32 x 2048 bytes. The queue size is AR.RQSC3 multiplied by 32 to determine the number of 2048 byte packets that can be stored in the queue. This queue is constructed in the external SDRAM. Note: Queue size of 0 is not allowed and should never be set.
91 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: Bit # Name Default 7
TQSC3[7]
AR.TQSC3 Arbiter Transmit Queue Size Connection 3 45h 6
TQSC3[6]
5
TQSC3[5]
4
TQSC3[4]
3
TQSC3[3]
2
TQSC3[2]
1
TQSC3[1]
0
TQSC3[0]
0
0
0
0
0
0
1
1
Bits 0 to 7 Transmit Queue Size Connection 3 TQSC3[0:7]. These 7 bits of the size of transmit queue associated with connection 3. The queue address size is defined in increments of 32 packets. The queue size is AR.TQSC3 multiplied by 32 to determine the number of 2048 byte packets that can be stored in the queue. The range of bytes will depend on the external SDRAM connected to the DS33Z44. Transmit queue is the data queue for data arriving on the WAN that is sent to the MAC. Note that queue size of 0 is not allowed and should never be set.
Register Name: Register Description: Register Address: Bit # Name Default 7
RQSC4[7]
AR.RQSC4 Arbiter Receive Queue Size Connection 4 46h 6
RQSC4[6]
5
RQSC4[5]
4
RQSC4[4]
3
RQSC4[3]
2
RQSC4[2]
1
RQSC4[1]
0
RQSC4[0]
0
0
1
1
1
1
0
1
Bits 0 to 7: Receive Queue Size Connection 4 RQSC4[0:7]. These 7 bits of the size of receive queue associated with connection 4. Receive queue is for data arriving from the MAC to be sent to the WAN. The Queue address size is defined in increments of 32 x 2048 bytes. The queue size is AR.RQSC4 multiplied by 32 to determine the number of 2048 byte packets that can be stored in the queue. This queue is constructed in the external SDRAM. Note: Queue size of 0 is not allowed and should never be set.
Register Name: Register Description: Register Address: Bit # Name Default 7
TQSC4[7]
AR.TQSC4 Arbiter Transmit Queue Size Connection 4 47h 6
TQSC4[6]
5
TQSC4[5]
4
TQSC4[4]
3
TQSC4[3]
2
TQSC4[2]
1
TQSC4[1]
0
TQSC4[0]
0
0
0
0
0
0
1
1
Bits 0 to 7 Transmit Queue Size Connection 4 TQSC4[0:7]. These 7 bits of the size of transmit queue associated with connection 4. The queue address size is defined in increments of 32 packets. The queue size is AR.TQSC4 multiplied by 32 to determine the number of 2048 byte packets that can be stored in the queue. The range of bytes will depend on the external SDRAM connected to the DS33Z44. Transmit queue is the data queue for data arriving on the WAN that is sent to the MAC. Note that queue size of 0 is not allowed and should never be set.
92 of 181
DS33Z44 Quad Ethernet Mapper
9.4
BERT Registers
BCR BERT Control Register 80h 6 PMU 0 5 RNPL 0 4 RPIC 0 3 MPR 0 2 APRD 0 1 TNPL 0 0 TPIC 0
Register Name: Register Description: Register Address: Bit # Name Default 7 0
Bit 7: This bit must be kept low for proper operation. Bit 6: Performance Monitoring Update (PMU). This bit causes a performance monitoring update to be initiated A 0 to 1 transition causes the performance monitoring registers to be updated with the latest data, and the counters reset (0 or 1). For a second performance monitoring update to be initiated, this bit must be set to 0, and back to 1. If PMU goes low before the PMS bit goes high, an update might not be performed. Bit 5: Receive New Pattern Load (RNPL). A zero to one transition of this bit will cause the programmed test pattern (QRSS, PTS, PLF [4:0}, PTF [4:0], and BSP [31:0]) to be loaded in to the receive pattern generator. This bit must be changed to zero and back to one for another pattern to be loaded. Loading a new pattern will forces the receive pattern generator out of the "Sync" state which causes a resynchronization to be initiated. Note: QRSS, PTS, PLF [4:0}, PTF [4:0], and BSP [31:0] must not change from the time this bit transitions from 0 to 1 until four RXCK clock cycle after this bit transitions from 0 to 1. Bit 4: Receive Pattern Inversion Control (RPIC). When 0, the receive incoming data stream is not altered. When 1, the receive incoming data stream is inverted. Bit 3: Manual Pattern Resynchronization (MPR). A zero to one transition of this bit will cause the receive pattern generator to resynchronize to the incoming pattern. This bit must be changed to zero and back to one for another resynchronization to be initiated. Note: A manual resynchronization forces the receive pattern generator out of the "Sync" state. Bit 2: Automatic Pattern Resynchronization Disable (APRD). When 0, the receive pattern generator will automatically resynchronize to the incoming pattern if six or more times during the current 64-bit window the incoming data stream bit and the receive pattern generator output bit did not match. When 1, the receive pattern generator will not automatically resynchronize to the incoming pattern. Note: Automatic synchronization is prevented by not allowing the receive pattern generator to automatically exit the "Sync" state. Bit 1: Transmit New Pattern Load (TNPL). A zero to one transition of this bit will cause the programmed test pattern (QRSS, PTS, PLF[4:0}, PTF[4:0], and BSP[31:0]) to be loaded in to the transmit pattern generator. This bit must be changed to zero and back to one for another pattern to be loaded. Note: QRSS, PTS, PLF[4:0}, PTF[4:0], and BSP[31:0] must not change from the time this bit transitions from 0 to 1 until four TXCK clock cycle after this bit transitions from 0 to 1. Bit 0: Transmit Pattern Inversion Control (TPIC). When 0, the transmit outgoing data stream is not altered. When 1, the transmit outgoing data stream is inverted.
93 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 QRSS 0
BPCLR BERT Pattern Configuration Low Register 82h 5 PTS 0 4 PLF4 0 3 PLF3 0 2 PLF2 0 1 PLF1 0 0 PLF0 0
Bit 6: QRSS Enable (QRSS). When 0, the pattern generator configuration is controlled by PTS, PLF[0:4], and PTF[0:4], and BSP[0:31]. When 1, the pattern generator configuration is forced to a QRSS pattern with a 20 17 generating polynomial of x + x + 1. The output of the pattern generator is forced to one if the next fourteen output bits are all zero. Bit 5: Pattern Type Select (PTS). When 0, the pattern is a PRBS pattern. When 1, the pattern is a repetitive pattern. Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0 BPCHR BERT Pattern Configuration High Register 83h 5 0 4 PTF4 0 3 PTF3 0 2 PTF2 0 1 PTF1 0 0 PTF0 0
Bits 4 to 0: Pattern Tap Feedback (PTF[4:0]). These five bits control the PRBS "tap" feedback of the pattern generator. The "tap" feedback is from bit y of the pattern generator (y = PTF[4:0] +1). These bits are ignored when programmed for a repetitive pattern. For a PRBS signal, the feedback is an XOR of bit n and bit y. The values possible are outlined in Section 8.15.
94 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: Bit # Name Default 7 BSP7 0 6 BSP6 0
BSPB0R BERT Pattern Byte 0 Register 84h 5 BSP5 0 4 BSP4 0 3 BSP3 0 2 BSP2 0 1 BSP1 0 0 BSP0 0
Bits 0 to 7: BERT Pattern (BSP[7:0]). Lower eight bits of 32 bits. Register description follows next register. Register Name: Register Description: Register Address: Bit # Name Default 7 BSP15 0 6 BSP14 0 BSPB1R BERT Pattern Byte 1 Register 85h 5 BSP13 0 4 BSP12 0 3 BSP11 0 2 BSP10 0 1 BSP9 0 0 BSP8 0
Bits 0 to 7: BERT Pattern (BSP[15:8]). 8 bits of 32 bits. Register description below.
Register Name: Register Description: Register Address: Bit # Name Default 7 BSP23 0 6 BSP22 0
BSPB2R BERT Pattern Byte 2 Register 86h 5 BSP21 0 4 BSP20 0 3 BSP19 0 2 BSP18 0 1 BSP17 0 0 BSP16 0
Bits 0 to 7: BERT Pattern (BSP[23:16]). 8 bits of 32 bits. Register description below. Register Name: Register Description: Register Address: Bit # Name Default 7 BSP31 0 6 BSP30 0 BSPB3R BERT Seed/Pattern Byte 3 Register 87h 5 BSP29 0 4 BSP28 0 3 BSP27 0 2 BSP26 0 1 BSP25 0 0 BSP24 0
Bits 0 to 8: BERT Pattern (BSP[31:24]). Upper 8 bits of 32 bits. Register description below.
BERT Pattern (BSP[31:0]). These 32 bits are the programmable seed for a transmit PRBS pattern, or the programmable pattern for a transmit or receive repetitive pattern. BSP(31) is the first bit output on the transmit side for a 32-bit repetitive pattern or 32-bit length PRBS. BSP(31) is the first bit input on the receive side for a 32bit repetitive pattern.
95 of 181
DS33Z44 Quad Ethernet Mapper Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0 TEICR Transmit Error Insertion Control Register 88h 5 TIER2 0 4 TIER1 0 3 TIER0 0 2 BEI 0 1 TSEI 0 0 0
Bits 3 to 5: Transmit Error Insertion Rate (TEIR[2:0]). These three bits indicate the rate at which errors are n inserted in the output data stream. One out of every 10 bits is inverted. TEIR[2:0] is the value n. A TEIR[2:0] value th of 0 disables error insertion at a specific rate. A TEIR[2:0] value of 1 result in every 10 bit being inverted. A th TEIR[2:0] value of 2 results in every 100 bit being inverted. Error insertion starts when this register is written to with a TEIR[2:0] value that is non-zero. If this register is written to during the middle of an error insertion process, the new error rate is started after the next error is inserted. Bit 2: Bit Error Insertion Enable (BEI). When 0, single bit error insertion is disabled. When 1, single bit error insertion is enabled. Bit 1: Transmit Single Error Insert (TSEI). This bit causes a bit error to be inserted in the transmit data stream if and single bit error insertion is enabled. A 0 to 1 transition causes a single bit error to be inserted. For a second bit error to be inserted, this bit must be set to 0, and back to 1. Note: If this bit transitions more than once between error insertion opportunities, only one error is inserted. All other bits in this register besides BEI and TSEI and TIER must be reset to 0 for proper operation.
Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0
BSR BERT Status Register 8Ch 5 0 4 0 3 PMS 0 2 0 1 BEC 0 0 OOS 0
Bit 3: Performance Monitoring Update Status (PMS). This bit indicates the status of the receive performance monitoring register (counters) update. This bit will transition from low to high when the update is completed. PMS is asynchronously forced low when the PMU bit goes low. Bit 1: Bit Error Count (BEC). When 0, the bit error count is zero. When 1, the bit error count is one or more. Bit 0: Out Of Synchronization (OOS). When 0, the receive pattern generator is synchronized to the incoming pattern. When 1, the receive pattern generator is not synchronized to the incoming pattern.
96 of 181
DS33Z44 Quad Ethernet Mapper Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0 BSRL BERT Status Register Latched 8Eh 5 0 4 0 3 PMSL 0 2 BEL 0 1 BECL 0 0 OOSL 0
Bit 3: Performance Monitor Update Status Latched (PMSL). This bit is set when the PMS bit transitions from 0 to 1. Bit 2: Bit Error Detected Latched (BEL). This bit is set when a bit error is detected. Bit 1: Bit Error Count Latched (BECL). This bit is set when the BEC bit transitions from 0 to 1. Bit 0: Out Of Synchronization Latched (OOSL). This bit is set when the OOS bit changes state.
Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0
BSRIE BERT Status Register Interrupt Enable 90h 5 0 4 0 3 PMSIE 0 2 BEIE 0 1 BECIE 0 0 OOSIE 0
Bit 3: Performance Monitoring Update Status Interrupt Enable (PMSIE). This bit enables an interrupt if the PMSL bit is set. 0 = Interrupt disabled 1 = Interrupt enabled Bit 2: Bit Error Interrupt Enable (BEIE). This bit enables an interrupt if the BEL bit is set. 0 = Interrupt disabled 1 = Interrupt enabled Bit 1: Bit Error Count Interrupt Enable (BECIE). This bit enables an interrupt if the BECL bit is set. 0 = Interrupt disabled 1 = Interrupt enabled Bit 0: Out Of Synchronization Interrupt Enable (OOSIE). This bit enables an interrupt if the OOSL bit is set. 0 = Interrupt disabled 1 = Interrupt enabled
97 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: Bit # Name Default 7 BEC7 0 6 BEC6 0
RBECB0R Receive Bit Error Count Byte 0 Register 94h 5 BEC5 0 4 BEC4 0 3 BEC3 0 2 BEC2 0 1 BEC1 0 0 BEC0 0
Bits 0 to 7: Bit Error Count (BEC[0:7]). Lower eight bits of 24 bits. Register description below.
Register Name: Register Description: Register Address: Bit # Name Default 7 BEC15 0 6 BEC14 0
RBECB1R Receive Bit Error Count Byte 1 Register 95h 5 BEC13 0 4 BEC12 0 3 BEC11 0 2 BEC10 0 1 BEC9 0 0 BEC8 0
Bits 0 to 7: Bit Error Count (BEC[8:15]). Eight bits of a 24-bit value. Register description below.
Register Name: Register Description: Register Address: Bit # Name Default 7 BEC23 0 6 BEC22 0
RBECR2 Receive Bit Error Count Byte 2 Register 96h 5 BEC21 0 4 BEC20 0 3 BEC19 0 2 BEC18 0 1 BEC17 0 0 BEC16 0
Bits 0 to 7: Bit Error Count (BEC[23:16]). Upper 8-bits of the register. Bit Error Count (BEC[23:0]). These twenty-four bits indicate the number of bit errors detected in the incoming data stream. This count stops incrementing when it reaches a count of FF FFFFh. The associated bit error counter will not incremented when an OOS condition exists.
98 of 181
DS33Z44 Quad Ethernet Mapper Register Name: Register Description: Register Address: Bit # Name Default 7 BC7 0 6 BC6 0 RBCB0 Receive Bit Count Byte 0 Register 98h 5 BC5 0 4 BC4 0 3 BC3 0 2 BC2 0 1 BC1 0 0 BC0 0
Bits 0 to 7: Bit Count (BC[7:0]). Eight bits of a 32-bit value. Register description below.
Register Name: Register Description: Register Address: Bit # Name Default 7 BC15 0 6 BC14 0
RBCB1 Receive Bit Count Byte 1 Register #1 99h 5 BC13 0 4 BC12 0 3 BC11 0 2 BC10 0 1 BC9 0 0 BC8 0
Bits 0 to 7: Bit Count (BC[15:8]). Eight bits of a 32-bit value. Register description below.
Register Name: Register Description: Register Address: Bit # Name Default 7 BC23 0 6 BC22 0
RBCB2 Receive Bit Count Byte 2 Register 9Ah 5 BC21 0 4 BC20 0 3 BC19 0 2 BC18 0 1 BC17 0 0 BC16 0
Bits 0 to 7: Bit Count (BC[23:16]). Eight bits of a 32-bit value. Register description below. Register Name: Register Description: Register Address: Bit # Name Default 7 BC31 0 6 BC30 0 RBCB3 Receive Bit Count Byte 3 Register 9Bh 5 BC29 0 4 BC28 0 3 BC27 0 2 BC26 0 1 BC25 0 0 BC24 0
Bits 0 to 7: Bit Count (BC[31:24]). These thirty-two bits indicate the number of bits in the incoming data stream. This count stops incrementing when it reaches a count of FFFF FFFFh. The associated bit counter will not incremented when an OOS condition exists.
99 of 181
DS33Z44 Quad Ethernet Mapper
9.5
Serial Interface Registers
The Serial Interface contains the Serial HDLC transport circuitry and the associated serial port. The Serial Interface register map consists of registers that are common functions, transmit functions, and receive functions. Bits that are underlined are read-only; all other bits can be written. All reserved registers and bits with "-" designation should be written to zero, unless specifically noted in the register definition. When read, the information from reserved registers and bits designated with "-" should be discarded. Counter registers are updated by asserting (low to high transition) the associated performance monitoring update signal (xxPMU). During the counter register update process, the associated performance monitoring status signal (xxPMS) is deasserted. The counter register update process consists of loading the counter register with the current count, resetting the counter, forcing the zero count status indication low for one clock cycle, and then asserting xxPMS. No events are missed during this update procedure. A latched bit is set when the associated event occurs, and remains set until it is cleared by reading. Once cleared, a latched bit will not be set again until the associated event occurs again. Reserved configuration bits and registers should be written to zero.
9.5.1
Serial Interface Transmit and Common Registers
Serial Interface Transmit Registers are used to control the HDLC transmitter associated with each Serial Interface. Note that throughout this document the HDLC Processor is also referred to as a "packet processor".
9.5.2
Serial Interface Transmit Register Bit Descriptions
LI.TSLCR Transmit Serial Interface Configuration Register 0C0h, 180h, 240h, 300h 6 0 5 0 4 0 3 0 2 0 1 0 0 TDENPLT 0
Register Name: Register Description: Register Address: Bit # Name Default 7 0
Bit 0: Transmit Data Enable Polarity. If set to 1, TDENn is an active-low enable. In the default mode, when TDEN is logic high, the data is enabled and output by the DS33Z44.
Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0
LI.RSTPD Serial Interface Reset Register 0C1h, 181h, 241h, 301h 5 0 4 0 3 0 2 0 1 RESET 0 0 0
Bit 1: Reset. If this bit set to 1, the Data Path and Control and Status for this interface are reset. The Serial Interface is held in Reset as long as this bit is high. This bit must be high for a minimum of 200 nsec for a valid reset to occur.
100 of 181
DS33Z44 Quad Ethernet Mapper Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0 LI.LPBK Serial Interface Loopback Control Register 0C2h, 182h, 242h, 302h 5 0 4 0 3 0 2 0 1 0 0 QLP 0
Bit 0: Queue Loopback Enable. If this bit set to 1, data received on the Serial Interface is looped back to the Serial Interface transmitter. Received data will not be sent from the Serial Interface to the Ethernet Interface. Buffered packet data will remain in queue until the loopback is removed.
9.5.3
Transmit HDLC Processor Registers
LI.TPPCL Transmit Packet Processor Control Low Register 0C4h, 184h, 244h, 304h 6 0 5 TFAD 0 4 TF16 0 3 TIFV 0 2 TSD 0 1 TBRE 0 0 TIAEI 0
Register Name: Register Description: Register Address: Bit # Name Default 7 0
Note: The user should take care not to modify this register value during packet error insertion.
Bits 5 and 6: Transmit FCS Append Disable (TFAD). This bit controls whether or not an FCS is appended to the end of each packet. When equal to 0, the calculated FCS bytes are appended to packets. When set to 1, packets are transmitted without FCS. In X.86 Mode, FCS is always 32 bits and is always appended to the packet. Bit 4: Transmit FCS-16 Enable (TF16). When 0, the FCS processing uses a 32-bit FCS. When 1, the FCS processing uses a 16-bit FCS. In X.86 Mode 32-bit FCS processing is enabled. Bit 3: Transmit Bit Synchronous Interframe Fill Value (TIFV). When 0, interframe fill is done with the flag sequence (7Eh). When 1, interframe fill is done with all '1's. This bit is ignored in byte synchronous mode. In X.86 mode the interframe flag is always 7E. Bit 2: Transmit Scrambling Disable (TSD). When equal to 0, X +1 scrambling is performed. When set to 1, scrambling is disabled. Note that in hardware mode, transmit scrambling is controlled by the SCD hardware pin. Bit 1: Transmit Bit Reordering Enable (TBRE). When equal to 0, bit reordering is disabled (The first bit transmitted is from the MSB of the transmit FIFO byte TFD [7]). When set to 1, bit reordering is enabled (The first bit transmitted is from the LSB of the transmit FIFO byte TFD [0]). Note that this function can be controlled in Hardware mode with the BREO hardware pin. Bit 0: Transmit Initiate Automatic Error Insertion (TIAEI). This write-only bit initiates error insertion. See the LI.TEPHC register definition for details of usage.
43
Register Name: Register Description: Register Address: Bit # Name Default 7 TIFG7 0 6 TIFG6 0
LI.TIFGC Transmit Interframe Gapping Control Register 0C5h, 185h, 245h, 305h 5 TIFG5 0 4 TIFG4 0 3 TIFG3 0 2 TIFG2 0 1 TIFG1 0 0 TIFG0 1
Bits 0 to 7: Transmit Interframe Gapping (TIFG[7:0]). These eight bits indicate the number of additional flags and bytes of interframe fill to be inserted between packets. The number of flags and bytes of interframe fill between packets is at least the value of TIFG[7:0] plus 1. Note: If interframe fill is set to all 1's, a TFIG value of 2 or 3 will result in a flag, two bytes of 1's, and an additional flag between packets. 101 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: Bit # Name Default 7 TPEN7 0 6 TPEN6 0
LI.TEPLC Transmit Errored Packet Low Control Register 0C6h, 186h, 246h, 306h 5 TPEN5 0 4 TPEN4 0 3 TPEN3 0 2 TPEN2 0 1 TPEN1 0 0 TPEN0 0
Bits 0 to 7: Transmit Errored Packet Insertion Number (TPEN[7:0]). These eight bits indicate the total number of errored packets to be transmitted when triggered by TIAEI. Error insertion will end after this number of errored packets has been transmitted. A value of FFh results in continuous errored packet insertion at the specified rate.
Register Name: Register Description: Register Address: Bit # Name Default 7 MEIMS 0 6 TPER6 0
LI.TEPHC Transmit Errored Packet High Control Register 0C7h, 187h, 247h, 307h 5 TPER5 0 4 TPER4 0 3 TPER3 0 2 TPER2 0 1 TPER1 0 0 TPER0 0
Bit 7: Manual Error Insert Mode Select (MEIMS). When 0, the transmit manual error insertion signal (TMEI) will not cause errors to be inserted. When 1, TMEI will cause an error to be inserted when it transitions from a 0 to a 1. Note: Enabling TMEI does not disable error insertion using TCER[6:0] and TCEN[7:0]. Bits 0 to 6: Transmit Errored Packet Insertion Rate (TPER[6:0]). These seven bits indicate the rate at which y errored packets are to be output. One out of every x * 10 packets is to be an errored packet. TPER[3:0] is the value x, and TPER[6:4] is the value y, which has a maximum value of 6. If TPER[3:0] has a value of 0h, errored 6 packet insertion is disabled. If TPER[6:4] has a value of 6xh or 7xh the errored packet rate is x * 10 . A TPER[6:0] th value of 01h results in every packet being errored. A TPER[6:0] value of 0Fh results in every 15 packet being th errored. A TPER[6:0] value of 11h results in every 10 packet being errored. To initiate automatic error insertion, use the following routine: 1) Configure LI.TEPLC and LI.TEPHC for the desired error insertion mode. 2) Write the LI.TPPCL.TIAEI bit to 1. Note that this bit is write-only. 3) If not using continuous error insertion (LI.TPELC is not equal to FFh), the user should monitor the LI.TPPSR.TEPF bit for completion of the error insertion. If interrupt on completion of error insertion is enabled (LI.TPPSRIE.TEPFIE = 1), the user only needs to wait for the interrupt condition. 4) Proceed with the cleanup routine listed below. Cleanup routine: 1) Write LI.TEPLC and LI.TEPHC each to 00h. 2) Write the LI.TPPCL.TIAEI bit to 0.
102 of 181
DS33Z44 Quad Ethernet Mapper Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0 LI.TPPSR Transmit Packet Processor Status Register 0C8h, 188h, 248h, 308h 5 0 4 0 3 0 2 0 1 0 0 TEPF 0
Bit 0: Transmit Errored Packet Insertion Finished (TEPF). This bit is set when the number of errored packets indicated by the TPEN[7:0] bits in the TEPC register have been transmitted. This bit is cleared when errored packet insertion is disabled, or a new errored packet insertion process is initiated.
Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0
LI.TPPSRL Transmit Packet Processor Status Register Latched 0C9h, 189h, 249h, 309h 5 0 4 0 3 0 2 0 1 0 0 TEPFL 0
Bit 0: Transmit Errored Packet Insertion Finished Latched (TEPFL). This bit is set when the TEPF bit in the TPPSR register transitions from zero to one.
Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0
LI.TPPSRIE Transmit Packet Processor Status Register Interrupt Enable 0CAh, 18Ah, 24Ah, 30Ah 5 0 4 0 3 0 2 0 1 0 0 TEPFIE 0
Bit 0: Transmit Errored Packet Insertion Finished Interrupt Enable (TEPFIE). This bit enables an interrupt if the TEPFL bit in the LI.TPPSRL register is set. 0 = interrupt disabled 1 = interrupt enabled
103 of 181
DS33Z44 Quad Ethernet Mapper Register Name: Register Description: Register Address: Bit # Name Default 7 TPC7 0 6 TPC6 0 LI.TPCR0 Transmit Packet Count Byte 0 0CCh, 18Ch, 24Ch, 30Ch 5 TPC5 0 4 TPC4 0 3 TPC3 0 2 TPC2 0 1 TPC1 0 0 TPC0 0
Bits 0 to 7: Transmit Packet Count (TPC[7:0]). Eight bits of 24 bit value. Register description below.
Register Name: Register Description: Register Address: Bit # Name Default 7 TPC15 0 6 TPC14 0
LI.TPCR1 Transmit Packet Count Byte 1 0CDh, 18Dh, 24Dh, 30Dh 5 TPC13 0 4 TPC12 0 3 TPC11 0 2 TPC10 0 1 TPC9 0 0 TPC8 0
Bits 0 to 7: Transmit Packet Count (TPC[15:8]). Eight bits of 24 bit value. Register description below.
Register Name: Register Description: Register Address: Bit # Name Default 7 TPC23 0 6 TPC22 0
LI.TPCR2 Transmit Packet Count Byte 2 0CEh, 18Eh, 24Eh, 30Eh 5 TPC21 0 4 TPC20 0 3 TPC19 0 2 TPC18 0 1 TPC17 0 0 TPC16 0
Bits 0 to 7: Transmit Packet Count (TPC[23:16]). These twenty-four bits indicate the number of packets extracted from the Transmit FIFO and output in the outgoing data stream.
104 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: Bit # Name Default 7 TBC7 0 6 TBC6 0
LI.TBCR0 Transmit Byte Count Byte 0 0D0h, 190h, 250h, 310h 5 TBC5 0 4 TBC4 0 3 TBC3 0 2 TBC2 0 1 TBC1 0 0 TBC0 0
Bits 0 to 7: Transmit Byte Count (TBC[0:7]). Eight bits of 32 bit value. Register description below.
Register Name: Register Description: Register Address: Bit # Name Default 7 TBC15 0 6 TBC14 0
LI.TBCR1 Transmit Byte Count Byte 1 0D1h, 191h, 251h, 311h 5 TBC13 0 4 TBC12 0 3 TBC11 0 2 TBC10 0 1 TBC9 0 0 TBC8 0
Bits 0 to 7: Transmit Byte Count (TBC[15:8]). Eight bits of 32 bit value. Register description below. Register Name: Register Description: Register Address: Bit # Name Default 7 TBC23 0 6 TBC22 0 LI.TBCR2 Transmit Byte Count Byte 2 0D2h, 192h, 252h, 312h 5 TBC21 0 4 TBC20 0 3 TBC19 0 2 TBC18 0 1 TBC17 0 0 TBC16 0
Bits 0 to 7: Transmit Byte Count (TBC[23:16]). Eight bits of 32 bit value. Register description below.
Register Name: Register Description: Register Address: Bit # Name Default 7 TBC31 0 6 TBC30 0
LI.TBCR3 Transmit Byte Count Byte 3 0D3h, 193h, 253h, 313h 5 TBC29 0 4 TBC28 0 3 TBC27 0 2 TBC26 0 1 TBC25 0 0 TBC24 0
Bits 0 to 7: Transmit Byte Count (TBC[31:24]). These thirty-two bits indicate the number of packet bytes inserted in the outgoing data stream.
105 of 181
DS33Z44 Quad Ethernet Mapper Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0 LI.TMEI Transmit Manual Error Insertion 0D4h, 194h, 254h, 314h 5 0 4 0 3 0 2 0 1 0 0 TMEI 0
Bit 0: Transmit Manual Error Insertion. A zero to one transition will insert a single error in the Transmit direction.
Register Name: Register Description: Register Address: Bit # Name Default 7 0
LI.THPMUU Serial Interface Transmit HDLC PMU Update Register 0D6h, 196h, 256h, 316h 6 0 5 0 4 0 3 0 2 0 1 0 0 TPMUU 0
Bit 0: Transmit PMU Update. This signal causes the transmit cell/packet processor block performance monitoring registers (counters) to be updated. A 0 to 1 transition causes the performance monitoring registers to be updated with the latest data, and the counters reset (0 or 1). This update updates performance monitoring counters for the Serial Interface.
Register Name: Register Description: Register Address: Bit # Name Default 7 0
LI.THPMUS Serial Interface Transmit HDLC PMU Update Status Register 0D7h, 197h, 257h, 317h 6 0 5 0 4 0 3 0 2 0 1 0 0 TPMUS 0
Bit 0: Transmit PMU Update Status. This bit is set when the Transmit PMU Update is completed. This bit is cleared when TPMUU is reset.
106 of 181
DS33Z44 Quad Ethernet Mapper
9.5.4
X.86 Registers
X.86 Transmit and common registers are used to control the operation of the X.86 encoder and decoder. Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0 LI.TX86EDE X.86 Encoding Decoding Enable 0D8h, 198h, 258h, 318h 5 0 4 0 3 0 2 0 1 0 0 X86ED 0
Bit 0: X.86 Encoding Decoding. If this bit is set to 1, X.86 encoding and decoding is enabled for the Transmit and Receive paths. The MAC Frame is encapsulated in the X.86 Frame for Transmit and the X.86 headers are checked for in the received data. If X.86 functionality is selected, the X.86 receiver byte boundary is provided by the RBSYNCn signal and the DS33Z44 provides the transmit byte synchronization TBSYNCn. No HDLC encapsulation is performed. Register Name: Register Description: Register Address: Bit # Name Default 7 X86TRA7 0 LI.TRX86A Transmit Receive X.86 Address 0D9h, 199h, 259h, 319h 6 X86TRA6 0 5 X86TRA5 0 4 X86TRA4 0 3 X86TRA3 0 2 X86TRA2 1 1 X86TRA1 0 0 X86TRA0 0
Bits 0 to 7: X86 Transmit Receive Address (X86TRA0-7). This is the address field for the X.86 transmitter and for the receiver. The register default value is 0x04.
Register Name: Register Description: Register Address: Bit # Name Default 7 X86TRC7 0
LI.TRX8C Transmit Receive X.86 Control 0DAh, 19Ah, 25Ah, 31Ah 6 X86TRC6 0 5 X86TRC5 0 4 X86TRC4 0 3 X86TRC3 0 2 X86TRC2 0 1 X86TRC1 1 0 X86TRC0 1
Bits 0 to 7: X86 Transmit Receive Control (X86TRC0-7). This is the control field for the X.86 transmitter and expected value for the receiver. The register is reset to 0x03. Register Name: Register Description: Register Address: Bit # Name Default 7
TRSAPIH7
LI.TRX86SAPIH Transmit Receive X.86 SAPIH 0DBh, 19Bh, 25Bh, 31Bh 6
TRSAPIH6
5
TRSAPIH5
4
TRSAPIH4
3
TRSAPIH3
2
TRSAPIH2
1
TRSAPIH1
0
TRSAPIH0
1
1
1
1
1
1
1
0
Bits 0 to 7: X86 Transmit Receive Address (TRSAPIH0-7). This is the address field for the X.86 transmitter and expected for the receiver. The register is reset to 0xfe.
107 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: Bit # Name Default 7
TRSAPIL7
LI.TRX86SAPIL Transmit Receive X.86 SAPIL 0DCh, 19Ch, 25Ch, 31Ch 6
TRSAPIL6
5
TRSAPIL5
4
TRSAPIL4
3
TRSAPIL3
2
TRSAPIL2
1
TRSAPIL1
0
TRSAPIL0
0
0
0
0
0
0
0
1
Bits 0 to 7: X86 Transmit Receive Control (TRSAPIL0-7). This is the address field for the X.86 transmitter and expected value for the receiver. The register is reset to 0x01.
Register Name: Register Description: Register Address: Bit # Name Default 7 CIRE 0 6 CIR6 0
LI.CIR Committed Information Rate 0DDh, 19Dh, 25Dh, 31Dh 5 CIR5 0 4 CIR4 0 3 CIR3 0 2 CIR2 0 1 CIR1 0 0 CIR0 1
Bit 7: Committed Information Rate Enable (CIRE). Set this bit to 1 to enable the Committed Information Rate Controller feature. Bits 0 to 6: Committed Information Rate (CIR0-6). These bits provide the value for the committed information rate. The value is multiplied by 500 Kbit/s to get the CIR value. The user must ensure that the CIR value is less than or equal to the maximum Serial Interface transmit rate. The valid range is from 1 to 104. Any values outside this range will result in unpredictable behavior. Note that a value of 104 translates to a 52 Mbit/s line rate. Hence if the CIR is above the line rate, the rate is not restricted by the CIR. For instance - if using a T1 line and the CIR is programmed with a value of 104, it has no effect in restricting the rate.
108 of 181
DS33Z44 Quad Ethernet Mapper
9.5.5
Receive Serial Interface
Serial Receive Registers are used to control the HDLC Receiver associated with each Serial Interface. Note that throughout this document HDLC Processor is also referred to as "Packet Processor." The receive packet processor block has seventeen registers.
9.5.5.1 Register Bit Descriptions Register Name: LI.RSLCR Register Description: Receive Serial Interface Configuration Register Register Address: 100h, 1C0h, 280h, 340h Bit # Name Default 7 0 6 0 5 0 4 0 3 0 2 0 1 0 0 RDENPLT 0
Bit 0: Receive Data Enable Polarity. Receive Data Enable Polarity. If set to 1, RDENn Low enables reception of the bit.
Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0
LI.RPPCL Receive Packet Processor Control Low Register 101h, 1C1h, 281h, 341h 5 RFPD 0 4 RF16 0 3 RFED 0 2 RDD 0 1 RBRE 0 0 RCCE 0
Bit 5: Receive FCS Processing Disable (RFPD). When equal to 0, FCS processing is performed and FCS is appended to packets. When set to 1, FCS processing is disabled (the packets do not have an FCS appended). In X.86 mode, FCS processing is always enabled. Bit 4: Receive FCS-16 Enable (RF16). When 0, the error checking circuit uses a 32-bit FCS. When 1, the error checking circuit uses a 16-bit FCS. This bit is ignored when FCS processing is disabled. In X.86 mode, the FCS is always 32 bits. Bit 3: Receive FCS Extraction Disable (RFED). When 0, the FCS bytes are discarded. When 1, the FCS bytes are passed on. This bit is ignored when FCS processing is disabled. In X.86 mode, FCS bytes are discarded. Bit 2: Receive Descrambling Disable (RDD). When equal to 0, X +1 descrambling is performed. When set to 1, descrambling is disabled. Bit 1: Receive Bit Reordering Enable (RBRE). When equal to 0, reordering is disabled and the first bit received is expected to be the MSB DT [7] of the byte. When set to 1, bit reordering is enabled and the first bit received is expected to be the LSB DT [0] of the byte. Note that function is controlled by the BREO in Hardware Mode. Bit 0: Receive Clear-Channel Enable (RCCE). When equal to 0, packet processing is enabled. When set to 1, the device is in clear-channel mode and all packet-processing functions except descrambling and bit reordering are disabled.
43
109 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: Bit # Name Default 7 RMX7 1 6 RMX6 1
LI.RMPSCL Receive Maximum Packet Size Control Low Register 102h, 1C2h, 282h, 342h 5 RMX5 1 4 RMX4 0 3 RMX3 0 2 RMX2 0 1 RMX1 0 0 RMX0 0
Bits 0 to 7: Receive Maximum Packet Size (RMX [7:0]). Eight bits of a 16-bit value. Register description below. Register Name: Register Description: Register Address: Bit # Name Default 7 RMX15 0 6 RMX14 0 LI.RMPSCH Receive Maximum Packet Size Control High Register 103h, 1C3h, 283h, 343h 5 RMX13 0 4 RMX12 0 3 RMX11 0 2 RMX10 1 1 RMX9 1 0 RMX8 1
Bits 15 to 0: Receive Maximum Packet Size (RMX [15:8]).These sixteen bits indicate the maximum allowable packet size in bytes. The size includes the FCS bytes, but excludes bit/byte stuffing. Note: If the maximum packet size is less than the minimum packet size, all packets are discarded. When packet processing is disabled, these sixteen bits indicate the "packet" size the incoming data is to be broken into. The maximum packet size allowable is 2016 bytes plus the FCS bytes. Any values programmed that are greater than 2016 + FCS will have the same effect as 2016+ FCS value. In X.86 mode, the X.86 encapsulation bytes are included in maximum size control.
Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0
LI.RPPSR Receive Packet Processor Status Register 104h, 1C4h, 284h, 344h 5 0 4 0 3 0 2 REPC 0 1 RAPC 0 0 RSPC 0
Bit 2: Receive FCS Errored Packet Count (REPC). This read-only bit indicates that the receive FCS errored packet count is non-zero. Bit 1: Receive Aborted Packet Count (RAPC). This read-only bit indicates that the receive aborted packet count is non-zero. Bit 0: Receive Size Violation Packet Count (RSPC). This read-only bit indicates that the receive size violation packet count is non-zero.
110 of 181
DS33Z44 Quad Ethernet Mapper Register Name: Register Description: Register Address: Bit # Name Default 7 REPL 0 6 RAPL 0 LI.RPPSRL Receive Packet Processor Status Register Latched 105h, 1C5h, 285h, 345h 5 RIPDL 0 4 RSPDL 0 3 RLPDL 0 2 REPCL 0 1 RAPCL 0 0 RSPCL 0
Bit 7: Receive FCS Errored Packet Latched (REPL). This bit is set when a packet with an errored FCS is detected. Bit 6: Receive Aborted Packet Latched (RAPL). This bit is set when a packet with an abort indication is detected. Bit 5: Receive Invalid Packet Detected Latched (RIPDL). This bit is set when a packet with a non-integer number of bytes is detected. Bit 4: Receive Small Packet Detected Latched (RSPDL). This bit is set when a packet smaller than the minimum packet size is detected. Bit 3: Receive Large Packet Detected Latched (RLPDL). This bit is set when a packet larger than the maximum packet size is detected. Bit 2: Receive FCS Errored Packet Count Latched (REPCL). This bit is set when the REPC bit in the RPPSR register transitions from zero to one. Bit 1: Receive Aborted Packet Count Latched (RAPCL). This bit is set when the RAPC bit in the RPPSR register transitions from zero to one. Bit 0: Receive Size Violation Packet Count Latched (RSPCL). This bit is set when the RSPC bit in the RPPSR register transitions from zero to one.
111 of 181
DS33Z44 Quad Ethernet Mapper Register Name: Register Description: Register Address: Bit # Name Default 7 REPIE 0 6 RAPIE 0 LI.RPPSRIE Receive Packet Processor Status Register Interrupt Enable 106h, 1C6h, 286h, 346h 5 RIPDIE 0 4 RSPDIE 0 3 RLPDIE 0 2 REPCIE 0 1 RAPCIE 0 0 RSPCIE 0
Bit 7: Receive FCS Errored Packet Interrupt Enable (REPIE). This bit enables an interrupt if the REPL bit in the LI.RPPSRL register is set. 0 = Interrupt disabled 1 = Interrupt enabled Bit 6: Receive Aborted Packet Interrupt Enable (RAPIE). This bit enables an interrupt if the RAPL bit in the LI.RPPSRL register is set. 0 = Interrupt disabled 1 = Interrupt enabled Bit 5: Receive Invalid Packet Detected Interrupt Enable (RIPDIE). This bit enables an interrupt if the RIPDL bit in the LI.RPPSRL register is set. 0 = Interrupt disabled 1 = Interrupt enabled Bit 4: Receive Small Packet Detected Interrupt Enable (RSPDIE). This bit enables an interrupt if the RSPDL bit in the LI.RPPSRL register is set. 0 = Interrupt disabled 1 = Interrupt enabled Bit 3: Receive Large Packet Detected Interrupt Enable (RLPDIE). This bit enables an interrupt if the RLPDL bit in the LI.RPPSRL register is set. 0 = Interrupt disabled 1 = Interrupt enabled Bit 2: Receive FCS Errored Packet Count Interrupt Enable (REPCIE). This bit enables an interrupt if the REPCL bit in the LI.RPPSRL register is set. Must be set low when the packets do not have an FCS appended. 0 = Interrupt disabled 1 = Interrupt enabled Bit 1: Receive Aborted Packet Count Interrupt Enable (RAPCIE). This bit enables an interrupt if the RAPCL bit in the LI.RPPSRL register is set. 0 = Interrupt disabled 1 = Interrupt enabled Bit 0: Receive Size Violation Packet Count Interrupt Enable (RSPCIE). This bit enables an interrupt if the RSPCL bit in the LI.RPPSRL register is set. 0 = Interrupt disabled 1 = Interrupt enabled
112 of 181
DS33Z44 Quad Ethernet Mapper Register Name: Register Description: Register Address: Bit # Name Default 7 RPC7 0 6 RPC6 0 LI.RPCB0 Receive Packet Count Byte 0 Register 108h, 1C8h, 288h, 348h 5 RPC5 0 4 RPC4 0 3 RPC3 0 2 RPC2 0 1 RPC1 0 0 RPC0 0
Bits 0 to 7: Receive Packet Count (RPC [7:0]). Eight bits of a 24-bit value. Register description below. Register Name: Register Description: Register Address: Bit # Name Default 7 RPC15 0 6 RPC14 0 LI.RPCB1 Receive Packet Count Byte 1 Register 109h, 1C9h, 289h, 349h 5 RPC13 0 4 RPC12 0 3 RPC11 0 2 RPC10 0 1 RPC09 0 0 RPC08 0
Bits 0 to 7: Receive Packet Count (RPC [15:8]). Eight bits of a 24-bit value. Register description below.
Register Name: Register Description: Register Address: Bit # Name Default 7 RPC23 0 6 RPC22 0
LI.RPCB2 Receive Packet Count Byte 2 Register 10Ah, 1CAh, 28Ah, 34Ah 5 RPC21 0 4 RPC20 0 3 RPC19 0 2 RPC18 0 1 RPC17 0 0 RPC16 0
Bits 0 to 7: Receive Packet Count (RPC [23:16]). These twenty-four bits indicate the number of packets stored in the receive FIFO without an abort indication. Note: Packets discarded due to system loopback or an overflow condition are included in this count. This register is valid when clear channel is enabled.
113 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: Bit # Name Default 7 RFPC7 0 6 RFPC6 0
LI.RFPCB0 Receive FCS Errored Packet Count Byte 0 Register 10Ch, 1CCh, 28Ch, 34Ch 5 RFPC5 0 4 RFPC4 0 3 RFPC3 0 2 RFPC2 0 1 RFPC1 0 0 RFPC0 0
Bits 0 to 7: Receive FCS Errored Packet Count (RFPC[7:0]). Eight bits of a 24-bit value. Register description below. Register Name: Register Description: Register Address: Bit # Name Default 7 RFPC15 0 LI.RFPCB1 Receive FCS Errored Packet Count Byte 1 Register 10Dh, 1CDh, 28Dh, 34Dh 6 RFPC14 0 5 RFPC13 0 4 RFPC12 0 3 RFPC11 0 2 RFPC10 0 1 RFPC9 0 0 RFPC8 0
Bits 0 to 7: Receive FCS Errored Packet Count (RFPC[15:8]). Eight bits of a 24-bit value. Register description below.
Register Name: Register Description: Register Address: Bit # Name Default 7 RFPC23 0
LI.RFPCB2 Receive FCS Errored Packet Count Byte 2 Register 10Eh, 1CEh, 28Eh, 34Eh 6 RFPC22 0 5 RFPC21 0 4 RFPC20 0 3 RFPC19 0 2 RFPC18 0 1 RFPC17 0 0 RFPC16 0
Bits 0 to 7: Receive FCS Errored Packet Count (RFPC[23:16]). These twenty-four bits indicate the number of packets received with an FCS error. The byte count for these packets is included in the receive aborted byte count register REBCR.
114 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: Bit # Name Default 7 RAPC7 0 6 RAPC6 0
LI.RAPCB0 Receive Aborted Packet Count Byte 0 Register 110h, 1D0h, 290h, 350h 5 RAPC5 0 4 RAPC4 0 3 RAPC3 0 2 RAPC2 0 1 RAPC1 0 0 RAPC0 0
Bits 0 to 7: Receive Aborted Packet Count (RAPC [7:0]). Eight bits of a 24-bit value. Register description below.
Register Name: Register Description: Register Address: Bit # Name Default 7 RAPC15 0
LI.RAPCB1 Receive Aborted Packet Count Byte 1 Register 111h, 1D1h, 291h, 351h 6 RAPC14 0 5 RAPC13 0 4 RAPC12 0 3 RAPC11 0 2 RAPC10 0 1 RAPC9 0 0 RAPC8 0
Bits 0 to 7: Receive Aborted Packet Count (RAPC[15:8]). Eight bits of a 24-bit value. Register description below.
Register Name: Register Description: Register Address: Bit # Name Default 7 RAPC23 0
LI.RAPCB2 Receive Aborted Packet Count Byte 2 Register 112h, 1D2h, 292h, 352h 6 RAPC22 0 5 RAPC21 0 4 RAPC20 0 3 RAPC19 0 2 RAPC18 0 1 RAPC17 0 0 RAPC16 0
Bits 0 to 7: Receive Aborted Packet Count (RAPC [23:16]). The twenty-four bit value from these three registers indicates the number of packets received with a packet abort indication. The byte count for these packets is included in the receive aborted byte count register REBCR.
115 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: Bit # Name Default 7 RSPC7 0 6 RSPC6 0
LI.RSPCB0 Receive Size Violation Packet Count Byte 0 Register 114h, 1D4h, 294h, 354h 5 RSPC5 0 4 RSPC4 0 3 RSPC3 0 2 RSPC2 0 1 RSPC1 0 0 RSPC0 0
Bits 0 to 7: Receive Size Violation Packet Count (RSPC [7:0]). Eight bits of a 24-bit value. Register description below.
Register Name: Register Description: Register Address: Bit # Name Default 7 RSPC15 0
LI.RSPCB1 Receive Size Violation Packet Count Byte 1 Register 115h, 1D5h, 295h, 355h 6 RSPC14 0 5 RSPC13 0 4 RSPC12 0 3 RSPC11 0 2 RSPC10 0 1 RSPC9 0 0 RSPC8 0
Bits 0 to 7: Receive Size Violation Packet Count (RSPC [15:8]). Eight bits of a 24-bit value. Register description below. Register Name: Register Description: Register Address: Bit # Name Default 7 RSPC23 0 LI.RSPCB2 Receive Size Violation Packet Count Byte 2 Registers 116h, 1D6h, 296h, 356h 6 RSPC22 0 5 RSPC21 0 4 RSPC20 0 3 RSPC19 0 2 RSPC18 0 1 RSPC17 0 0 RSPC16 0
Bits 0 to 7: Receive Size Violation Packet Count (RSPC [23:16]). These twenty-four bits indicate the number of packets received with a packet size violation (below minimum, above maximum, or non-integer number of bytes). The byte count for these packets is included in the receive aborted byte count register REBCR.
116 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: Bit # Name Default 7 RBC7 0 6 RBC6 0
LI.RBC0 Receive Byte Count 0 Register 118h, 1D8h, 298h, 358h 5 RBC5 0 4 RBC4 0 3 RBC3 0 2 RBC2 0 1 RBC1 0 0 RBC0 0
Bits 0 to 7: Receive Byte Count (RBC [7:0]). Eight bits of a 32-bit value. Register description below.
Register Name: Register Description: Register Address: Bit # Name Default 7 RBC15 0 6 RBC14 0
LI.RBC1 Receive Byte Count 1 Register 119h, 1D9h, 299h, 359h 5 RBC13 0 4 RBC12 0 3 RBC11 0 2 RBC10 0 1 RBC9 0 0 RBC8 0
Bits 0 to 7: Receive Byte Count (RBC [15:8]). Eight bits of a 32-bit value. Register description below.
Register Name: Register Description: Register Address: Bit # Name Default 7 RBC23 0 6 RBC22 0
LI.RBC2 Receive Byte Count 2 Register 11Ah, 1DAh, 29Ah, 35Ah 5 RBC21 0 4 RBC20 0 3 RBC19 0 2 RBC18 0 1 RBC17 0 0 RBC16 0
Bits 0 to 7: Receive Byte Count (RBC [23:16]). Eight bits of a 32-bit value. Register description below.
Register Name: Register Description: Register Address: Bit # Name Default 7 RBC31 0 6 RBC30 0
LI.RBC3 Receive Byte Count 3 Register 11Bh, 1DBh, 29Dh, 35Bh 5 RBC29 0 4 RBC28 0 3 RBC27 0 2 RBC26 0 1 RBC25 0 0 RBC24 0
Bits 0 to 7: Receive Byte Count (RBC [31:24]). These thirty-two bits indicate the number of bytes contained in packets stored in the receive FIFO without an abort indication. Note: Bytes discarded due to FCS extraction, system loopback, FIFO reset, or an overflow condition may be included in this count.
117 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: Bit # Name Default 7 REBC7 0 6 REBC6 0
LI.RAC0 Receive Aborted Byte Count 0 Register 11Ch, 1DCh, 29Ch, 35Ch 5 REBC5 0 4 REBC4 0 3 REBC3 0 2 REBC2 0 1 REBC1 0 0 REBC0 0
Bits 0 - 7: Receive Aborted Byte Count (RBC [7:0]) - Eight bits of a 32-bit value. Register description bellow. Register Name: Register Description: Register Address: Bit # Name Default 7 REBC15 0 LI.RAC1 Receive Aborted Byte Count 1 Register 11Dh, 1DDh, 29Dh, 35Dh 6 REBC14 0 5 REBC13 0 4 REBC12 0 3 REBC11 0 2 REBC10 0 1 REBC9 0 0 REBC8 0
Bits 0 to 7: Receive Aborted Byte Count (RBC [15:8]). Eight bits of a 32-bit value. Register description bellow.
Register Name: Register Description: Register Address: Bit # Name Default 7 REBC23 0
LI.RAC2 Receive Aborted Byte Count 2 Register 11Eh, 1DEh, 29Eh, 35Eh 6 REBC22 0 5 REBC21 0 4 REBC20 0 3 REBC19 0 2 REBC18 0 1 REBC17 0 0 REBC16 0
Bits 0 to 7: Receive Aborted Byte Count (RBC [16:23]). Eight bits of a 32-bit value. Register description bellow. Register Name: Register Description: Register Address: Bit # Name Default 7 REBC31 0 LI.RAC3 Receive Aborted Byte Count 3 Register 11Fh, 1DFh, 29Fh, 35Fh 6 REBC30 0 5 REBC29 0 4 REBC28 0 3 REBC27 0 2 REBC26 0 1 REBC25 0 0 REBC24 0
Bits 0 to 7: Receive Aborted Byte Count (REBC[31:24]). These thirty-two bits indicate the number of bytes contained in packets stored in the receive FIFO with an abort indication. Note: Bytes discarded due to FCS extraction, system loopback, FIFO reset, or an overflow condition may be included in this count.
118 of 181
DS33Z44 Quad Ethernet Mapper Register Name: Register Description: Register Address: Bit # Name Default 7 0 LI.RHPMUU Serial Interface Receive HDLC PMU Update Register 120h, 1E0h, 2A0h, 360h 6 0 5 0 4 0 3 0 2 0 1 0 0 RPMUU 0
Bit 0: Receive PMU Update. This signal causes the receive cell/packet processor block performance monitoring registers (counters) to be updated. A 0 to 1 transition causes the performance monitoring registers to be updated with the latest data, and the counters reset (0 or 1). This update updates performance monitoring counters for the Serial Interface. Register Name: Register Description: Register Address: Bit # Name Default 7 0 LI.RHPMUS Serial Interface Receive HDLC PMU Update Status Register 121h, 1E1h, 2A1h, 361h 6 0 5 0 4 0 3 0 2 0 1 0 0 RPMUUS 0
Bit 0: Receive PMU Update Status. This bit is set when the Transmit PMU Update is completed. This bit is cleared when RPMUU is set to 0.
Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0
LI.RX86S Receive X.86 Latched Status Register 122h, 1E2h, 2A2h, 362h 5 0 4 0 3 SAPIHNE 0 2 SAPILNE 0 1 CNE 0 0 ANE 0
Bit 3: SAPI High is Not Equal to LI.TRX86SAPIH Latched Status. This latched status bit is set if SAPIH is not equal to LI.TRX86SAPIH. This latched status bit is cleared upon read. Bit 2: SAPI Low is Not Equal to LI.TRX86SAPIL Latched Status. This latched status bit is set if SAPIL is not equal to LI.TRX86SAPIL. This latched status bit is cleared upon read. Bit 1: Control is Not Equal to LI.TRX8C. This latched status bit is set if the control field is not equal to LI.TRX8C. This latched status bit is cleared upon read. Bit 0: Address is Not Equal to LI.TRX86A. This latched status bit is set if the X.86 Address field is not equal to LI.TRX86A. This latched status bit is cleared upon read.
119 of 181
DS33Z44 Quad Ethernet Mapper Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0 LI.RX86LSIE Receive X.86 Interrupt Enable 123h, 1E3h, 2A3h, 363h 5 0 4 0 3 SAPINE01IM 0 2 SAPINEFEIM 0 1 CNE3LIM 0 0 ANE4IM 0
Bit 3: SAPI Octet Not Equal to LI.TRX86SAPIH Interrupt Enable. If this bit is set to 1, LI.RX86S.SAPIHNE will generate an interrupt. Bit 2: SAPI Octet Not Equal to LI.TRX86SAPIL Interrupt Enable. If this bit is set to 1, LI.RX86S.SAPILNE will generate an interrupt. Bit 1: Control Not Equal to LI.TRX8C Interrupt Enable. If this bit is set to 1, LI.RX86S.CNE will generate an interrupt. Bit 0: Address Not Equal to LI.TRX86A Interrupt Enable. If this bit is set to 1, LI.RX86S.ANE will generate an interrupt.
Register Name: Register Description: Register Address: Bit # Name Default 7 TQLT7 0 6 TQLT6 0
LI.TQLT Serial Interface Transmit Queue Low Threshold (Watermark) 124h, 1E4h, 2A4h, 364h 5 TQLT5 0 4 TQLT4 0 3 TQLT3 0 2 TQLT2 0 1 TQLT1 0 0 TQLT0 0
Bits 0 to 7: Transmit Queue Low Threshold (TQLT[0:7]). The transmit queue low threshold for the connection, in increments of 32 packets of 2048 bytes each. The value of this register is multiplied by 32 x 2048 bytes to determine the byte location of the threshold. Note that the transmit queue is for data that was received from the Serial Interface to be sent to the Ethernet Interface.
120 of 181
DS33Z44 Quad Ethernet Mapper Register Name: Register Description: Register Address: Bit # Name Default 7 TQHT7 0 6 TQHT6 0 LI.TQHT Serial Interface Transmit Queue High Threshold (Watermark) 125h, 1E5h, 2A5h, 365h 5 TQHT5 0 4 TQHT4 0 3 TQHT3 0 2 TQHT2 0 1 TQHT1 0 0 TQHT0 0
Bits 0 to 7: Transmit Queue High Threshold (TQHT[0:7]). The transmit queue high threshold for the connection, in increments of 32 packets of 2048 bytes each. The value of this register is multiplied by 32 x 2048 bytes to determine the byte location of the threshold. Note that the transmit queue is for data that was received from the Serial Interface to be sent to the Ethernet Interface. Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0 LI.TQTIE Serial Interface Transmit Queue Cross Threshold Interrupt Enable 126h, 1E6h, 2A6h, 366h 5 0 4 0 3 TFOVFIE 0 2 TQOVFIE 0 1 TQHTIE 0 0 TQLTIE 0
Bit 3: Transmit FIFO Overflow for Connection Interrupt Enable. If this bit is set, the watermark interrupt is enabled for TFOVFLS. Bit 2: Transmit Queue Overflow for Connection Interrupt Enable. If this bit is set, the watermark interrupt is enabled for TQOVFLS. Bit 1: Transmit Queue for Connection High Threshold Interrupt Enable. If this bit is set, the watermark interrupt is enabled for TQHTS. Bit 0: Transmit Queue for Connection Low Threshold Interrupt Enable. If this bit is set, the watermark interrupt is enabled for TQLTS. Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0 LI.TQCTLS Serial Interface Transmit Queue Cross Threshold Latched Status 127h, 1E7h, 2A7h, 367h 5 0 4 0 3 TFOVFLS 0 2 TQOVFLS 0 1 TQHTLS 0 0 TQLTLS 0
Bit 3: Transmit Queue FIFO Overflowed Latched Status. This bit is set if the transmit queue FIFO has overflowed. This register is cleared after a read. This FIFO is for data to be transmitted from the HDLC to be sent to the SDRAM. Bit 2: Transmit Queue Overflow Latched Status. This bit is set if the transmit queue has overflowed. This register is cleared after a read. Bit 1: Transmit Queue for Connection Exceeded High Threshold Latched Status. This bit is set if the transmit queue crosses the high watermark. This register is cleared after a read. Bit 0: Transmit Queue for Connection Exceeded Low Threshold Latched Status. This bit is set if the transmit queue crosses the low watermark. This register is cleared after a read.
121 of 181
DS33Z44 Quad Ethernet Mapper
9.6
Ethernet Interface Registers
The Ethernet Interface registers are used to configure RMII/MII bus operation and establish the MAC parameters as required by the user. The MAC Registers cannot be addressed directly from the Processor port. The registers below are used to perform indirect read or write operations to the MAC registers. The MAC Status Registers are shown in Table 9-7. Accessing the MAC Registers is described in the Section 8.14.
9.6.1
Ethernet Interface Register Bit Descriptions
SU.MACRADL MAC Read Address Low Register 140h, 200h, 2C0h, 380h 6 MACRA6 0 5 MACRA5 0 4 MACRA4 0 3 MACRA3 0 2 MACRA2 0 1 MACRA1 0 0 MACRA0 0
Register Name: Register Description: Register Address: Bit # Name 7 MACRA7 0
Bits 0 to 7: MAC Read Address (MACRA0-7). Low byte of the MAC address. Used only for read operations. Register Name: Register Description: Register Address: Bit # Name 7 MACRA15 0 SU.MACRADH MAC Read Address High Register 141h, 201h, 2C1h, 381h 6 MACRA14 0 5 MACRA13 0 4 MACRA12 0 3 MACRA11 0 2 MACRA10 0 1 MACRA9 0 0 MACRA8 0
Bits 0 to 7: MAC Read Address (MACRA8-15). High byte of the MAC address. Used only for read operations.
Register Name: Register Description: Register Address: Bit # Name 7 MACRD7 0
SU.MACRD0 MAC Read Data Byte 0 142h, 202h, 2C2h, 382h 6 MACRD6 0 5 MACRD5 0 4 MACRD4 0 3 MACRD3 0 2 MACRD2 0 1 MACRD1 0 0 MACRD0 0
Bits 0 to 7: MAC Read Data (MACRD0-7). One of four bytes of data read from the MAC. Valid after a read command has been issued and the SU.MACRWC.MCS bit is zero.
122 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: Bit # Name 7 MACRD15 0
SU.MACRD1 MAC Read Data Byte 1 143h, 203h, 2C3h, 383h 6 MACRD14 0 5 MACRD13 0 4 MACRD12 0 3 MACRD11 0 2 MACRD10 0 1 MACRD9 0 0 MACRD8 0
Bits 0 to 7: MAC Read Data 1 (MACRD8-15). One of four bytes of data read from the MAC. Valid after a read command has been issued and the SU.MACRWC.MCS bit is zero.
Register Name: Register Description: Register Address: Bit # Name 7 MACRD23 0
SU.MACRD2 MAC Read Data Byte 2 144h, 204h, 2C4h, 384h 6 MACRD22 0 5 MACRD21 0 4 MACRD20 0 3 MACRD19 0 2 MACRD18 0 1 MACRD17 0 0 MACRD16 0
Bits 0 to 7: MAC Read Data 2 (MACRD16-23). One of four bytes of data read from the MAC. Valid after a read command has been issued and the SU.MACRWC.MCS bit is zero.
Register Name: Register Description: Register Address: Bit # Name 7 MACRD31 0
SU.MACRD3 MAC Read Data Byte 3 145h, 205h, 2C5h, 385h 6 MACRD30 0 5 MACRD29 0 4 MACRD28 0 3 MACRD27 0 2 MACRD26 0 1 MACRD25 0 0 MACRD24 0
Bits 0 to 7: MAC Read Data 3 (MACRD24-31). One of four bytes of data read from the MAC. Valid after a read command has been issued and the SU.MACRWC.MCS bit is zero.
Register Name: Register Description: Register Address: Bit # Name 7 MACWD7 0
SU.MACWD0 MAC Write Data Byte 0 146h, 206h, 2C6h, 386h 6 MACWD6 0 5 MACWD5 0 4 MACWD4 0 3 MACWD3 0 2 MACWD2 0 1 MACWD1 0 0 MACWD0 0
Bits 0 to 7: MAC Write Data 0 (MACWD0-7). One of four bytes of data to be written to the MAC. Data has been written after a write command has been issued and the SU.MACRWC.MCS bit is zero.
123 of 181
DS33Z44 Quad Ethernet Mapper Register Name: Register Description: Register Address: Bit # Name SU.MACWD1 MAC Write Data Byte 1 147h, 207h, 2C7h, 387h
7 6 5 4 3 2 1 0 MACWD15 MACWD14 MACWD13 MACWD12 MACWD11 MACWD10 MACWD09 MACWD08 0 0 0 0 0 0 0 0
Bits 0 to 7: MAC Write Data 1 (MACWD8-15). One of four bytes of data to be written to the MAC. Data has been written after a write command has been issued and the SU.MACRWC.MCS bit is zero.
Register Name: Register Description: Register Address: Bit # Name
SU.MACWD2 MAC Write Data Byte 2 148h, 208h, 2C8h, 388h
7 6 5 4 3 2 1 0 MACWD23 MACWD22 MACWD21 MACWD20 MACWD19 MACWD18 MACWD17 MACWD16 0 0 0 0 0 0 0 0
Bits 0 to 7: MAC Write Data 2 (MACWD16-23). One of four bytes of data to be written to the MAC. Data has been written after a write command has been issued and the SU.MACRWC.MCS bit is zero.
Register Name: Register Description: Register Address: Bit # Name 7 MACD31 0
SU.MACWD3 MAC Write Data Byte 3 149h, 209h, 2C9h, 389h 6 MACD30 0 5 MACD29 0 4 MACD28 0 3 MACD27 0 2 MACD26 0 1 MACD25 0 0 MACD24 0
Bits 0 to 7: MAC Write Data 3 (MACD24-31). One of four bytes of data to be written to the MAC. Data has been written after a write command has been issued and the SU.MACRWC.MCS bit is zero.
Register Name: Register Description: Register Address: Bit # Name 7 MACAW 7 0
SU.MACAWL MAC Address Write Low 14Ah, 20Ah, 2CAh, 38Ah 6 MACAW 6 0 5 MACAW 5 0 4 MACAW4 0 3 MACAW3 0 2 MACAW2 0 1 MACAW1 0 0 MACAW0 0
Bits 0 to 7: MAC Write Address (MACAW0-7). Low byte of the MAC address. Used only for write operations.
124 of 181
DS33Z44 Quad Ethernet Mapper Register Name: Register Description: Register Address: Bit # Name SU.MACAWH MAC Address Write High 14Bh, 20Bh, 2CBh, 38Bh 1 MACAW9 0 0 MACAW8 0
7 6 5 4 3 2 MACAW 15 MACAW 14 MACAW 13 MACAW12 MACAW11 MACAW10 0 0 0 0 0 0
Bits 0 to 7: MAC Write Address (MACAW8-15). High byte of the MAC address. Used only for write operations.
Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0
SU.MACRWC MAC Read Write Command Status 14Ch, 20Ch, 2CCh, 38Ch 5 0 4 0 3 0 2 0 1 MCRW 0 0 MCS 0
Bit 1: MAC Command RW. If this bit is written to 1, a read is performed from the MAC. If this bit is written to 0, a write operation is performed. Address information for write operations must be located in SU.MACAWH and SU.MACAWL. Address information for read operations must be located in SU.MACRADH and SU.MACRADL. The user must also write a 1 to the MCS bit, and the DS33Z44 will clear MCS when the operation is complete. Bit 0: MAC Command Status. Setting MCS in conjunction with MCRW will initiate a read or write to the MAC registers. Upon completion of the read or write this bit is cleared. Once a read or write command has been initiated the host must poll this bit to see when the operation is complete. Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0 SU.RSTPD Ethernet Interface Reset and Power-Down Register 14Eh, 20Eh, 2CEh, 38Eh 5 0 4 0 3 0 2 0 1 RESET 0 0 0
This register is common to the Transmit and Receive Ethernet Interfaces. Bit 1: Reset. If this bit set high, the Data Path and Control and Status for this port are reset. The Ethernet Interface is held in reset as long as this bit is high. This bit must be high for a minimum of 200 nsec for the reset to be effective.
125 of 181
DS33Z44 Quad Ethernet Mapper Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0 SU.LPBK Ethernet Interface Loopback Control Register 14Fh, 20Fh, 2CFh, 38Fh 5 0 4 0 3 0 2 0 1 0 0 QLP 0
Bit 0: Queue Loopback Enable. If this bit is set to 1, data from the Ethernet Interface receive queue is looped back to the transmit queue. Buffered data from the serial interface will remain until the loopback is removed.
Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0
SU.GCR Ethernet Interface General Control Register 150h, 210h, 2D0h, 390h 5 0 4 0 3 CRCS 0 2 H10S 0 1 ATFLOW 1 0 JAME 0
Bit 3: CRCS. If this bit is zero (default), the MAC or Ethernet CRC is stripped before the data is encapsulated and transmitted. If this bit is set to 1, the CRC is not stripped before transport, it is recalculated and added to the received data that arrives on the WAN before retransmission. It is assumed that CRC has been stripped before transport. Note that the maximum packet size supported by the Ethernet interface is still 2016 (this includes the 4 bytes of CRC). Bit 2: H10S. If this bit is set the MAC will operate at 100 Mbit/s. If this bit is zero, the MAC will operate at 10 Mbit/s. This bit controls the 10/100 selection for RMII and DCE Mode. In DTE and MII mode, the MAC determines the data rate from the incoming TX_CLKn and RX_CLKn. Bit 1: Automatic Flow Control Enable. If this bit is set to 1, automatic flow control is enabled based on the connection receive queue size and high watermarks. Pause frames are sent automatically in full duplex mode. The pause time must be programmed through SU.MACFCR. The jam sequence will not be sent automatically in half duplex mode unless the JAME bit is set. This bit is applicable only in software mode. Bit 0: Jam Enable. If this bit is set to 1, a Jam sequence is sent for a duration of 4 bytes. This function is only valid in half duplex mode, and will only function if Automatic Flow Control is disabled. Note that if the receive queue size is less than receive high threshold, setting a JAME will JAM one received frame. If JAME is set and the receiver queue size is higher than the high threshold, all received frames are jammed until the queue empties below the threshold. Note that SU.GCR is only valid in the software mode. In hardware mode, pins are used to control Automatic flow control and 100/10-speed selection.
126 of 181
DS33Z44 Quad Ethernet Mapper Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0 SU.TFRC Transmit Frame Resend Control 151h, 211h, 2D1h, 391h 5 0 4 0 3 NCFQ 0 2 TPDFCB 0 1 TPRHBC 0 0 TPRCB 0
Bit 3: No Carrier Queue Flush Bar. If this bit is set to 1, the queue for data passing from Serial Interface to Ethernet Interface will not be flushed when loss of carrier is detected. Bit 2: Transmit Packet Deferred Fail Control Enable. If this bit if set to 1, the current frame is transmitted immediately instead of being deferred. If this bit is set to 0, the frame is deferred if CRS is asserted and sent when the CRS is unasserted indicating the media is idle. Bit 1: Transmit Packet HB Fail Control Bar. If this bit is set to 1, the current frame will not be retransmitted if a heartbeat failure is detected. Bit 0: Transmit Packet Resend Control Bar. If this bit is set to 1, the current frame will not be retransmitted if any of the following errors have occurred: * * * * * * * Jabber timeout Loss of carrier Excessive deferral Late collision Excessive collisions Under run Collision
Note that blocking retransmission due to collision (applicable in MIII/Half Duplex Mode) can result in unpredictable system level behavior.
127 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: Bit # Name Default 7 UR 0 6 EC 0
SU.TFSL Transmit Frame Status Low 152h, 212h, 2D2h, 392h 5 LC 0 4 ED 0 3 LOC 0 2 NOC 0 1 0 0 FABORT 0
Bit 7: Under Run. When this bit is set to 1, the frame was aborted due to a data under run condition of the transmit buffer. Bit 6: Excessive Collisions. When this bit is set to 1, a frame has been aborted after 16 successive collisions while attempting to transmit the current frame. If the Disable Retry bit is set to 1, then Excessive Collisions will be set to 1 after the first collision. Bit 5: Late Collision. When this bit is set to 1, a frame was aborted by collision after the 64 bit collision window. Not valid if an under run has occurred. Bit 4: Excessive Deferral. When this bit is set to 1, a frame was aborted due to excessive deferral. Bit 3: Loss Of Carrier. When this bit is set to 1, a frame was aborted due to loss of carrier for one or more bit times. Valid only for non-collided frames. Valid only in half-duplex operation. Bit 2: No Carrier. When this bit is set to 1, a frame was aborted because no carrier was found for transmission. Bit 1: Reserved Bit 0: Frame Abort. When this bit is set to 1, the MAC has aborted a frame for one of the above reasons. When this bit is clear, the previous frame has been transmitted successfully.
Register Name: Register Description: Register Address: Bit # Name Default 7 PR 0 6 HBF 0
SU.TFSH Transmit Frame Status High 153h, 213h, 2D3h, 393h 5 CC3 0 4 CC2 0 3 CC1 0 2 CC0 0 1 LCO 0 0 DEF 0
Bit 7: Packet Resend. When this bit is set, the current packet must be retransmitted due to a collision. Bit 6: Heartbeat Failure. When this bit is set, the device failed to detect a heart beat after transmission. This bit is not valid if an under run has occurred. Bits 2 to 5: Collision Count (CC0-3). These 4 bits indicate the number of collisions that occurred prior to successful transmission of the previous frame. Not valid if Excessive Collisions is set to 1. Bit 1: Late Collision. When set to 1, the MAC observed a collision after the 64-byte collision window. Bit 0: Deferred Frame. When set to 1, the current frame was deferred due to carrier assertion by another node after being ready to transmit.
128 of 181
DS33Z44 Quad Ethernet Mapper Register Name: Register Description: Register Address: Bit # Name Default 7 FL7 0 6 FL6 0 SU.RFSB0 Receive Frame Status Byte 0 154h, 214h, 2D4h, 394h 5 FL5 0 4 FL4 0 3 FL3 0 2 FL2 0 1 FL1 0 0 FL0 0
Bits 0 to 7: Frame Length[0:7]. These 8 bits are the low byte of the length (in bytes) of the received frame, with FCS and Padding. If Automatic Pad Stripping is enabled, this value is the length of the received packet without PCS or Pad bytes. The upper 6 bits are contained in SU.RFSB1. Register Name: Register Description: Register Address: Bit # Name Default 7 RF 0 6 WT 0 SU.RFSB1 Receive Frame Status Byte 1 155h, 215h, 2D5h, 395h 5 FL13 0 4 FL12 0 3 FL11 0 2 FL10 0 1 FL9 0 0 FL8 0
Bit 7: Runt Frame. This bit is set to 1 if the received frame was altered by a collision or terminated within the collision window. Bit 6: Watchdog Timeout. This bit is set to 1 if a packet receive time exceeds 2048 byte times. After 2048 byte times the receiver is disabled and the received frame will fail CRC check. Bits 0 to 5: Frame Length[8:13]. These 6 bits are the upper bits of the length (in bytes) of the received frame, with FCS and Padding. If Automatic Pad Stripping is enabled, this value is the length of the received packet without PCS or Pad bytes. Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0 SU.RFSB2 Receive Frame Status Byte 2 156h, 216h, 2D6h, 396h 5 CRCE 0 4 DB 0 3 MIIE 0 2 FT 0 1 CS 0 0 FTL 0
Bit 5: CRC Error. This bit is set to 1 if the received frame does not contain a valid CRC value. Bit 4: Dribbling Bit. This bit is set to 1 if the received frame contains a non-integer multiple of 8 bits. It does not indicate that the frame is invalid. This bit is not valid for runt or collided frames. Bit 3: MII Error. This bit is set to 1 if an error was found on the MII bus. Bit 2: Frame Type. This bit is set to 1 if the received frame exceeds 1536 bytes. It is equal to zero if the received frame is an 802.3 frame. This bit is not valid for runt frames. Bit 1: Collision Seen. This bit is set to 1 if a late collision occurred on the received packet. A late collision is one that occurs after the 64 byte collision window. Bit 0: Frame Too Long. This bit is set to 1 if a frame exceeds the 1518 byte maximum standard Ethernet frame. This bit is only an indication, and causes no frame truncation.
129 of 181
DS33Z44 Quad Ethernet Mapper Register Name: Register Description: Register Address: Bit # Name Default 7 MF 0 6 0 SU.RFSB3 Receive Frame Status Byte 3 157h, 217h, 2D7h, 397h 5 0 4 BF 0 3 MCF 0 2 UF 0 1 CF 0 0 LE 0
Bit 7: Missed Frame. This bit is set to 1 if the packet is not successfully received from the MAC by the packet Arbiter. Bit 4: Broadcast Frame. This bit is set to 1 if the current frame is a broadcast frame. Bit 3: Multicast Frame. This bit is set to 1 if the current frame is a multicast frame. Bit 2: Unsupported Control Frame. This bit is set to 1 if the frame received is a control frame with an opcode that is not supported. If the Control Frame bit is set, and the Unsupported Control Frame bit is clear, then a pause frame has been received and the transmitter is paused. Bit 1: Control Frame. This bit is set to 1 when the current frame is a control frame. This bit is only valid in fullduplex mode. Bit 0: Length Error. This bit is set to 1 when the frames length field and the actual byte count are unequal. This bit is only valid for 802.3 frames.
130 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: Bit # Name Default 7 RMPS7 1 6 RMPS6 1
SU.RMFSRL Receiver Maximum Frame Low Register 158h, 218h, 2D8h, 398h 5 RMPS5 1 4 RMPS4 0 3 RMPS3 0 2 RMPS2 0 1 RMPS1 1 0 RMPS0 0
Bits 7 to 0: Receiver Maximum Frame (RMPS0-7). Eight bits of sixteen bit value. Register description below. Register Name: Register Description: Register Address: Bit # Name Default 7 RMPS15 0 SU.RMFSRH Receiver Maximum Frame High Register 159h, 219h, 2D9h, 399h 6 RMPS14 0 5 RMPS13 0 4 RMPS12 0 3 RMPS11 0 2 RMPS10 1 1 RMPS9 1 0 RMPS8 1
Bits 7 to 0: Receiver Maximum Frame (RMPS8-15). This value is the receiver's maximum frame size (in bytes), up to a maximum of 2016 bytes. Any frame received greater than this value is rejected. The frame size includes destination address, source address, type/length, data and crc-32. The frame size is not the same as the frame length encoded within the IEEE 802.3 frame. Any values programmed that are greater than 2016 will have unpredictable behavior and should be avoided. Register Name: Register Description: Register Address: Bit # Name Default 7 RQLT7 0 6 RQLT6 0 SU.RQLT Receive Queue Low Threshold (Watermark) 15Ah, 21Ah, 2DAh, 39Ah 5 RQLT5 1 4 RQLT4 1 3 RQLT3 0 2 RQLT2 1 1 RQLT1 1 0 RQLT0 1
Bits 0 to 7: Receive Queue Low Threshold (RQLT0-7). The receive queue low threshold for the connection, in increments of 32 packets of 2048 bytes each. The value of this register is multiplied by 32 x 2048 bytes to determine the byte location of the threshold. Note that the receive queue is for data that was received from the Ethernet Interface to be sent to the Serial Interface. Register Name: Register Description: Register Address: Bit # Name Default 7 RQHT7 0 6 RQHT6 0 SU.RQHT Receive Queue High Threshold (Watermark) 15Bh, 21Bh, 2DBh, 39Bh 5 RQHT5 1 4 RQHT4 1 3 RQHT3 1 2 RQHT2 0 1 RQHT1 1 0 RQHT0 0
Bits 0 to 7: Receive Queue High Threshold (RQTH0-7). The receive queue high threshold for the connection, in increments of 32 packets of 2048 bytes each. The value of this register is multiplied by 32 x 2048 bytes to determine the byte location of the threshold. Note that the receive queue is for data that was received from the Ethernet Interface to be sent to the Serial Interface. 131 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0
SU.QRIE Receive Queue Cross Threshold enable 15Ch, 21Ch, 2DCh, 39Ch 5 0 4 0 3 RFOVFIE 0 2 RQVFIE 0 1 RQLTIE 0 0 RQHTIE 0
Bit 3: Receive FIFO Overflow Interrupt Enable. If this bit is set, the interrupt is enabled for RFOVFLS. Bit 2: Receive Queue Overflow Interrupt Enable. If this bit is set, the interrupt is enabled for RQOVFLS. Bit 1: Receive Queue Crosses Low Threshold Interrupt Enable. If this bit is set, the watermark interrupt is enabled for RQLTS. Bit 0: Receive Queue Crosses High Threshold Interrupt Enable. If this bit is set, the watermark interrupt is enabled for RQHTS.
Register Name: Register Description: Register Address: Bit # Name Default 7 0 6 0
SU.QCRLS Queue Cross Threshold Latched Status 15Dh, 21Dh, 2DDh, 39Dh 5 0 4 0 3 RFOVFLS 0 2 RQOVFLS 0 1 RQHTLS 0 0 RQLTLS 0
Bit 3: Receive FIFO Overflow latched Status. This bit is set if the receive FIFO overflows for the data to be transmitted from the MAC to the SDRAM. Bit 2: Receive Queue Overflow Latched Status. This bit is set if the receive queue has overflowed. This register is cleared after a read. Bit 1: Receive Queue for Connection Crossed High Threshold Latched Status. This bit is set if the receive queue crosses the high watermark. This register is cleared after a read. Bit 0: Receive Queue for Connection Crossed Low Threshold Latched Status. This bit is set if the receive queue crosses the low watermark. This register is cleared after a read. Note the bit order differences in the high/low threshold indications in SU.QCRLS and the interrupt enables in SU.QRIE.
132 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: Bit # Name Default Bit 7: Unused 7 0 6 UCFR 0
SU.RFRC Receive Frame Rejection Control 15Eh, 21Eh, 2DEh, 39Eh 5 CFRR 0 4 LERR 0 3 CRCERR 0 2 DBR 0 1 MIIER 0 0 BERR 0
Bit 6: Uncontrolled Control Frame Reject. When set to 1, Control Frames other than Pause Frames are allowed. When this bit is equal to zero, non-pause control frames are rejected. Bit 5: Control Frame Reject. When set to 1, control frames are allowed. When this bit is equal to zero, all control frames are rejected. Bit 4: Length Error Reject. When set to 1, frames with an unmatched frame length field and actual number of bytes received are allowed. When equal to zero, only frames with matching length fields and actual bytes received will be allowed. Bit 3: CRC Error Reject. When set to 1, frames received with a CRC error or MII error are allowed. When equal to zero, frames with CRC or MII errors are rejected. Bit 2: Dribbling Bit Reject. When set to 1, frames with lengths of non-integer multiples of 8 bits are allowed. When equal to zero, frames with dribbling bits are rejected. The dribbling bit setting is only valid only if there is not a collision or runt frame. Bit 1: MII Error Reject. When set to 1, frames are allowed with MII Receive Errors. When equal to zero, frames with MII errors are rejected. Bit 0: Broadcast Frame Reject. When set to 1, broadcast frames are allowed. When equal to zero, broadcast frames are rejected.
133 of 181
DS33Z44 Quad Ethernet Mapper
9.6.2
MAC Registers
The control registers related to the control of the individual Mac's are shown in the following table. The DS33Z44 keeps statistics for the packet traffic sent and received. The register address map is shown in the following table. Note that the addresses listed are the indirect addresses that must be provided to SU.MACRADH/SU.MACRADL or SU.MACAWH/SU.MACAWL. Register Name: Register Description: Register Address: 0000h: Bit # Name Default 0001h: Bit # Name Default 0002h: Bit # Name Default 0003h: Bit # Name Default SU.MACCR MAC Control Register 0000h (indirect)
31 RA 0 23 DRO 0 15 HO 0 07 BOLMT1 0
30 Reserved 0 22 Reserved 0 14 Reserved 0 06 BOLMT0 0
29 Reserved 0 21 OML0 0 13 HP 0 05 DC 0
28 HDB 0 20 F 0 12 LCC 0 04 Reserved 0
27 PS 0 19 PM 0 11 DBF 0 03 TE 0
26 Reserved 0 18 PR 0 10 DRTY 0 02 RE 0
25 Reserved 0 17 IF 0 09 Reserved 0 01 Reserved 0
24 Reserved 0 16 PB 0 08 ASTP 0 00 Reserved 0
Bit 31: Receive All Mode Select. When set to 1, address filtering is performed on all incoming packets. When equal to 0, only packets that pass Destination Address filtering will be received. Bit 28: Heartbeat Disable. When set to 1, the heartbeat (SQE) function is disabled. This bit should be set to 1 when operating in MII mode. Bit 27: Port Select. This bit should be equal to 0 for proper operation. Bit 23: Disable Receive Own. When set to 1, the MAC disables the reception of frames while TX_ENn is asserted. When this bit equals zero, transmitted frames are also received by the MAC. This bit should be cleared when operating in full-duplex mode. Bit 21: Loopback Operating Mode. When set to 1, data is looped from the transmit side, back to the receive side, without being transmitted to the PHY. Bit 20: Full Duplex Mode Select. When set to 1, the MAC transmits and receives data simultaneously. When in full duplex mode, the heartbeat check is disabled and the heartbeat fail status should be ignored. Bit 19: Pass All Multicast. When set to 1, all incoming frames with a Multicast destination address are passed. Bit 18: Promiscuous Mode. When set to 1, all incoming frames are received regardless of their destination address.
134 of 181
DS33Z44 Quad Ethernet Mapper Bit 17: Inverse Filtering - When set to 1, the address filtering block operates in Inverse Filtering mode. This mode of operation is only available while in Perfect Filtering mode. Bit 16: Pass Bad Frames - When set to 1, all frames are passed, including runt, collided, and truncated frames. Bit 15: Hash Only Filtering Mode. Works in conjunction with the Hash/Perfect Filtering mode bit. When set to 1, the filtering block operates in the Imperfect Address filtering mode for both the physical and multicast addresses. Bit 13: Hash/Perfect Filtering Mode. When set to 1, the device performs imperfect address filtering of multicast incoming frames according to the hash table specified in the Multicast Hash Table register. If the Hash Only bit is set to 1, then imperfect address filtering is also applied to the physical address. If the Hash Only bit equals zero, then the physical addresses are perfect filtered against the MAC address register. Bit 12: Late Collision Control. When set to 1, enables retransmission of a collided packet even after the collision period. When this bit is clear, retransmission of late collisions is disabled. Bit 11: Disable Broadcast Frames. When set to 1, broadcast frames are not received or transmitted. Bit 10: Disable Retry. When set to 1, the MAC makes only a single attempt to transmit each frame. If a collision occurs, the MAC ignores the current frame and proceeds to the next frame. When this bit equals 0, the MAC will retry collided packets 16 times before signaling a retry error. Bit 8: Automatic Pad Stripping. When set to 1, all incoming frames with less than 46 byte length are automatically stripped of the pad characters and FCS. Bits 6 and 7: Back-Off Limit. These two bits allow the user to set the back-off limit used for the maximum retransmission delay for collided packets. Default operation limits the maximum delay for retransmission to a countdown of 10 bits from a random number generator. The user can reduce the maximum number of counter bits as described in the table below. See IEEE 802.3 for details of the back-off algorithm. Bit 7 0 0 1 1 Bit 6 0 1 0 1 Random Number Generator Bits Used 10 8 4 1
Bit 5: Deferral Check. When set to 1, the MAC will abort packet transmission if it has deferred for more than 24,288 bit times. The deferral counter starts when the transmitter is ready to transmit a packet, but is prevented from transmission because CRS is active. If the MAC begins transmission but a collision occurs after the beginning of transmission, the deferral counter is reset again. If this bit is equal to zero, then the MAC will defer indefinitely. Bit 3: Transmitter Enable. When set to 1, packet transmission is enabled. When equal to zero, transmission is disabled. Bit 2: Receiver Enable. When set to 1, packet reception is enabled. When equal to zero, packets are not received.
135 of 181
DS33Z44 Quad Ethernet Mapper Register Name: Register Description: Register Address: 0004h: Bit # Name Default 0005h: Bit # Name Default 0006h: Bit # Name Default 31 Reserved 1 23 Reserved 1 15 PADR47 1 SU.MACAH MAC Address High Register 0004h (indirect) 30 Reserved 1 22 Reserved 1 14 PADR46 1 29 Reserved 1 21 Reserved 1 13 PADR45 1 28 Reserved 1 20 Reserved 1 12 PADR44 1 27 Reserved 1 19 Reserved 1 11 PADR43 1 26 Reserved 1 18 Reserved 1 10 PADR42 1 25 Reserved 1 17 Reserved 1 09 PADR41 1 24 Reserved 1 16 Reserved 1 08 PADR40 1
0007h: Bit # 07 06 05 04 03 02 01 00 PADR39 PADR38 PADR37 PADR36 PADR35 PADR34 PADR33 PADR32 Name Default 1 1 1 1 1 1 1 1 These 32 bits should be initialized with the upper 4 bytes of the Physical Address for this MAC device. Register Name: Register Description: Register Address: 0008h: Bit # Name Default 0009h: Bit # Name Default 000Ah: Bit # Name Default 000Bh: Bit # Name Default 31 PADR31 1 23 PADR23 1 15 PADR15 1 07 PADR07 1 SU.MACAL MAC Address Low Register 0008h (indirect) 30 PADR30 1 22 PADR22 1 14 PADR14 1 06 PADR06 1 29 PADR29 1 21 PADR21 1 13 PADR13 1 05 PADR05 1 28 PADR28 1 20 PADR20 1 12 PADR12 1 04 PADR04 1 27 PADR27 1 19 PADR19 1 11 PADR11 1 03 PADR03 1 26 PADR26 1 18 PADR18 1 10 PADR10 1 02 PADR02 1 25 PADR25 1 17 PADR17 1 09 PADR09 1 01 PADR01 1 24 PADR24 1 16 PADR16 1 08 PADR08 1 00 PADR00 1
These 32 bits should be initialized with the lower 4 bytes of the Physical Address for this MAC device.
136 of 181
DS33Z44 Quad Ethernet Mapper Register Name: Register Description: Register Address: 000Ch: Bit # Name Default 000Dh: Bit # Name Default 000Eh: Bit # Name Default 000Fh: Bit # Name Default SU.MACMAH MAC Multicast Address High Register 000Ch (indirect)
31 MMA63 1
30 MMA62 1
29 MMA61 1
28 MMA60 1
27 MMA59 1
26 MMA58 1
25 MMA57 1
24 MMA56 1
23 MMA55 1 15 MMA47 1 07 MMA39 1
22 MMA54 1 14 MMA46 1 06 MMA38 1
21 MMA53 1 13 MMA45 1 05 MMA37 1
20 MMA52 1 12 MMA44 1 04 MMA36 1
19 MMA51 1 11 MMA43 1 03 MMA35 1
18 MMA50 1 10 MMA42 1 02 MMA34 1
17 MMA49 1 09 MMA41 1 01 MMA33 1
16 MMA48 1 08 MMA40 1 00 MMA32 1
These registers can be initialized with the upper four bytes of a 64-bit hash table for group address filtering. Register Name: Register Description: Register Address: 0010h: Bit # Name Default 0011h: Bit # Name Default 0012h: Bit # Name Default 0013h: Bit # Name Default SU.MACMAL MAC Multicast Address Low Register 0010h (indirect)
31 MMA31 0
30 MMA30 0
29 MMA29 0
28 MMA28 0
27 MMA27 0
26 MMA26 0
25 MMA25 0
24 MMA24 0
23 MMA23 0 15 MMA15 0 07 MMA07 0
22 MMA22 0 14 MMA14 0 06 MMA06 0
21 MMA21 0 13 MMA13 0 05 MMA05 0
20 MMA20 0 12 MMA12 0 04 MMA04 0
19 MMA19 0 11 MMA11 0 03 MMA03 0
18 MMA18 0 10 MMA10 0 02 MMA02 0
17 MMA17 0 09 MMA09 0 01 MMA01 0
16 MMA16 0 08 MMA08 0 00 MMA00 0
These registers can be initialized with the lower four bytes of a 64-bit hash table for group address filtering.
137 of 181
DS33Z44 Quad Ethernet Mapper Register Name: Register Description: Register Address: 0014h: Bit # Name Default 0015h: Bit # Name Default 0016h: Bit # Name Default 0017h: Bit # Name Default SU.MACMIIA MAC MII Management (MDIO) Address Register 0014h (indirect)
31 Reserved 0 23 Reserved 0 15 PHYA4 0 07 MIIA1 1
30 Reserved 0 22 Reserved 0 14 PHYA3 1 06 MIIA0 1
29 Reserved 0 21 Reserved 0 13 PHYA2 0 05 Reserved 0
28 Reserved 0 20 Reserved 0 12 PHYA1 1 04 Reserved 0
27 Reserved 0 19 Reserved 0 11 PHYA0 1 03 Reserved 0
26 Reserved 0 18 Reserved 0 10 MIIA4 0 02 Reserved 0
25 Reserved 0 17 Reserved 0 09 MIIA3 1 01 MIIW 0
24 Reserved 0 16 Reserved 0 08 MIIA2 0 00 MIIB 0
Bits 11 to 15: PHY Address (PHYA0-4). These 5 bits select one of the 32 available PHY address locations to access through the PHY management (MDIO) bus. Bits 6 to 10: MII Address (MIIA0-4). These 5 bits are the address location within the PHY that is being accessed. Bit 1: MII Write. Write this bit to 1 in order to execute a write instruction over the MDIO interface. Write the bit to zero to execute a read instruction. Bit 0: MII Busy. This bit is set to 1 by the DS33Z44 during execution of a MII management instruction through the MDIO interface, and is set to zero when the DS33Z44 has completed the instruction. The user should read this bit and ensure that it is equal to zero prior to beginning a MDIO instruction. Note that this register is only valid for MAC 1.
138 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: 0018h: Bit # Name Default 0019h: Bit # Name Default 001Ah: Bit # Name Default 001Bh: Bit # Name Default
SU.MACMIID MAC MII (MDIO) Data Register 0018h (indirect)
31 Reserved 0
30 Reserved 0
29 Reserved 0
28 Reserved 0
27 Reserved 0
26 Reserved 0
25 Reserved 0
24 Reserved 0
23 Reserved 0 15 MIID15 0 07 MIID07 0
22 Reserved 0 14 MIID14 0 06 MIID06 0
21 Reserved 0 13 MIID13 0 05 MIID05 0
20 Reserved 0 12 MIID12 0 04 MIID04 0
19 Reserved 0 11 MIID11 0 03 MIID03 0
18 Reserved 0 10 MIID10 0 02 MIID02 0
17 Reserved 0 09 MIID09 0 01 MIID01 0
16 Reserved 0 08 MIID08 0 00 MIID00 0
Bits 0 to 15: MII (MDIO) Data. These two bytes contain the data to be written to or the data read from the MII management interface (MDIO). Note that this register is only valid for MAC 1.
139 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: 001Ch: Bit # Name Default 001Dh: Bit # Name Default 001Eh: Bit # Name Default 001Fh: Bit # Name Default
SU.MACFCR MAC Flow Control Register 001Ch (indirect)
31 PT15 0
30 PT14 0
29 PT13 0
28 PT12 0
27 PT11 0
26 PT10 0
25 PT09 0
24 PT08 0
23 PT07 0 15 Reserved 0
22 PT06 1 14 Reserved 0
21 PT05 0 13 Reserved 0
20 PT04 1 12 Reserved 0
19 PT03 0 11 Reserved 0
18 PT02 0 10 Reserved 0
17 PT01 0 09 Reserved 0
16 PT00 0 08 Reserved 0
07 Reserved 0
06 Reserved 0
05 Reserved 0
04 Reserved 0
03 Reserved 0
02 PCF 0
01 FCE 1
00 FCB 0
Bits 16 to 31: Pause Time. These bits are used for the Pause Time Field in transmitted Pause Frames. This value is the number of time slots the remote node should wait prior to transmission. Bit 2: Pass Control Frames. When set to 1, the MAC will set the Packet Filter bit to indicate that it has received a control or pause frame. When FCE is also set to 1, the MAC will respond to control and pause frames, but also passes them. When this bit equals zero, all frames, including control and pause frames are passed. The other address filtering modes take precedence over this bit. Bit 1: Flow Control Enable. When set to 1, the MAC automatically detects pause frames and will disable the transmitter for the requested pause time. Bit 0: Flow Control Busy. The host can set this bit to 1 in order to initiate transmission of a pause frame. During transmission of a pause frame, this bit remains set. The DS33Z44 will clear this bit when transmission of the pause frame has been completed. The user should read this bit and ensure that this bit is equal to zero prior to initiating a pause frame.
140 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: 0100h: Bit # Name Default 0101h: Bit # Name Default 0102h: Bit # Name Default 0103h: Bit # Name Default
SU.MMCCTRL MAC MMC Control Register 0100h (indirect)
31 Reserved 0
30 Reserved 0
29 Reserved 0
28 Reserved 0
27 Reserved 0
26 Reserved 0
25 Reserved 0
24 Reserved 0
23 Reserved 0 15 Reserved 0 07 MXFRM4 0
22 Reserved 0 14 Reserved 0 06 MXFRM3 1
21 Reserved 0 13 MXFRM10 1 05 MXFRM2 1
20 Reserved 0 12 MXFRM9 0 04 MXFRM1 1
19 Reserved 0 11 MXFRM8 1 03 MXFRM0 0
18 Reserved 0 10 MXFRM7 1 02 Reserved 0
17 Reserved 0 09 MXFRM6 1 01 Reserved 1
16 Reserved 0 08 MXFRM5 1 00 Reserved 0
Bits 3 to 13: Maximum Frame Size (MXFRM[0:10]). These bits indicate the maximum packet size value. All transmitted frames larger than this value are counted as long frames. Bit 1: Reserved. Note that this bit must be written to a "1" for proper operation.
141 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: 010Ch: Bit # Name Default 010Dh: Bit # Name Default 010Eh: Bit # Name Default 010Fh: Bit # Name Default
Reserved MAC Reserved Control Register 010Ch (indirect)
31 Reserved 0
30 Reserved 0
29 Reserved 0
28 Reserved 0
27 Reserved 0
26 Reserved 0
25 Reserved 0
24 Reserved 0
23 Reserved 0 15 Reserved 0 07 Reserved 0
22 Reserved 0 14 Reserved 0 06 Reserved 0
21 Reserved 0 13 Reserved 0 05 Reserved 0
20 Reserved 0 12 Reserved 0 04 Reserved 0
19 Reserved 0 11 Reserved 0 03 Reserved 0
18 Reserved 0 10 Reserved 0 02 Reserved 0
17 Reserved 0 09 Reserved 0 01 Reserved 0
16 Reserved 0 08 Reserved 0 00 Reserved 0
Note: Addresses 10Ch through 10Fh must each be initialized with all 1s (FFh) for proper operation.
142 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: 0110h: Bit # Name Default 0111h: Bit # Name Default 0112h: Bit # Name Default 0113h: Bit # Name Default
Reserved MAC Reserved Control Register 0110h (indirect)
31 Reserved 0
30 Reserved 0
29 Reserved 0
28 Reserved 0
27 Reserved 0
26 Reserved 0
25 Reserved 0
24 Reserved 0
23 Reserved 0 15 Reserved 0 07 Reserved 0
22 Reserved 0 14 Reserved 0 06 Reserved 0
21 Reserved 0 13 Reserved 0 05 Reserved 0
20 Reserved 0 12 Reserved 0 04 Reserved 0
19 Reserved 0 11 Reserved 0 03 Reserved 0
18 Reserved 0 10 Reserved 0 02 Reserved 0
17 Reserved 0 09 Reserved 0 01 Reserved 0
16 Reserved 0 08 Reserved 0 00 Reserved 0
Note: Addresses 110h through 113h must each be initialized with all 1s (FFh) for proper operation.
143 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: 0200h: Bit # Name Default 0201h: Bit # Name Default 0202h: Bit # Name Default 0203h: Bit # Name Default
SU.RxFrmCtr MAC All Frames Received Counter 0200h (indirect)
31
RXFRMC31
30
RXFRMC30
29
RXFRMC29
28
RXFRMC28
27
RXFRMC27
26
RXFRMC26
25
RXFRMC25
24
RXFRMC24
0
0
0
0
0
0
0
0
23
RXFRMC23
22
RXFRMC22
21
RXFRMC21
20
RXFRMC20
19
RXFRMC19
18
RXFRMC18
17
RXFRMC17
16
RXFRMC16
0 15
RXFRMC15
0 14
RXFRMC14
0 13
RXFRMC13
0 12
RXFRMC12
0 11
RXFRMC11
0 10
RXFRMC10
0 09
RXFRMC9
0 08
RXFRMC8
0 07
RXFRMC7
0 06
RXFRMC6
0 05
RXFRMC5
0 04
RXFRMC4
0 03
RXFRMC3
0 02
RXFRMC2
0 01
RXFRMC1
0 00
RXFRMC0
0
0
0
0
0
0
0
0
Bits 0 to 31: All Frames Received Counter (RXFRMC[0:31]): 32-bit value indicating the number of frames received. Each time a frame is received, this counter is incremented by 1. This counter resets only upon device reset, does not saturate, and rolls over to zero upon reaching the maximum value. The user should ensure that the measurement period is less than the minimum length of time required for the counter to increment 2^32-1 times at the maximum frame rate. The user should store the value from the beginning of the measurement period for later calculations, and take into account the possibility of a roll-over to occurring.
144 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: 0204h: Bit # Name Default 0205h: Bit # Name Default 0206h: Bit # Name Default 0207h: Bit # Name Default
SU.RxFrmOkCtr MAC Frames Received OK Counter 0204h (indirect)
31 0
30 0
29 0
28 0
27 0
26 0
25 0
24 0
RXFRMOK31 RXFRMOK30 RXFRMOK29 RXFRMOK28 RXFRMOK27 RXFRMOK26 RXFRMOK25 RXFRMOK24
23 0 15 0 07 0
22 0 14 0 06 0
21 0 13 0 05 0
20 0 12 0 04 0
19 0 11 0 03 0
18 0 10 0 02 0
17 0 09 0 01 0
16 0 08 0 00 0
RXFRMOK23 RXFRMOK22 RXFRMOK21 RXFRMOK20 RXFRMOK19 RXFRMOK18 RXFRMOK17 RXFRMOK16
RXFRMOK15 RXFRMOK14 RXFRMOK13 RXFRMOK12 RXFRMOK11 RXFRMOK10 RXFRMOK9 RXFRMOK8
RXFRMOK7 RXFRMOK6 RXFRMOK5 RXFRMOK4 RXFRMOK3 RXFRMOK2 RXFRMOK1 RXFRMOK0
Bits 0 to 31: Frames Received OK Counter (RXFRMOK[0:31]). 32-bit value indicating the number of frames received and determined to be valid. Each time a valid frame is received, this counter is incremented by 1. This counter resets only upon device reset, does not saturate, and rolls over to zero upon reaching the maximum value. The user should ensure that the measurement period is less than the minimum length of time required for the counter to increment 2^32-1 times at the maximum frame rate. The user should store the value from the beginning of the measurement period for later calculations, and take into account the possibility of a roll-over to occurring.
145 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: 0300h: Bit # Name Default 0301h: Bit # Name Default 0302h: Bit # Name Default 0303h: Bit # Name Default
SU.TxFrmCtr MAC All Frames Transmitted Counter 0300h (indirect)
31
TXFRMC31
30
TXFRMC30
29
TXFRMC29
28
TXFRMC28
27
TXFRMC27
26
TXFRMC26
25
TXFRMC25
24
TXFRMC24
0 23
TXFRMC23
0 22
TXFRMC22
0 21
TXFRMC21
0 20
TXFRMC20
0 19
TXFRMC19
0 18
TXFRMC18
0 17
TXFRMC17
0 16
TXFRMC16
0 15
TXFRMC15
0 14
TXFRMC14
0 13
TXFRMC13
0 12
TXFRMC12
0 11
TXFRMC11
0 10
TXFRMC10
0 09
TXFRMC9
0 08
TXFRMC8
0
0
0
0
0
0
0
0
07
TXFRMC7
06
TXFRMC6
05
TXFRMC5
04
TXFRMC4
03
TXFRMC3
02
TXFRMC2
01
TXFRMC1
00
TXFRMC0
0
0
0
0
0
0
0
0
Bits 0 to 31: All Frames Transmitted Counter (TXFRMC[0:31]). 32-bit value indicating the number of frames transmitted. Each time a frame is transmitted, this counter is incremented by 1. This counter resets only upon device reset, does not saturate, and rolls over to zero upon reaching the maximum value. The user should ensure that the measurement period is less than the minimum length of time required for the counter to increment 2^32-1 times at the maximum frame rate. The user should store the value from the beginning of the measurement period for later calculations, and take into account the possibility of a roll-over to occurring.
146 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: 0308h: Bit # Name Default 0309h: Bit # Name Default 030Ah: Bit # Name Default 030Bh: Bit # Name Default
SU.TxBytesCtr MAC All Bytes Transmitted Counter 0308h (indirect)
31 0
30 0
29 0
28 0
27 0
26 0
25 0
24 0
TXBYTEC31 TXBYTEC30 TXBYTEC29 TXBYTEC28 TXBYTEC27 TXBYTEC26 TXBYTEC25 TXBYTEC24
23 0 15 0 07
TXBYTEC7
22 0 14 0 06
TXBYTEC6
21 0 13 0 05
TXBYTEC5
20 0 12 0 04
TXBYTEC4
19 0 11 0 03
TXBYTEC3
18 0 10 0 02
TXBYTEC2
17 0 09
TXBYTEC9
16 0 08
TXBYTEC8
TXBYTEC23 TXBYTEC22 TXBYTEC21 TXBYTEC20 TXBYTEC19 TXBYTEC18 TXBYTEC17 TXBYTEC16
TXBYTEC15 TXBYTEC14 TXBYTEC13 TXBYTEC12 TXBYTEC11 TXBYTEC10
0 01
TXBYTEC1
0 00
TXBYTEC0
0
0
0
0
0
0
0
0
Bits 0 to 31: All Bytes Transmitted Counter (TXBYTEC[0:31]). 32-bit value indicating the number of bytes transmitted. Each time a byte is transmitted, this counter is incremented by 1. This counter resets only upon device reset, does not saturate, and rolls over to zero upon reaching the maximum value. The user should ensure that the measurement period is less than the minimum length of time required for the counter to increment 2^32-1 times at the maximum data rate. The user should store the value from the beginning of the measurement period for later calculations, and take into account the possibility of a roll-over to occurring.
147 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: 030Ch: Bit # Name Default 030Dh: Bit # Name Default 030Eh: Bit # Name Default 030Fh: Bit # Name Default
SU.TxBytesOkCtr MAC Bytes Transmitted OK Counter 030Ch (indirect)
31 0
30 0
29 0
28 0
27 0
26 0
25 0
24 0
TXBYTEOK31 TXBYTEOK30 TXBYTEOK29 TXBYTEOK28 TXBYTEOK27 TXBYTEOK26 TXBYTEOK25 TXBYTEOK24
23 0 15 0 07
TXBYTEOK7
22 0 14 0 06
TXBYTEOK6
21 0 13 0 05
TXBYTEOK5
20 0 12 0 04
TXBYTEOK4
19 0 11 0 03
TXBYTEOK3
18 0 10 0 02
TXBYTEOK2
17 0 09
TXBYTEOK9
16 0 08
TXBYTEOK8
TXBYTEOK23 TXBYTEOK22 TXBYTEOK21 TXBYTEOK20 TXBYTEOK19 TXBYTEOK18 TXBYTEOK17 TXBYTEOK16
TXBYTEOK15 TXBYTEOK14 TXBYTEOK13 TXBYTEOK12 TXBYTEOK11 TXBYTEOK10
0 01
TXBYTEOK1
0 00
TXBYTEOK0
0
0
0
0
0
0
0
0
Bits 0 to 31: Bytes Transmitted OK Counter (TXBYTEOK[0:31]). 32-bit value indicating the number of bytes transmitted and determined to be valid. Each time a valid byte is transmitted, this counter is incremented by 1. This counter resets only upon device reset, does not saturate, and rolls over to zero upon reaching the maximum value. The user should ensure that the measurement period is less than the minimum length of time required for the counter to increment 2^32-1 times at the maximum frame rate. The user should store the value from the beginning of the measurement period for later calculations, and take into account the possibility of a roll-over to occurring.
148 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: 0334h: Bit # Name Default 0335h: Bit # Name Default 0336h: Bit # Name Default 0337h: Bit # Name Default
SU.TXFRMUNDR MAC Transmit Frame Underrun Counter 0334h (indirect)
31
TXFRMU31
30
TXFRMU30
29
TXFRMU29
28
TXFRMU28
27
TXFRMU27
26
TXFRMU26
25
TXFRMU25
24
TXFRMU24
0
0
0
0
0
0
0
0
23
TXFRMU23
22
TXFRMU22
21
TXFRMU21
20
TXFRMU20
19
TXFRMU19
18
TXFRMU18
17
TXFRMU17
16
TXFRMU16
0 15
TXFRMU15
0 14
TXFRMU14
0 13
TXFRMU13
0 12
TXFRMU12
0 11
TXFRMU11
0 10
TXFRMU10
0 09
TXFRMU9
0 08
TXFRMU8
0 07
TXFRMU7
0 06
TXFRMU6
0 05
TXFRMU5
0 04
TXFRMU4
0 03
TXFRMU3
0 02
TXFRMU2
0 01
TXFRMU1
0 00
TXFRMU0
0
0
0
0
0
0
0
0
Bits 0 to 31: Frames Aborted Due to FIFO Underrun Counter (TXFRMU[0:31]). 32-bit value indicating the number of frames aborted due to FIFO under run. Each time a frame is aborted due to FIFO under run, this counter is incremented by 1. This counter resets only upon device reset, does not saturate, and rolls over to zero upon reaching the maximum value. The user should ensure that the measurement period is less than the minimum length of time required for the counter to increment 2^32-1 times at the maximum frame rate. The user should store the value from the beginning of the measurement period for later calculations, and take into account the possibility of a rollover to occurring.
149 of 181
DS33Z44 Quad Ethernet Mapper
Register Name: Register Description: Register Address: 0338h: Bit # Name Default 0339h: Bit # Name Default 033Ah: Bit # Name Default 033Bh: Bit # Name Default
SU.TxBdFrmCtr MAC All Frames Aborted Counter 0338h (indirect)
31 0
30 0
29 0
28 0
27 0
26 0
25 0
24 0
TXFRMBD31 TXFRMBD30 TXFRMBD29 TXFRMBD28 TXFRMBD27 TXFRMBD26 TXFRMBD25 TXFRMBD24
23 0 15 0
22 0 14 0
21 0 13 0
20 0 12 0
19 0 11 0
18 0 10 0
17 0 09 0
16 0 08
TXFRMBD8
TXFRMBD23 TXFRMBD22 TXFRMBD21 TXFRMBD20 TXFRMBD19 TXFRMBD18 TXFRMBD17 TXFRMBD16
TXFRMBD15 TXFRMBD14 TXFRMBD13 TXFRMBD12 TXFRMBD11 TXFRMBD10 TXFRMBD9
0
07
TXFRMBD7
06
TXFRMBD6
05
TXFRMBD5
04
TXFRMBD4
03
TXFRMBD3
02
TXFRMBD2
01
TXFRMBD1
00
TXFRMBD0
0
0
0
0
0
0
0
0
Bits 0 to 31: All Frames Aborted Counter (TXFRMBD[0:31]). 32-bit value indicating the number of frames aborted due to any reason. Each time a frame is aborted, this counter is incremented by 1. This counter resets only upon device reset, does not saturate, and rolls over to zero upon reaching the maximum value. The user should ensure that the measurement period is less than the minimum length of time required for the counter to increment 2^32-1 times at the maximum frame rate. The user should store the value from the beginning of the measurement period for later calculations, and take into account the possibility of a roll-over to occurring.
150 of 181
DS33Z44 Quad Ethernet Mapper
10 FUNCTIONAL TIMING
10.1 Functional Serial I/O Timing
The Serial Interface provides flexible timing to interconnect with a wide variety of serial interfaces. TDENn is an input signal that can be used to enable or block the TSERn data. The "shaded bits" are not clocked by the DS33Z44. The TDENn must occur one bit before the effected bit in the TSERn stream. Note that polarity of the TDENn is selectable through LI.TSLCR. In the figure below, TDENn is active low, allowing the bits to clock, and inactive high, causing the next data bit not to be clocked. TCLK can be gapped as shown in the following figure. Similarly, the receiver function is governed by RCLKIn, RDENn and RSERn. RSERn data will not be provided to the receiver for the bits blocked when RDENn is inactive. The RDENn polarity can be programmed by LI.RSLCR. The RDENn signal must be coincident with the RSERn bit that needs to be blocked.
Figure 10-1. Tx Serial Interface Functional Timing
TCLKIn TDENn TCLK gapped TSERn TCLKn Gapped TSERn TSER
Figure 10-2. Rx Serial Interface Functional Timing
RCLKIn RDENn RSERn RCLKn Gapped RSERn TSER
151 of 181
DS33Z44 Quad Ethernet Mapper The DS33Z44 provides the TBSYNC1-4 signals as a byte boundary indication to an external interface when X.86 (LAPS) functionality is selected. The functional timing of TBSYNCn is shown in the following figure. TBSYNCn is active high on the last bit of the byte being shifted out, and occurs every 8 bits. For the serial receiver interface, RBSYNCn is used to provide byte boundary indication to the DS33Z44 when X.86 (LAPS) mode is used. The functional timing is shown in Figure 10-3. In X.86 Mode, the receiver expects the RBSYNCn byte indicator as shown in Figure 10-4.
Figure 10-3. Transmit Byte Sync Functional timing
TCLKIn TBSYNCn TSERn last bit 1st bit
Figure 10-4. Receive Byte Sync Functional Timing
RCLKIn RBYSYNCn RSERn last bit 1st bit
10.2 MII and RMII Interfaces
The MII Interface Transmit Port has its own transmit clock and data interface. The data bus TXDn[3:0] operates synchronously with TX_CLKn. The LSB is presented first. TX_CLKn should be 2.5 MHz for 10 Mbit/s operation and 25 MHz for 100 Mbit/s operation. TX_ENn is valid at the same time as the first byte of the preamble. In DTE Mode TX_CLKn is input from the external PHY. In DCE Mode, the DS33Z44 provides TX_CLKn, derived from an external reference (SYSCLKI). In Half-Duplex (DTE) Mode, the DS33Z44 supports CRS and COL signals. CRS is active when the PHY detects transmit or receive activity. If there is a collision as indicated by the COL input, the DS33Z44 will replace the data nibbles with jam nibbles. After a "random" time interval, the packet is retransmitted. The MAC will try to send the packet a maximum of 16 times. The jam sequence consists of 55555555h. Note that the COL signal and CRS can be asynchronous to TX_CLKn and are only valid in half duplex mode.
152 of 181
DS33Z44 Quad Ethernet Mapper
Figure 10-5. MII Transmit Functional Timing
TX_CLK TXD[3:0] TX_EN P R E A E M B L E F C S
Figure 10-6. MII Transmit Half Duplex with a Collision Functional Timing
TX_CLKn TXDn[3:0] TX_ENn CRS COL P R E A M B L E J J J J J J J J
Receive Data (RXDn[3:0]) is clocked from the external PHY synchronously with RX_CLKn. The RX_CLKn signal is 2.5 MHz for 10 Mbit/s operation and 25 MHz for 100 Mbit/s operation. RX_DVn is asserted by the PHY from the first Nibble of the preamble in 100 Mbit/s operation or first nibble of SFD for 10 Mbit/s operation. The data on RXDn[3:0] is not accepted by the MAC if RX_DVn is low or RX_ERRn is high (in DTE mode). RX_ERRn should be tied low when in DCE Mode.
Figure 10-7. MII Receive Functional Timing
RX_CLK RXDn[3:0] P R E A E M B L E F C S
In RMII Mode, TX_ENn is high with the first bit of the preamble. The TXDn[1:0] is synchronous with the 50 MHz REFCLK. For 10 Mbit/s operation, the data bit outputs are updated every 10 clocks.
Figure 10-8. RMII Transmit Interface Functional Timing
REFCLK TXDn[1:0] TX_EN P R E A M B L E F C S
153 of 181
DS33Z44 Quad Ethernet Mapper RMII Receive data on RXDn[1:0] is expected to be synchronous with the rising edge of the 50 MHz REFCLK. The data is only valid if CRS_DVn is high. The external PHY asynchronously drives CRS_DVn low during carrier loss.
Figure 10-9. RMII Receive Interface Functional Timing
REFCLK RXDn[1:0] CRS_DVn P R E A M B L E F C S
10.3 SPI Interface Mode and EEPROM Program Sequence
The DS33Z44 will act as an SPI Master when configured with MODEC[1:0] to read the configuration from an external Serial EEPROM, such as the Atmel AT25160A. The EEPROM must be programmed with the data structure shown in Table 10-1. The MOSI (Master Out Slave In) signal can be selectively output on the rising or falling edge of SPICK. The MISO data can be sampled on rising or falling edge of SPICK based on the CKPHA pin input. The SPICK is generated by the DS33Z44 at a frequency of 8.33 MHz, derived from an external SYSCLKI of 100 MHz. The initialization sequence is commenced immediately after power up reset or a rising edge of the RST input pin. The SPI master initiates a read with the instruction code 0000x011b; followed by the address location. The SPI_CS is held low until the data addressed is read and latched. The DS33Z44 begins reading the EEPROM at address 0000h. Data is sequentially latched until the last data byte is read and latched. The indirect MAC registers require a special program sequence at the end of the EEPROM file. Four MAC registers can be programmed in the EEPROM Mode: SU.MACCR, SU.MACMIIA, SU.MACMIID, and SU.MACFCR. The indirect MAC registers are programmed using four separate seven-byte records from the EEPROM. An example is shown in Table 10-2.
Figure 10-10. SPI Master Functional Timing
0 1 2 3 4 5 6 7 8 9 10 11 20 21 22 23 24 25 26 27 28 29 30 31
SPI_CS*
SPICK CKPHA=0 SPICK CKPHA=1
MOSI MISO
0
0
0
0 0
X
0
1
1
0
0
0
0
0
0
0
0 7 6 5 4 3 2 1 0
154 of 181
DS33Z44 Quad Ethernet Mapper
Table 10-1. EEPROM Program Memory Map
FUNCTIONAL BLOCK Global Registers Arbiter Registers BERT Registers Serial Interface 1 Tx Registers Serial Interface 1 Rx Registers Ethernet Interface 1 Registers Serial Interface 2 Tx Registers Serial Interface 2 Rx Registers Ethernet Interface 2 Registers Serial Interface 3 Tx Registers Serial Interface 3 Rx Registers Ethernet Interface 3 Registers Serial Interface 4 Tx Registers Serial Interface 4 Rx Registers Ethernet Interface 4 Registers MAC 1 Register 1 (MAC Control Register) MAC 1 Register 2 (MII Address Register) MAC 1 Register 3 (MII Data Register) MAC 1 Register 4 (Flow Control Register) MAC 2 Register 1 (MAC Control Register) MAC 2 Register 4 (Flow Control Register) MAC 3 Register 1 (MAC Control Register) MAC 3 Register 4 (Flow Control Register) MAC 4 Register 1 (MAC Control Register) MAC 4 Register 4 (Flow Control Register) ADDRESS RANGE FOR DATA IN EEPROM (IN HEX) 000h to 03Fh 040h to 07Fh 080h to 0BFh 0C0h to 0FFh 100h to 13Fh 140h to 17Fh 180h to 1BFh 1C0h to 1FFh 200h to 23Fh 240h to 27Fh 280h to 2BFh 2C0h to 2FFh 300h to 33Fh 340h to 37Fh 380h to 3BFh 3C0h to 3C6h (special for indirect addresses) 3C7h to 3CDh (special for indirect addresses) 3CEh to 3D4h (special for indirect addresses) 3D5h to 3DBh (special for indirect addresses) 3DCh to 3E2h (special for indirect addresses) 3E3h to 3E9h (special for indirect addresses) 3EAh to 3F0h (special for indirect addresses) 3F1h to 3F6h (special for indirect addresses) 3F7h to 3FDh (special for indirect addresses) 3FEh to 404h (special for indirect addresses)
155 of 181
DS33Z44 Quad Ethernet Mapper Table 10-2 shows the MAC Addresses for MAC1 that can be programmed in the EEPROM mode. The MII Address and Data is not available for MAC2 to 4 since only one MDC/MDIO port is available for the DS33Z44.
Table 10-2. MAC Registers That Can Be Programmed from the EEPROM
EEPROM FILE BYTE FUNCTION MAC Data Byte 1 MAC Data Byte 2 MAC Data Byte 3 MAC Data Byte 4 MAC Address Low MAC Address High MAC Write Command EEPROM MEMORY LOCATION* Base + 00h Base + 01h Base + 02h Base + 03h Base + 04h Base + 05h Base + 06h EXAMPLE EEPROM ADDRESS LOCATION 3C0h 3C1h 3C2h 3C3h 3C4h 3C5h 3C6h EXAMPLE DATA USING MAC REGISTER WRITE 1 TO INITIALIZE MACCR 2Ch--written to SU.MACWD0 00h--written to SU.MACWD1 04h--written to SU.MACWD2 90h--written to SU.MACWD3 00h--written to SU.MACAWL 00h-- written to SU.MACAWH 01h--written to SU.MACRWC to initiate the indirect write
* Base EEPROM address of MAC instructions = 3C0h.
156 of 181
DS33Z44 Quad Ethernet Mapper
11 OPERATING PARAMETERS
ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Lead with Respect to VSS (except VDD)...................................................-0.5V to +5.5V Supply Voltage Range (VDD3.3) with Respect to VSS..................................................................-0.3V to +3.6V Supply Voltage Range (VDD1.8) with Respect to VSS..................................................................-0.3V to +2.0V Ambient Operating Temperature Range..............................................................................-40C to +85C Junction Operating Temperature Range.............................................................................-40C to +125C Storage Temperature.....................................................................................................-55C to +125C Soldering Temperature..................................................................See IPC/JEDEC J-STD-020 Specification
These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated in the operation sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods of time can affect reliability. Ambient Operating Temperature Range is assuming the device is mounted on a JEDEC-standard test board in a convection-cooled JEDEC test enclosure. Note: The "typ" values listed below are not production tested.
Table 11-1. Recommended DC Operating Conditions
(VDD3.3 = 3.3V 5%, VDD1.8 = 1.8V 5%, Tj = -40C to +85C.) PARAMETER Logic 1 Logic 0 Supply (VDD3.3) 5% Supply (VDD1.8) 5% SYMBOL VIH VIL VDD3.3 VDD1.8 CONDITIONS MIN 2.0 -0.3 3.135 1.71 3.300 1.8 TYP MAX 3.465 +0.8 3.465 1.89 UNITS V V V V
Table 11-2. DC Electrical Characteristics
(Tj = -40C to +85C) PARAMETER Supply Current (VDD3.3 = 3.465V) Supply Current (VDD1.8 = 1.89V) Power-Down Current (All DISABLE and Power-Down Bits Set) for DS33Z44 Lead Capacitance Input Leakage Input Leakage Output Leakage (when Hi-Z) Output Voltage (IOH = -4.0mA) Output Voltage (IOL = +4.0mA) Output Voltage (IOH = -8.0mA) Output Voltage (IOL = +12.0mA) Input Voltage
Note 1: Note 2:
SYMBOL IDDIO IDDCORE IDDD CIO IIL IILP ILO VOH VOL VOH VOL VIL VIH
CONDITIONS (Notes 1, 2) (Notes 1, 2) (Note 2)
MIN
TYP 50 100
MAX
UNITS mA mA
90 7 -10 -50 -10 2.4 2.4 0.4 0.8 2.0 +10 -10 +10 0.4
mA pF mA mA mA V V V V V V
4mA outputs 4mA outputs 8mA outputs 12mA outputs
Typical power is 330mW. All outputs loaded with rated capacitance; all inputs between VDD and VSS; inputs with pullups connected to VDD.
157 of 181
DS33Z44 Quad Ethernet Mapper
Table 11-3. Typical Output Pin Drive Currents
NAME TSER1-4 TDEN1-4/ TBSYNC1-4 REF_CLKO TX_CLK1-4 TX_ENn TXDn[3:0] RX_CLK1-4 MDC MDIO D7 to D3, D2/SPICK, D1/MISO, D0/MOSI
SPI_CS INT
TYPE O IO O IO O O IO O IO
DRIVE CURRENT (mA) 12 4 8 4 4 4 4 4 4
IOZ
4
O Oz IOz O O O O O O O O O OZ
4 4 4 4 4 4 4 4 4 4 4 4 4
SDATA [31:0] SDA[11:0] SBA[1:0]
SRAS SCAS SWE
SDMask [3:0] SDCLKO
SDCS
QOVF1-4 JTDO
158 of 181
DS33Z44 Quad Ethernet Mapper
THERMAL CHARACTERISTICS
PARAMETER Ambient Temperature (Note 1) Junction Temperature Theta-JA (qJA) in Still Air for 256Pin CSBGA (Note 2)
Note 1: Note 2:
MIN -40C -- --
TYP -- -- +29.9C/W
MAX +85C +125C --
The package is mounted on a four-layer JEDEC standard test board. Theta-JA (qJA) is the junction-to-ambient thermal resistance, when the package is mounted on a four-layer JEDEC standard test board.
159 of 181
DS33Z44 Quad Ethernet Mapper
11.1 MII Interface
PARAMETER TX_CLKn Period TX_CLKn Low Time TX_CLKn High Time TX_CLKn to TXDn[3:0], TX_ENn Delay SYMBOL t1 t2 t3 t4 140 140 0 MIN 10 Mbps TYP 400 260 260 20 14 14 0 MAX MIN 100 Mbps TYP MAX 40 26 26 20 UNITS ns ns ns ns
Figure 11-1. Transmit MII Interface
t1 t2 t3 t4
TX_CLKn
TXDn[3:0]
TX_ENn
t4
160 of 181
DS33Z44 Quad Ethernet Mapper
PARAMETER RX_CLKn Period RX_CLKn Low Time RX_CLKn High Time RXDn[3:0], RX_DVn to RX_CLKn Setup Time RX_CLKn to RXDn[3:0], RX_DVn Hold Time
SYMBOL t5 t6 t7 t8 t9
MIN
10 Mbps TYP 400
MAX
MIN
100 Mbps TYP 40
MAX
UNITS ns
140 140 5 5
260 260
14 14 5 5
26 26
ns ns ns ns
Figure 11-2. Receive MII Interface Timing
t5
RX_CLKn
t8 t9
t7 t6
RXDn[3:0]
t8 t9
RX_DVn
161 of 181
DS33Z44 Quad Ethernet Mapper
11.2 RMII Interface
PARAMETER REF_CLK Frequency REF_CLK Period REF_CLK Low Time REF_CLK High Time TX_CLKn to TXDn[1:0], TX_ENn Delay t1 t2 t3 t4 7 7 5 SYMBOL MIN 10 Mbps TYP 50MHz 50ppm 20 13 13 10 7 7 5 MAX MIN 100 Mbps TYP 50MHz 50ppm 20 13 13 10 MAX UNITS
ns ns ns ns
Figure 11-3. Transmit RMII Interface
t1 t2 t3 t4
REF_CLK
TXDn[1:0]
TX_ENn
t4
162 of 181
DS33Z44 Quad Ethernet Mapper
PARAMETER REF_CLK Frequency REF_CLK Period REF_CLK Low Time REF_CLK High Time RXDn[3:0], RX_DVn to RX_CLKn Setup Time RX_CLKn to RXDn[3:0], RX_DVn Hold Time
SYMBOL
MIN
10 Mbps TYP 50MHz 50ppm
MAX
MIN
100 Mbps TYP 50MHz 50ppm 20
MAX
UNITS MHz ns
t1 t2 t3 t8 t9 7 7 5 5
20 13 13 7 7 5 5
13 13
ns ns ns ns
Figure 11-4. Receive MII Interface Timing
t5
RX_CLKn
t8 t9
t7 t6
RXDn[3:0]
t8 t9
RX_DVn
163 of 181
DS33Z44 Quad Ethernet Mapper
11.3 MDIO Interface
PARAMETER MDC Frequency MDC Period MDC Low Time MDC High Time MDC to MDIO Output Delay MDIO Setup Time MDIO Hold Time t1 t2 t3 t4 t5 t6 540 270 270 20 10 20 SYMBOL MIN TYP 1.67 600 300 300 660 330 330 10 MAX UNITS MHz ns ns ns ns ns ns
Figure 11-5. MDIO Timing
t1 t2 t3 t4
MDC
MDIO
MDC
t5 t6
MDIO
164 of 181
DS33Z44 Quad Ethernet Mapper
11.4 Transmit WAN Interface
PARAMETER TCLKIn Frequency TCLKIn Period TCLKIn Low Time TCLKIn High Time TCLKIn to TSERn Output Delay TSYNCn Setup Time TSYNCn Hold Time t1 t2 t3 t4 t5 t6 7 7 19.2 8 8 SYMBOL MIN TYP MAX 52 1000 550 550 10 UNITS MHz ns ns ns ns ns ns
Figure 11-6. Transmit WAN Timing
t1 t2 t3 t4
TCLKIn
TSERn
t5
TSYNCn
t6
165 of 181
DS33Z44 Quad Ethernet Mapper
11.5 Receive WAN Interface
PARAMETER RCLKIn Frequency RCLKIn Period RCLKIn Low Time RCLKIn High Time RSERn Setup Time RDENn Setup Time RBSYNCn Setup Time RDENn Setup Time RSYNCn Setup Time RSERn Hold Time RSYNCn Hold Time RDENn hold Time RBSYNn Hold Time t1 t2 t3 t4 t4 t4 t4 t4 t5 t5 t5 t5 19.2 8 8 7 7 7 7 7 2 2 2 2 ns ns ns ns ns ns SYMBOL MIN TYP MAX 52 1000 1000 1000 UNITS MHz ns ns ns ns ns
Figure 11-7. Receive WAN Timing
t1 t2 t3
t4 t5
RCLKIn
RSERn
t4 t5
RDENn
t4 t5
RBSYNCn/ RSYNCn
166 of 181
DS33Z44 Quad Ethernet Mapper
11.6 SDRAM Timing Table 11-4. SDRAM Interface Timing
PARAMETER SDCLKO Period SDCLKO Duty Cycle SDCLKO to SDATA Valid Write to SDRAM SDCLKO to SDATA Drive On Write to SDRAM SDCLKO to SDATA Invalid Write to SDRAM SDCLKO to SDATA Drive Off Write to SDRAM SDATA to SDCLKO Setup Time Read from SDRAM SDCLKO to SDATA Hold Time Read from SDRAM SDCLKO to SRAS, SCAS, SWE, SDCS Active Read or Write to SDRAM SDCLKO TO SRAS, SCAS, SWE, SDCS Inactive Read or Write to SDRAM SDCLKO to SDA, SBA Valid Read or Write to SDRAM SDCLKO TO SDA, SBA Invalid Read or Write to SADRAM SDCLKO to SDMASK Valid Read or Write to SDRAM SDCLKO to SDMASK Invalid Read or Write to SDRAM SYMBOL t1 t2 t3 t4 t5 t6 t7 t8 t9 t10 t11 t12 t13 t14 2 2 5 2 7 2 2 5 4 3 4 MIN 9.7 4 100MHz TYP 10 MAX 10.3 6 7 UNITS ns ns ns ns ns ns ns ns ns ns ns ns ns ns
167 of 181
DS33Z44 Quad Ethernet Mapper
Figure 11-8. SDRAM Interface Timing
t1
SDCLKO (output) SDATA (output)
t2 t3 t5
t4 t7 t8
t6
SDATA (input)
SRAS, SCAS, SWE, SDCS (output)
t9 t10
t11
t12
SDA, SBA (output)
t13 t14
SDMASK (output)
168 of 181
DS33Z44 Quad Ethernet Mapper
11.7 Microprocessor Bus AC Characteristics AC CHARACTERISTICS--Microprocessor Bus Timing
(VDD = 3.3V 5%, TA = -40C to +85C.) PARAMETER Setup Time for A[12:0] Valid to CS Active Setup Time for CS Active to either RD, or WR Active Delay Time from Either RD or DS Active to DATA[7:0] Valid Hold Time from Either RD or WR Inactive to CS Inactive Hold Time from CS or RD or DS Inactive to DATA[7:0] Tri-State Wait Time from RW Active to Latch Data Data Setup Time to DS Inactive Data Hold Time from RW Inactive Address Hold from RW inactive Write Access to Subsequent Write/Read Access Delay Time SYMBOL t1 t2 t3 t4 t5 t6 t7 t8 t9 t10 0 5 80 10 2 0 80 20 MIN 0 0 75 TYP MAX UNITS ns ns ns ns ns ns ns ns ns ns
169 of 181
DS33Z44 Quad Ethernet Mapper
Figure 11-9. Intel Bus Read Timing (HWMODE = 0, MODEC = 00)
t9
ADDR[12:0]
Address Valid
DATA[7:0]
Data Valid
t5
WR
t1
CS
t2 t3 t4 t10
RD
Figure 11-10. Intel Bus Write Timing (HWMODE = 0, MODEC = 00)
t9
ADDR[12:0]
Address Valid
DATA[7:0]
t7 t8
RD
t1
CS
t2 WR t6 t4 t10
170 of 181
DS33Z44 Quad Ethernet Mapper
Figure 11-11. Motorola Bus Read Timing (HWMODE = 0, MODEC = 01)
t9
ADDR[12:0]
Address Valid
DATA[7:0]
Data Valid
t5
RW
t1
CS
t2 t3 t4 t10
DS
Figure 11-12. Motorola Bus Write Timing (HWMODE = 0, MODEC = 01)
t9
ADDR[12:0]
Address Valid
DATA[7:0]
t7 t8
RW
t1
CS
t2 t6 t4 t10
DS
171 of 181
DS33Z44 Quad Ethernet Mapper
11.8 EEPROM Interface Timing
PARAMETER SPI_CK Period SPI_CK Low Time SPI_CK High Time MOSI Setup Delay MISO Hold MISO Setup MISO Hold
SPI_CS Hold
SYMBOL t1 t2 t3 t4 t5 T6 T7 T8
MIN
TYP 120
MAX
UNITS ns
55 55 50 50 10 10 60
65 65
ns ns ns ns ns ns ns
Figure 11-13. EEPROM Interface Timing
SPI_CS t1
t2
t3 t8
t4
t5
MOSI
t6
MISO
t7
172 of 181
DS33Z44 Quad Ethernet Mapper
11.9 JTAG Interface Timing
(VDD = 3.3V 5%, TA = -40C to +85C.) PARAMETER JTCLK Clock Period JTCLK Clock High:Low Time JTCLK to JTDI, JTMS Setup Time JTCLK to JTDI, JTMS Hold Time JTCLK to JTDO Delay JTCLK to JTDO HIZ Delay
JTRST Width Low Time
Note 1: Clock can be stopped high or low.
SYMBOL t1 t2:t3 t4 t5 t6 t7 t8
CONDITIONS
MIN
TYP 1000
MAX
UNITS ns ns ns ns
(Note 1)
50 2 2 2 2 100
500
50 50
ns ns ns
Figure 11-14. JTAG Interface Timing Diagram
t1 t2 JTCLK t4 JTDI, JTMS, JTRST t6 t7 t5 t3
JTD0
t8
JTRST
173 of 181
DS33Z44 Quad Ethernet Mapper
12 JTAG INFORMATION
The DS33Z44 supports the standard instruction codes SAMPLE:PRELOAD, BYPASS, and EXTEST. Optional public instructions included are HIGHZ, CLAMP, and IDCODE. See Table 12-1. The DS33Z44 contains the following as required by IEEE 1149.1 Standard Test Access Port and Boundary Scan Architecture. Test Access Port (TAP) TAP Controller Instruction Register Bypass Register Boundary Scan Register Device Identification Register The Test Access Port has the necessary interface pins; JTRST, JTCLK, JTMS, JTDI, and JTDO. See the pin descriptions for details. Refer to IEEE 1149.1-1990, IEEE 1149.1a-1993, and IEEE 1149.1b-1994 for details about the Boundary Scan Architecture and the Test Access Port.
Figure 12-1. JTAG Functional Block Diagram
Boundary Scan Register Identification Register Bypass Register Instruction Register Test Access Port Controller Select Tri-State
Mux
10K JTDI
10K JTMS JTCLK
10K
JTRST
JTDO
174 of 181
DS33Z44 Quad Ethernet Mapper
12.1 JTAG/TAP Controller State Machine Description
This section covers the details on the operation of the Test Access Port (TAP) Controller State Machine. The TAP controller is a finite state machine that responds to the logic level at JTMS on the rising edge of JTCLK.
TAP Controller State Machine
The TAP controller is a finite state machine that responds to the logic level at JTMS on the rising edge of JTCLK. See Figure 12-2 for a diagram of the state machine operation.
Test-Logic-Reset
Upon power up, the TAP Controller is in the Test-Logic-Reset state. The Instruction register will contain the IDCODE instruction. All system logic of the device will operate normally.
Run-Test-Idle
The Run-Test-Idle is used between scan operations or during specific tests. The Instruction register and test registers will remain idle.
Select-DR-Scan
All test registers retain their previous state. With JTMS LOW, a rising edge of JTCLK moves the controller into the Capture-DR state and will initiate a scan sequence. JTMS HIGH during a rising edge on JTCLK moves the controller to the Select-IR-Scan state.
Capture-DR
Data may be parallel-loaded into the test data registers selected by the current instruction. If the instruction does not call for a parallel load or the selected register does not allow parallel loads, the test register will remain at its current value. On the rising edge of JTCLK, the controller will go to the Shift-DR state if JTMS is LOW or it will go to the Exit1-DR state if JTMS is HIGH.
Shift-DR
The test data register selected by the current instruction is connected between JTDI and JTDO and will shift data one stage towards its serial output on each rising edge of JTCLK. If a test register selected by the current instruction is not placed in the serial path, it will maintain its previous state.
Exit1-DR
While in this state, a rising edge on JTCLK will put the controller in the Update-DR state, which terminates the scanning process, if JTMS is HIGH. A rising edge on JTCLK with JTMS LOW will put the controller in the PauseDR state.
Pause-DR
Shifting of the test registers is halted while in this state. All test registers selected by the current instruction will retain their previous state. The controller will remain in this state while JTMS is LOW. A rising edge on JTCLK with JTMS HIGH will put the controller in the Exit2-DR state.
Exit2-DR
A rising edge on JTCLK with JTMS HIGH while in this state will put the controller in the Update-DR state and terminate the scanning process. A rising edge on JTCLK with JTMS LOW will enter the Shift-DR state.
175 of 181
DS33Z44 Quad Ethernet Mapper
Update-DR
A falling edge on JTCLK while in the Update-DR state will latch the data from the shift register path of the test registers into the data output latches. This prevents changes at the parallel output due to changes in the shift register.
Select-IR-Scan
All test registers retain their previous state. The instruction register will remain unchanged during this state. With JTMS LOW, a rising edge on JTCLK moves the controller into the Capture-IR state and will initiate a scan sequence for the instruction register. JTMS HIGH during a rising edge on JTCLK puts the controller back into the Test-Logic-Reset state.
Capture-IR
The Capture-IR state is used to load the shift register in the instruction register with a fixed value. This value is loaded on the rising edge of JTCLK. If JTMS is HIGH on the rising edge of JTCLK, the controller will enter the Exit1-IR state. If JTMS is LOW on the rising edge of JTCLK, the controller will enter the Shift-IR state.
Shift-IR
In this state, the shift register in the instruction register is connected between JTDI and JTDO and shifts data one stage for every rising edge of JTCLK towards the serial output. The parallel register, as well as all test registers, remains at their previous states. A rising edge on JTCLK with JTMS HIGH will move the controller to the Exit1-IR state. A rising edge on JTCLK with JTMS LOW will keep the controller in the Shift-IR state while moving data one stage thorough the instruction shift register.
Exit1-IR
A rising edge on JTCLK with JTMS LOW will put the controller in the Pause-IR state. If JTMS is HIGH on the rising edge of JTCLK, the controller will enter the Update-IR state and terminate the scanning process.
Pause-IR
Shifting of the instruction shift register is halted temporarily. With JTMS HIGH, a rising edge on JTCLK will put the controller in the Exit2-IR state. The controller will remain in the Pause-IR state if JTMS is LOW during a rising edge on JTCLK.
Exit2-IR
A rising edge on JTCLK with JTMS LOW will put the controller in the Update-IR state. The controller will loop back to Shift-IR if JTMS is HIGH during a rising edge of JTCLK in this state.
Update-IR
The instruction code shifted into the instruction shift register is latched into the parallel output on the falling edge of JTCLK as the controller enters this state. Once latched, this instruction becomes the current instruction. A rising edge on JTCLK with JTMS held low will put the controller in the Run-Test-Idle state. With JTMS HIGH, the controller will enter the Select-DR-Scan state.
176 of 181
DS33Z44 Quad Ethernet Mapper
Figure 12-2. Tap Controller State Diagram
Test Logic Reset 0 Run Test/ Idle 1 Select DR-Scan 0 1 Capture DR 0 Shift DR 1 Exit DR 0 Pause DR 1 0 Exit2 DR 1 Update DR 1 0 0 0 1 0 1 1 Select IR-Scan 0 Capture IR 0 Shift IR 1 Exit IR 0 Pause IR 1 Exit2 IR 1 Update IR 1 0 0 1 0 1
1
0
12.2 Instruction Register
The instruction register contains a shift register as well as a latched parallel output and is 3 bits in length. When the TAP controller enters the Shift-IR state, the instruction shift register is connected between JTDI and JTDO. While in the Shift-IR state, a rising edge on JTCLK with JTMS LOW will shift the data one stage towards the serial output at JTDO. A rising edge on JTCLK in the Exit1-IR state or the Exit2-IR state with JTMS HIGH will move the controller to the Update-IR state. The falling edge of that same JTCLK will latch the data in the instruction shift register to the instruction parallel output. Instructions supported by the DS33Z44 and its respective operational binary codes are shown in Table 12-1.
177 of 181
DS33Z44 Quad Ethernet Mapper
Table 12-1. Instruction Codes for IEEE 1149.1 Architecture
INSTRUCTION SAMPLE:PRELOAD BYPASS EXTEST CLAMP HIGHZ IDCODE SELECTED REGISTER Boundary Scan Bypass Boundary Scan Bypass Bypass Device Identification INSTRUCTION CODES 010 111 000 011 100 001
12.2.1 SAMPLE:PRELOAD
This is a mandatory instruction for the IEEE 1149.1 specification. This instruction supports two functions. The digital I/Os of the device can be sampled at the boundary scan register without interfering with the normal operation of the device by using the Capture-DR state. SAMPLE:PRELOAD also allows the device to shift data into the boundary scan register via JTDI using the Shift-DR state.
12.2.2 BYPASS
When the BYPASS instruction is latched into the parallel instruction register, JTDI connects to JTDO through the one-bit bypass test register. This allows data to pass from JTDI to JTDO not affecting the device's normal operation.
12.2.3 EXTEST
This allows testing of all interconnections to the device. When the EXTEST instruction is latched in the instruction register, the following actions occur. Once enabled via the Update-IR state, the parallel outputs of all digital output pins are driven. The boundary scan register is connected between JTDI and JTDO. The Capture-DR will sample all digital inputs into the boundary scan register.
12.2.4 CLAMP
All digital outputs of the device will output data from the boundary scan parallel output while connecting the bypass register between JTDI and JTDO. The outputs will not change during the CLAMP instruction.
12.2.5 HIGHZ
All digital outputs of the device are placed in a high-impedance state. The BYPASS register is connected between JTDI and JTDO.
12.2.6 IDCODE
When the IDCODE instruction is latched into the parallel instruction register, the identification test register is selected. The device identification code is loaded into the identification register on the rising edge of JTCLK following entry into the Capture-DR state. Shift-DR can be used to shift the identification code out serially via JTDO. During Test-Logic-Reset, the identification code is forced into the instruction register's parallel output. The ID code will always have a `1' in the LSB position. The next 11 bits identify the manufacturer's JEDEC number and number of continuation bytes followed by 16 bits for the device and 4 bits for the version.
178 of 181
DS33Z44 Quad Ethernet Mapper
12.3 JTAG ID Codes Table 12-2. ID Code Structure
DEVICE DS33Z44 REVISION ID[31:28] 0000 DEVICE CODE ID[27:12] 0000 0000 0110 0011 MANUFACTURER'S CODE ID[11:1] 000 1010 0001 REQUIRED ID[0] 1
12.4 Test Registers
IEEE 1149.1 requires a minimum of two test registers; the bypass register and the boundary scan register. An optional test register has been included with the DS33Z44 design. This test register is the identification register and is used in conjunction with the IDCODE instruction and the Test-Logic-Reset state of the TAP controller.
12.5 Boundary Scan Register
This register contains both a shift register path and a latched parallel output for all control cells and digital I/O cells and is n bits in length.
12.6 Bypass Register
This is a single one-bit shift register used in conjunction with the BYPASS, CLAMP, and HIGHZ instructions, which provides a short path between JTDI and JTDO.
12.7 Identification Register
The identification register contains a 32-bit shift register and a 32-bit latched parallel output. This register is selected during the IDCODE instruction and when the TAP controller is in the Test-Logic-Reset state.
179 of 181
DS33Z44 Quad Ethernet Mapper
12.8 JTAG Functional Timing
This functional timing for the JTAG circuits shows: * * * * * The JTAG controller starting from reset state Shifting out the first 4 LSB bits of the IDCODE Shifting in the BYPASS instruction (111) while shifting out the mandatory X01 pattern Shifting the TDI pin to the TDO pin through the bypass shift register An asynchronous reset occurs while shifting
Figure 12-3. JTAG Functional Timing
(INST) (STATE) JTCLK JTRST JTMS JTDI JTDO Output Pin X X X Output pin level change if in "EXTEST" instruction mode X X X
Reset Run Test Idle Select DR Scan Capture DR
IDCODE
Shift DR Exit1 DR Update DR Select DR Scan Select IR Scan Capture IR Shift IR Exit1 IR Update IR Select DR Scan
BYPASS
Capture DR Shift DR
IDCODE
Test Logic Idle
180 of 181
DS33Z44 Quad Ethernet Mapper
13 PACKAGE INFORMATION
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/DallasPackInfo.)
13.1 17mm x 17mm 256-CSBGA
181 of 181
Maxim/Dallas Semiconductor cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim/Dallas Semiconductor product. No circuit patent licenses are implied. Maxim/Dallas Semiconductor reserves the right to change the circuitry and specifications without notice at any time.
Ma x i m I n t e g r a t e d P r o d u c t s , 1 2 0 S a n G a b r i e l D r i v e , S u n n y v a l e , C A 9 4 0 8 6 4 0 8 - 7 3 7 - 7 6 0 0
(c) 2004 Maxim Integrated Products * Printed USA are registered trademarks of Maxim Integrated Products, Inc., and Dallas Semiconductor Corporation.

▲Up To Search▲

Price & Availability of DS33Z44

	To Download DS33Z44 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .