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| DM9000A Ethernet Controller with General Processor Interface DAVICOM Semiconductor, Inc. DM9000A Ethernet Controller with General Processor Interface DATA SHEET Preliminary Version: DM9000A-DS-P03 Apr. 21, 2005 Preliminary Version: DM9000A-DS-P03 Apr. 21, 2005 1 DM9000A Ethernet Controller with General Processor Interface Content 1. General Description............................................................................................................6 2. Block Diagram ...................................................................................................................6 3. Feature................................................................................................................................7 4. Pin Configuration...............................................................................................................8 4.1 Pin Configuration I: 16-bit mode..................................................................................................8 4.2 Pin Configuration II: 8-bit mode..................................................................................................9 5. Pin Description..................................................................................................................10 5.1 Processor Interface.................................................................................................................10 5.1.1 8-bit mode ........................................................................................................................10 5.2 EEPROM Interface................................................................................................................11 5.3 Clock Interface.....................................................................................................................11 5.4 LED Interface.......................................................................................................................11 5.5 10/100 PHY/Fiber..................................................................................................................11 5.6 Miscellaneous.......................................................................................................................12 5.7 Power Pins..........................................................................................................................12 5.8 strap pins table ......................................................................................................................12 6. Vendor Control and Status Register Set.............................................................................13 6.1Network Control Register (00H)...................................................................................................14 6.2 Network Status Register (01H)...................................................................................................15 6.3 TX Control Register (02H)........................................................................................................15 6.4 TX Status Register I ( 03H ) for packet index I................................................................................15 6.5 TX Status Register II ( 04H ) for packet index I I..............................................................................16 6.6 RX Control Register ( 05H ).......................................................................................................16 6.7 RX Status Register ( 06H ).........................................................................................................16 Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 2 DM9000A Ethernet Controller with General Processor Interface 6.8 Receive Overflow Counter Register ( 07H )...................................................................................17 6.9 Back Pressure Threshold Register (08H).............................................................. ........................17 6.10 Flow Control Threshold Register ( 09H )....................................................................................17 6.11 RX/TX Flow Control Register ( 0AH ).......................................................................................18 6.12 EEPROM & PHY Control Register ( 0BH )................................................................................18 6.13 EEPROM & PHY Address Register ( 0CH )................................................................................18 6.14 EEPROM & PHY Data Register (0DH~0EH) .............................................................................18 6.15 Wake Up Control Register ( 0FH )...........................................................................................19 6.16 Physical Address Register ( 10H~15H ).....................................................................................19 6.17 Multicast Address Register ( 16H~1DH ) ...................................................................................19 6.18 General purpose control Register ( 1EH ).................................................................................19 6.19 General purpose Register ( 1FH )............................................................................................20 6.20 TX SRAM Read Pointer Address Register (22H~23H)...................................................................20 6.21 RX SRAM Write Pointer Address Register (24H~25H)..................................................................20 6.22 Vendor ID Register (28H~29H)..............................................................................................20 6.23 Product ID Register (2AH~2BH)............................................................................................20 6.24Chip Revision Register (2CH).................................................................................................20 6.25Transmit Control Register 2 ( 2DH ) .........................................................................................20 6.26 Operation Test Control Register ( 2EH ).....................................................................................21 6.27 Special Mode Control Register ( 2FH )......................................................................................21 6.28Early Transmit Control/Status Register ( 30H )............................................................................22 6.29Check Sum Control Register ( 31H ).........................................................................................22 6.30 Receive Check Sum Control Status Register ( 32H )......................................................................22 6.31 Memory Data Pre-Fetch Read Command without Address Increment (F0H)..........................................23 6.32 Memory Data Read Command without Address Increment Register (F1H)............................................23 6.33 Memory Data Read Command with Address Increment Register (F2H) ...............................................23 6.34 Memory Data Read_address Register (F4H~F5H).........................................................................23 6.35 Memory Data Write Command without Address Increment Register (F6H)...........................................23 6.36 Memory data write command with address increment Register (F8H)..................................................23 6.37 Memory data write_address Register (FAH~FBH).........................................................................23 6.38 TX Packet Length Register (FCH~FDH)....................................................................................23 6.39 Interrupt Status Register (FEH)...............................................................................................24 6.40 Interrupt Mask Register (FFH)................................................................................................24 Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 3 DM9000A Ethernet Controller with General Processor Interface 7. EEPROM Format..............................................................................................................25 8. PHY Register Description...................................................................................................26 8.1 Basic Mode Control Register (BMCR) - 00...................................................................................27 8.2 Basic Mode Status Register (BMSR) - 01.....................................................................................28 8.3 PHY ID Identifier Register #1 (PHYIDR1) - 02..............................................................................29 8.4 PHY ID Identifier Register #2 (PHYIDR2) - 03..............................................................................30 8.5 Auto-negotiation Advertisement Register (ANAR) - 04.....................................................................31 8.6 Auto-negotiation Link Partner Ability Register (ANLPAR) - 05..........................................................32 8.7 Auto-negotiation Expansion Register (ANER)- 06...........................................................................33 8.8 DAVICOM Specified Configuration Register (DSCR) -16.................................................................33 8.9 DAVICOM Specified Configuration and Status Register (DSCSR) -17 .................................................35 8.10 10Base-T Configuration / Status (10BTCSR) - 18..........................................................................36 8.11 Power Down Control Register (PWDOR) - 19..............................................................................37 8.12(Specified config) Register - 20................................................................................................37 9. Functional Description ......................................................................................................39 9.1 Host Interface.......................................................................................................................39 9.2 Direct Memory Access Control .................................................................................................39 9.3 Packet Transmission..............................................................................................................39 9.4 Packet Reception..................................................................................................................39 9.5 100Base-TX Operation...........................................................................................................40 9.6 100Base-TX Receiver.............................................................................................................42 9.7 10Base-T Operation...............................................................................................................43 9.8 Collision Detection................................................................................................................43 9.9 Carrier Sense.......................................................................................................................43 9.10 Auto-Negotiation.................................................................................................................43 9.11 Power Reduced Mode...........................................................................................................44 10. DC and AC Electrical Characteristics...............................................................................45 10.1 Absolute Maximum Ratings(2 Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 )............................................................................................45 4 DM9000A Ethernet Controller with General Processor Interface 10.1.1 Operating Conditions..........................................................................................................45 10.2 DC Electrical Characteristics (VDD = 3.3V).................................................................................45 10.3 AC Electrical Characteristics & Timing Waveform.........................................................................46 10.3.1 TP Interface....................................................................................................................46 10.3.2 Oscillator/Crystal Timing....................................................................................................46 10.3.3 Processor Register Read Timing............................................................................................46 10.3.4 Processor Register Write Timing............................................................................................47 10.3.5 EEPROM Interface Timing...................................................................................................48 11. Application Notes.............................................................................................................49 11.1 Network Interface Signal Routing..............................................................................................49 11.2 10Base-T/100Base-TX (Auto MDIX Application)...........................................................................49 11.3 10Base-T/100Base-TX (Non Auto MDIX Application).....................................................................50 11.4 Power Decoupling Capacitors...................................................................................................51 11.5 Ground Plane Layout.............................................................................................................52 11.6 Power Plane Partitioning.........................................................................................................53 11.7 Magnetics Selection Guide.......................................................................................................54 11.8 Crystal Selection Guide...........................................................................................................54 12. Package Information......................................................................................................55 13. Ordering Information.....................................................................................................56 Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 5 DM9000A Ethernet Controller with General Processor Interface 1. General Description The DM9000A is a fully integrated and cost-effective low pin count single chip Fast Ethernet controller with a general processor interface, a 10/100M PHY and 4K Dword SRAM. It is designed with low power and high performance process that support 3.3V with 5V IO tolerance. The DM9000A supports 8-bit and 16-bit data interfaces to internal memory accesses for various processors. The PHY of the DM9000A can interface to the UTP3, 4, 5 in 10Base-T and UTP5 in 100Base-TX with AUTO-MDIX. It is fully compliant with the IEEE 802.3u Spec. Its auto-negotiation function will automatically configure the DM9000A to take the maximum advantage of its abilities. The DM9000A also supports IEEE 802.3x fullduplex flow control.. 2. Block Diagram LED EEPROM Interface PHYceiver 100 Base-TX transceiver TX+/AUTO-MDIX RX+/10 Base-T Tx/Rx 100 Base-TX PCS MII MAC TX Machine Control &Status Registers Memory Management RX Machine Internal SRAM Autonegotiation MII Management Control & MII Register Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 Processor Interface 6 DM9000A Ethernet Controller with General Processor Interface 3. Features 48-pin LQFP Supports processor interface: byte/word of I/O command to internal memory data operation Integrated 10/100M transceiver with AUTO-MDIX Supports back pressure mode for half-duplex mode flow control IEEE802.3x flow control for full-duplex mode Supports wakeup frame, link status change and magic packet events for remote wake up Integrated 16K Byte SRAM Build in 3.3V to 2.5V regulator Supports early Transmit Supports IP/TCP/UDP checksum generation and checking Supports automatically load vendor ID and product ID from EEPROM Optional EEPROM configuration Very low power consumption mode: Power reduced mode (cable detection) Power down mode Selectable TX drivers for 1:1 or 1.25:1 transformers for additional power reduction. Compatible with 3.3V and 5.0V tolerant I/O Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 7 DM9000A Ethernet Controller with General Processor Interface 4. Pin Configuration 4.1 (16-bit mode) IOW# SD10 SD11 27 SD12 26 36 35 34 33 32 31 30 29 28 CS# LED2 LED1 PWRST# TEST VDD X2 X1 GND SD RXGND BGGND 37 38 39 40 41 42 43 44 45 46 47 48 10 11 12 1 2 3 4 5 6 7 8 9 25 24 23 22 21 20 19 18 17 16 15 14 13 SD13 IOR# CMD GND VDD SD8 SD9 INT SD14 VDD SD15 EECS EECK EEDIO SD0 SD1 SD2 GND SD3 SD4 DM9000A (16-bit mode) BGRES RX+ RXGND TXGND TX+ SD7 RXVDD25 Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 TXVDD25 SD6 SD5 RX- TX- 8 DM9000A Ethernet Controller with General Processor Interface 4.2 (8-bit mode) IOW# IOR# GND CMD VDD 36 35 34 33 32 31 30 29 28 27 26 CS# LED2 LED1 PWRST# TEST VDD X2 X1 GND SD RXGND BGGND 37 38 39 40 41 42 43 44 45 46 47 48 10 11 12 1 2 3 4 5 6 7 8 9 25 24 23 22 21 20 19 18 17 16 15 14 13 GP6 GP1 GP2 GP3 GP4 GP5 INT LED3 VDD WAKE EECS EECK EEDIO SD0 SD1 SD2 GND SD3 SD4 DM9000A (8-bit mode) RX- RXGND TXGND RX+ TX+ TX- TXVDD25 SD7 SD6 Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 RXVDD25 BGRES SD5 9 DM9000A Ethernet Controller with General Processor Interface 5. Pin Description I = Input # = asserted low 5.1 Processor Interface Pin No. 35 Pin Name IOR# Type I,PD Description Processor Read Command This pin is low active at default, its polarity can be modified by EEPROM setting. See the EEPROM content description for detail Processor Write Command This pin is low active at default, its polarity can be modified by EEPROM setting. See the EEPROM content description for detail Chip Select A default low active signal used to select the DM9000A. Its polarity can be modified by EEPROM setting. See the EEPROM content description for detail. O = Output I/O = Input/Output O/D = Open Drain P = Power PD = internal pull-low about 60K 36 IOW# I,PD 37 CS# I,PD 32 CMD 34 18,17,16,1 4,13,12,11 ,10 31,29,28,2 7,26,25,24 ,22 INT Command Type When high, the access of this command cycle is DATA port When low, the access of this command cycle is INDEX port Interrupt Request This pin is high active at default, its polarity can be modified by EEPROM O,PD setting or by strap pin EECK. See the EEPROM content description for detail I,PD Processor Data Bus bit 0~7 I/O,PD Processor Data Bus bit 8~15 In 16-bit mode, these pins act as the processor data bus bit 8~15; I/O,PD When EECS pin is pulled high , they have other definitions. See 8-bit mode pin description for details. SD0~7 SD8~15 5.1.1 8-bit mode pins Pin No. Pin Name Type Description 22 WAKE 24 LED3 25,26,27 GP6~4 O,PD Issue a wake up signal when wake up event happens Full-duplex LED In LED mode 1, Its low output indicates that the internal PHY is operated in full-duplex mode, or it is floating for the half-duplex mode of the O,PD internal PHY In LED mode 0, Its low output indicates that the internal PHY is operated in 10M mode, or it is floating for the 100M mode of the internal PHY Note: LED mode is defined in EEPROM setting. General Purpose output pins: These pins are output only for general purpose that are configured by register 1Fh. O,PD GP6 pin also act as trap pin for the INT output type. When GP6 is pulled high, the INT is Open-Drain output type; Otherwise it is force output type. 10 Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 DM9000A Ethernet Controller with General Processor Interface 28,29,31 GP3,GP2,GP1 I/O General I/O Ports Registers GPCR and GPR can program these pins These pins are input ports at default. 5.2 EEPROM Interface Pin No. Pin Name Type Description 19 20 EEDIO EECK I/O,PD IO Data to EEPROM Clock to EEPROM O,PD This pin is also used as the strap pin of the polarity of the INT pin When this pin is pulled high, the INT pin is low active; otherwise the INT pin is high active 21 EECS Chip Select to EEPROM This pin is also used as a strap pin to define the internal memory data O,PD bus width. When it is pulled high, the memory access bus is 8-bit; Otherwise it is 16-bit. Type Description 5.3 Clock Interface Pin No. Pin Name 43 44 X2 X1 O I Crystal 25MHz Out Crystal 25MHz In 5.4 LED Interface Pin No. Pin Name Type Description 39 LED1 O 38 LED2 O Speed LED Its low output indicates that the internal PHY is operated in 100M/S, or it is floating for the 10M mode of the internal PHY. This pin also acts as ISA bus IO16 defined in EEPROM setting in 16-bit mode. Link / Active LED In LED mode 1, it is the combined LED of link and carrier sense signal of the internal PHY In LED mode 0, it is the LED of the carrier sense signal of the internal PHY only This pin also acts as ISA bus IOWAIT or WAKE defined in EEPROM setting in 16-bit mode. 5.5 10/100 PHY/Fiber Pin No. Pin Name Type Description 46 48 1 Preliminary datasheet SD BGGND BGRES I P I/O Fiber-optic Signal Detect PECL signal, which indicates whether or not the fiber-optic receive pair is receiving valid levels Bandgap Ground Bandgap Pin 11 Version: DM9000A-DS-P03 Apr. 21, 2005 DM9000A Ethernet Controller with General Processor Interface 2 9 3 4 5,47 6 7 8 RXVDD25 TXVDD25 RX+ RXRXGND TXGND TX+ TXP P I/O I/O P P I/O I/O 2.5V power output for TP RX 2.5V power output for TP TX TP RX Input TP RX Input RX Ground TX Ground TP TX Output TP TX Output 5.6 Miscellaneous Pin No. Pin Name Type Description 41 40 TEST PWRST# I I Operation Mode Force to ground in normal application Power on Reset Active low signal to initiate the DM9000A The DM9000A is ready after 5us when this pin deasserted 5.7 Power Pins Pin No. Pin Name Type Description 23,30,42 15,33,45 VDD GND P P Digital VDD 3.3V power input Digital GND 5.8 strap pins table 1: pull-high 1K~10K, 0: floating (default) Pin No. 20 Pin Name EECK Polarity of INT 1: INT pin low active; 0: INT pin high active DATA Bus Width 1: 8-bit 0: 16-bit INT output type in 8-bit mode 1: Open-Drain 0: force mode Description 21 25 EECS GP6 Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 12 DM9000A Ethernet Controller with General Processor Interface 6. Vendor Control and Status Register Set The DM9000A implements several control and status registers, which can be accessed by the host. These CSRs Register NCR NSR TCR TSR I TSR II RCR RSR ROCR BPTR FCTR FCR EPCR EPAR EPDRL EPDRH WCR PAR MAR GPCR GPR TRPAL TRPAH RWPAL RWPAH VID PID CHIPR TCR2 OCR SMCR ETXCSR TCSCR RCSCSR MRCMDX MRCMDX1 MRCMD Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 are byte aligned. All CSRs are set to their default values by hardware or software reset unless they are specified Offset 00H 01H 02H 03H 04H 05H 06H 07H 08H 09H 0AH 0BH 0CH 0DH 0EH 0FH 10H-15H 16H-1DH 1EH 1FH 22H 23H 24H 25H 28H-29H 2AH-2BH 2CH 2DH 2EH 2FH 30H 31H 32H F0H F1H F2H Default value after reset 00H 00H 00H 00H 00H 00H 00H 00H 37H 38H 00H 00H 40H XXH XXH 00H Determined by EEPROM XXH 01H XXH 00H 00H 00H 0CH 0A46H 9000H 18H 00H 00H 00H 00H 00H 00H XXH XXH XXH 13 Description Network Control Register Network Status Register TX Control Register TX Status Register I TX Status Register II RX Control Register RX Status Register Receive Overflow Counter Register Back Pressure Threshold Register Flow Control Threshold Register RX Flow Control Register EEPROM & PHY Control Register EEPROM & PHY Address Register EEPROM & PHY Low Byte Data Register EEPROM & PHY High Byte Data Register Wake Up Control Register (in 8-bit mode) Physical Address Register Multicast Address Register General Purpose Control Register (in 8-bit mode) General Purpose Register TX SRAM Read Pointer Address Low Byte TX SRAM Read Pointer Address High Byte RX SRAM Write Pointer Address Low Byte RX SRAM Write Pointer Address High Byte Vendor ID Product ID CHIP Revision TX Control Register 2 Operation Control Register Special Mode Control Register Early Transmit Control/Status Register Transmit Check Sum Control Register Receive Check Sum Control Status Register Memory Data Pre-Fetch Read Command Without Address Increment Register Memory Data Read Command With Address Increment Register Memory Data Read Command With Address Increment Register DM9000A Ethernet Controller with General Processor Interface MRRL MRRH MWCMDX MWCMD MWRL MWRH TXPLL TXPLH ISR IMR Memory Data Read_ address Register Low Byte Memory Data Read_ address Register High Byte Memory Data Write Command Without Address Increment Register Memory Data Write Command With Address Increment Register Memory Data Write_ address Register Low Byte Memory Data Write _ address Register High Byte TX Packet Length Low Byte Register TX Packet Length High Byte Register Interrupt Status Register Interrupt Mask Register F4H F5H F6H F8H FAH FBH FCH FDH FEH FFH 00H 00H XXH XXH 00H 00H XXH XXH 00H 00H Key to Default In the register description that follows, the default column takes the form: E = default value from EEPROM T = default value from strap pin 2:1 LBK 0 RST Description Reserved Wakeup Event Enable work in 8-bit mode When set, it enables the wakeup function. Clearing this bit will also clears all wakeup event status This bit will not be affected after a software reset Reserved Force Collision Mode, used for testing Full-Duplex Mode of the internal PHY. Loopback Mode Bit 2 1 00 Normal 01 MAC Internal loopback 10 Internal PHY 100M mode digital loopback 11 (Reserved) Software reset and auto clear after 10us Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 14 DM9000A Ethernet Controller with General Processor Interface 6.2 Network Status Register (01H) Bit 7 6 5 4 3 2 1 0 Name SPEED LINKST WAKEST RESERVED TX2END TX1END RXOV RESERVED Default X,RO X,RO P0, RW/C1 0,RO PHS0, RW/C1 PHS0, RW/C1 PHS0,RO 0,RO Description Media Speed 0:100Mbps 1:10Mbps, when Internal PHY is used. This bit has no meaning when LINKST=0 Link Status 0:link failed 1:link OK, Wakeup Event Status. Clears by read or write 1 (work in 8-bit mode) This bit will not be affected after software reset Reserved TX Packet 2 Complete Status. Clears by read or write 1 Transmit completion of packet index 2 TX Packet 1 Complete status. Clears by read or write 1 Transmit completion of packet index 1 RX FIFO Overflow Reserved 6.3 TX Control Register (02H) Bit Name Default 7 RESERVED 0,RO 6 5 4 3 2 1 0 TJDIS EXCECM PAD_DIS2 CRC_DIS2 PAD_DIS1 CRC_DIS1 TXREQ PHS0,RW PHS0,RW PHS0,RW PHS0,RW PHS0,RW PHS0,RW PHS0,RW Description Reserved Transmit Jabber Disable When set, the transmit Jabber Timer (2048 bytes) is disabled. Otherwise it is Enable Excessive Collision Mode Control : 0:aborts this packet when excessive collision counts more than 15, 1: still tries to transmit this packet PAD Appends Disable for Packet Index 2 CRC Appends Disable for Packet Index 2 PAD Appends Disable for Packet Index 1 CRC Appends Disable for Packet Index 1 TX Request. Auto clears after sending completely 6.4 TX Status Register I ( 03H ) for packet index I Bit Name Default Description Transmit Jabber Time Out 7 TJTO PHS0,RO It is set to indicate that the transmitted frame is truncated due to more than 2048 bytes are transmitted Loss of Carrier 6 LC PHS0,RO It is set to indicate the loss of carrier during the frame transmission. It is not valid in internal loopback mode No Carrier 5 NC PHS0,RO It is set to indicate that there is no carrier signal during the frame transmission. It is not valid in internal loopback mode Late Collision 4 LC PHS0,RO It is set when a collision occurs after the collision window of 64 bytes Collision Packet 3 COL PHS0,RO It is set to indicate that the collision occurs during transmission Excessive Collision 2 EC PHS0,RO It is set to indicate that the transmission is aborted due to 16 excessive collisions 1:0 RESERVED 0,RO Reserved Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 15 DM9000A Ethernet Controller with General Processor Interface 6.5 TX Status Register II ( 04H ) for packet index I I Bit Name Default Description Transmit Jabber Time Out 7 TJTO PHS0,RO It is set to indicate that the transmitted frame is truncated due to more than 2048 bytes are transmitted Loss of Carrier 6 LC PHS0,RO It is set to indicate the loss of carrier during the frame transmission. It is not valid in internal loopback mode No Carrier 5 NC PHS0,RO It is set to indicate that there is no carrier signal during the frame transmission. It is not valid in internal loopback mode Late Collision 4 LC PHS0,RO It is set when a collision occurs after the collision window of 64 bytes 3 COL PHS0,RO Collision packet, collision occurs during transmission Excessive Collision 2 EC PHS0,RO It is set to indicate that the transmission is aborted due to 16 excessive collisions 1:0 RESERVED 0,RO Reserved 6.6 RX Control Register ( 05H ) Bit Name Default 7 RESERVED PHS0,RW 6 5 4 3 2 1 0 WTDIS DIS_LONG DIS_CRC ALL RUNT PRMSC RXEN PHS0,RW PHS0,RW PHS0,RW PHS0,RW PHS0,RW PHS0,RW PHS0,RW Description Reserved Watchdog Timer Disable When set, the Watchdog Timer (2048 bytes) is disabled. Otherwise it is enabled Discard Long Packet Packet length is over 1522byte Discard CRC Error Packet Pass All Multicast Pass Runt Packet Promiscuous Mode RX Enable 6.7 RX Status Register ( 06H ) Bit Name Default 7 6 5 4 3 2 1 0 RF MF LCS RWTO PLE AE CE FOE PHS0,RO PHS0,RO PHS0,RO PHS0,RO PHS0,RO PHS0,RO PHS0,RO PHS0,RO Description Runt Frame It is set to indicate that the size of the received frame is smaller than 64 bytes Multicast Frame It is set to indicate that the received frame has a multicast address Late Collision Seen It is set to indicate that a late collision is found during the frame reception Receive Watchdog Time-Out It is set to indicate that it receives more than 2048 bytes Physical Layer Error It is set to indicate that a physical layer error is found during the frame reception Alignment Error It is set to indicate that the received frame ends with a non-byte boundary CRC Error It is set to indicate that the received frame ends with a CRC error FIFO Overflow Error It is set to indicate that a FIFO overflow error happens during the frame reception Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 16 DM9000A Ethernet Controller with General Processor Interface 6.8 Receive Overflow Counter Register ( 07H ) Bit Name Default Description Receive Overflow Counter Overflow 7 RXFU PHS0,R/C This bit is set when the ROC has an overflow condition Receive Overflow Counter 6:0 ROC PHS0,R/C This is a statistic counter to indicate the received packet count upon FIFO overflow 6.9 Back Pressure Threshold Register (08H) Bit Name Default Description Back Pressure High Water Overflow Threshold. MAC will generate the jam pattern when RX SRAM free space is lower than this threshold value PHS3, 7:4 BPHW RW The default is 3K-byte free space. Please do not exceed SRAM size (1 unit=1K bytes) Jam Pattern Time. Default is 200us bit3 bit2 bit1 bit0 time 0000 5us 0001 10us 0010 15us 0011 25us 0100 50us 0101 100us PHS7, 0110 150us 3:0 JPT RW 0111 200us 1000 250us 1001 300us 1010 350us 1011 400us 1100 450us 1101 500us 1110 550us 1111 600us 6.10 Flow Control Threshold Register ( 09H ) Bit Name Default Description RX FIFO High Water Overflow Threshold Send a pause packet with pause_ time=FFFFH when the RX RAM free space is PHS3, less than this value., If this value is zero, its means no free RX SRAM space. The 7:4 HWOT RW default value is 3K-byte free space. Please do not exceed SRAM size (1 unit=1K bytes) RX FIFO Low Water Overflow Threshold Send a pause packet with pause_time=0000 when RX SRAM free space is larger PHS8, than this value. This pause packet is enabled after the high water pause packet is 3:0 LWOT RW transmitted. The default SRAM free space is 8K-byte. Please do not exceed SRAM size (1 unit=1K bytes) Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 17 DM9000A Ethernet Controller with General Processor Interface 6.11 RX/TX Flow Control Register ( 0AH ) Bit Name Default Description TX Pause Packet 7 TXP0 HPS0,RW Auto clears after pause packet transmission completion. Set to TX pause packet with time = 0000h TX Pause packet 6 TXPF HPS0,RW Auto clears after pause packet transmission completion. Set to TX pause packet with time = FFFFH Force TX Pause Packet Enable 5 TXPEN HPS0,RW Enables the pause packet for high/low water threshold control Back Pressure Mode 4 BKPA HPS0,RW This mode is for half duplex mode only. It generates a jam pattern when any packet comes and RX SRAM is over BPHW of register 8. Back Pressure Mode 3 BKPM HPS0,RW This mode is for half duplex mode only. It generates a jam pattern when a packet's DA matches and RX SRAM is over BPHW of register 8. 2 RXPS HPS0,R/C RX Pause Packet Status, latch and read clearly 1 RXPCS HPS0,RO RX Pause Packet Current Status Flow Control Enable 0 FLCE HPS0,RW Set to enable the flow control mode (i.e. can disable DM9000A TX function) 6.12 EEPROM & PHY Control Register ( 0BH ) Bit Name Default Description 7:6 RESERVED 0,RO Reserved 5 REEP PH0,RW Reload EEPROM. Driver needs to clear it up after the operation completes 4 WEP PH0,RW Write EEPROM Enable EEPROM or PHY Operation Select 3 EPOS PH0,RW When reset, select EEPROM; when set, select PHY EEPROM Read or PHY Register Read Command. Driver needs to clear it up after 2 ERPRR PH0,RW the operation completes. EEPROM Write or PHY Register Write Command. Driver needs to clear it up after 1 ERPRW PH0,RW the operation completes. EEPROM Access Status or PHY Access Status 0 ERRE PH0,RO When set, it indicates that the EEPROM or PHY access is in progress 6.13 EEPROM & PHY Address Register ( 0CH ) Bit Name Default Description PHY Address bit 1 and 0, the PHY address bit [4:2] is force to 0. Force to 01 in 7:6 PHY_ADR PH01,RW application. 5:0 EROA PH0,RW EEPROM Word Address or PHY Register Number. 6.14 EEPROM & PHY Data Register (EE_PHY_L 0DH EE_PHY_H 0EH) Bit Name Default Description EEPROM or PHY Low Byte Data 7:0 EE_PHY_L PH0,RW The low-byte data read from or write to EEPROM or PHY. EEPROM or PHY High Byte Data 7:0 EE_PHY_H PH0,RW The high-byte data read from or write to EEPROM or PHY. Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 18 DM9000A Ethernet Controller with General Processor Interface 6.15 Wake Up Control Register ( 0FH ) (in 8-bit mode) Bit Name Type Description Reserved 7:6 RESERVED 0,RO When set, it enables Link Status Change Wake up Event 5 LINKEN P0,RW This bit will not be affected after software reset When set, it enables Sample Frame Wake up Event 4 SAMPLEEN P0,RW This bit will not be affected after software reset When set, it enables Magic Packet Wake up Event 3 MAGICEN P0,RW This bit will not be affected after software reset When set, it indicates that Link Change and Link Status Change Event occurred 2 LINKST P0,RO This bit will not be affected after software reset When set, it indicates that the sample frame is received and Sample Frame Event 1 SAMPLEST P0,RO occurred. This bit will not be affected after software reset When set, indicates the Magic Packet is received and Magic packet Event 0 MAGICST P0,RO occurred. This bit will not be affected after a software reset 6.16 Physical Address Register ( 10H~15H ) Bit Name Default 7:0 PAB5 E,RW Physical Address Byte 5 7:0 PAB4 E,RW Physical Address Byte 4 7:0 PAB3 E,RW Physical Address Byte 3 7:0 PAB2 E,RW Physical Address Byte 2 7:0 PAB1 E,RW Physical Address Byte 1 7:0 PAB0 E,RW Physical Address Byte 0 Description (15H) (14H) (13H) (12H) (11H) (10H) 6.17 Multicast Address Register ( 16H~1DH ) Bit Name Default 7:0 MAB7 X,RW Multicast Address Byte 7 7:0 MAB6 X,RW Multicast Address Byte 6 7:0 MAB5 X,RW Multicast Address Byte 5 7:0 MAB4 X,RW Multicast Address Byte 4 7:0 MAB3 X,RW Multicast Address Byte 3 7:0 MAB2 X,RW Multicast Address Byte 2 7:0 MAB1 X,RW Multicast Address Byte 1 7:0 MAB0 X,RW Multicast Address Byte 0 Description (1DH) (1CH) (1BH) (1AH) (19H) (18H) (17H) (16H) 6.18 General purpose control Register ( 1EH ) (in 8-bit mode) Bit Name Default Description 7 RESERVED PH0,RO Reserved General Purpose Control 6~4 PH, 6:4 GPC64 Define the input/output direction of pins GP6~4 respectively. 111,RO These bits are all forced to "1"s, so pins GP6~4 are output only. General Purpose Control 3~1 PH, Define the input/output direction of pins GP 3~1 respectively. 3:1 GPC31 000,RW When a bit is set 1, the direction of correspondent bit of General Purpose Register is output. Other defaults are input 0 RESERVED PH1,RO Reserved Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 19 DM9000A Ethernet Controller with General Processor Interface 6.19 General purpose Register ( 1FH ) Bit Name Default Description 7 RESERVED 0,RO Reserved General Purpose Output 6~4 (in 8-bit mode) 6-4 GPO PH0,RW These bits are reflect to pin GP6~4 respectively. General Purpose (in 8-bit mode) When the correspondent bit of General Purpose Control Register is 1, the value of PH0,RW the bit is reflected to pin GP3~1 respectively. 3:1 GPIO When the correspondent bit of General Purpose Control Register is 0, the value of the bit to be read is reflected from correspondent pins of GP3~1 respectively. PHY Power Down Control 0 PHYPD ET1,RW 1: power down PHY 0: power up PHY 6.20 TX SRAM Read Pointer Address Register (22H~23H) Bit Name Default Description 7:0 TRPAH PS0,RO TX SRAM Read Pointer Address High Byte (23H) 7:0 TRPAL PS0.RO TX SRAM Read Pointer Address Low Byte (22H) 6.21 RX SRAM Write Pointer Address Register (24H~25H) Bit Name Default Description 7:0 RWPAH PS,0CH,RO RX SRAM Write Pointer Address High Byte (25H) 7:0 RWPAL PS,00H.RO RX SRAM Write Pointer Address Low Byte (24H) 6.22 Vendor ID Register (28H~29H) Bit Name Default 7:0 VIDH PHE,0AH,RO 7:0 VIDL PHE,46H.RO 6.23 Product ID Register (2AH~2BH) Bit Name Default 7:0 PIDH PHE,90H,RO 7:0 PIDL PHE,00H.RO 6.24 Chip Revision Register (2CH) Bit Name Default 7:0 CHIPR 18H,RO Description Vendor ID High Byte (29H) Vendor ID Low Byte (28H) Description Product ID High Byte (2BH) Product ID Low Byte (2AH) Description CHIP Revision 6.25 Transmit Control Register 2 ( 2DH ) Bit Name Default Description Led Mode 7 LED PH0,RW When set, the LED pins act as led mode 1. When cleared, the led mode is default mode 0 or depending EEPROM setting. Retry Late_Collision Packet 6 RLCP PH0,RW Re-transmit the packet with late-collision Disable TX Underrun Retry 5 DTU PH0,RW Disable to re-transmit the underruned packet Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 20 DM9000A Ethernet Controller with General Processor Interface 4 ONEPM PH0,RW One Packet Mode When set, only one packet transmit command can be issued before transmit completed. When cleared, at most two packet transmit command can be issued before transmit completed. Inter-Frame Gap Setting 0XXX: 96-bit 1000: 64-bit 1001: 72-bit 1010:80-bit 1011:88-bit 1100:96-bit 1101:104-bit 1110: 112-bit 1111:120-bit 3~0 IFGS PH0,RW 6.26 Operation Test Control Register ( 2EH ) Bit Name Default Description System Clock Control Set the internal system clock. 00: 50Mhz 7~6 SCC PH0,RW 01: 20MHz 10: 100MHz 11: Reserved 5 RESERVED PH0,RW Reserved 4 SOE PH0,RW Internal SRAM Output-Enable Always ON 3 SCS PH0,RW Internal SRAM Chip-Select Always ON 2~0 PHYOP PH0,RW Internal PHY operation mode for testing 6.27 Special Mode Control Register ( 2FH ) Bit Name Default 7 SM_EN PH0,RW Special Mode Enable 6~3 RESERVED PH0,RW Reserved 2 FLC PH0,RW Force Late Collision 1 FB1 PH0,RW Force Longest Back-off time 0 FB0 PH0,RW Force Shortest Back-off time Description Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 21 DM9000A Ethernet Controller with General Processor Interface 6.28 Early Transmit Control/Status Register ( 30H ) Bit Name Default Description Early Transmit Enable 7 ETE HPS0, RW Enable bits[2:0] 6 ETS2 HPS0,RO Early Transmit Status II 5 ETS1 HPS0,RO Early Transmit Status I 4~2 RESERVED 000,RO Reserved Early Transmit Threshold Start transmit when data write to TX FIFO reach the byte-count threshold 1~0 ETT HPS0,RW Bit-1 bit-0 ----- ---0 0 0 1 1 0 1 1 threshold ------------: 12.5% : 25% : 50% : 75% 6.29 Check Sum Control Register ( 31H ) Bit Name Default 7~3 RESERVED 0,RO 2 UDPCSE HPS0,RW 1 TCPCSE HPS0,RW 0 IPCSE HPS0,RW Description Reserved UDP CheckSum Generation Enable TCP CheckSum Generation Enable IP CheckSum Generation Enable 6.30 Receive Check Sum Status Register ( 32H ) Bit Name Default Description UDP CheckSum Status 7 UDPS HPS0,RO 1: checksum fail, if UDP packet TCP CheckSum Status 6 TCPS HPS0,RO 1: checksum fail, if TCP packet IP CheckSum Status 5 IPS HPS0,RO 1: checksum fail, if IP packet 4 UDPP HPS0,RO UDP Packet 3 TCPP HPS0,RO TCP Packet 2 IPP HPS0,RO IP Packet Receive CheckSum Checking Enable 1 RCSEN HPS0,RW When set, the checksum status (bit 7~2) will be stored in packet's first byte(bit 7~2) of status header respectively. Discard CheckSum Error Packet 0 DCSE HPS0,RW When set, if IP/TCP/UDP checksum field is error, this packet will be discarded. Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 22 DM9000A Ethernet Controller with General Processor Interface 6.31 Memory Data Pre-Fetch Read Command without Address Increment Register (F0H) Bit Name Default Description Read data from RX SRAM. After the read of this command, the read pointer of 7:0 MRCMDX X,RO internal SRAM is unchanged. And the DM9000A starts to pre-fetch the SRAM data to internal data buffers. 6.32 Memory Data Read Command without Address Increment Register (F1H) Bit Name Default Description Read data from RX SRAM. After the read of this command, the read pointer of 7:0 MRCMDX1 X,RO internal SRAM is unchanged 6.33 Memory Data Read Command with Address Increment Register (F2H) Bit Name Default Description Read data from RX SRAM. After the read of this command, the read pointer is 7:0 MRCMD X,RO increased by 1or 2 depends on the operator mode (8-bit or16-bit respectively) 6.34 Memory Data Read_address Register (F4H~F5H) Bit Name Default Description 7:0 MDRAH PHS0,RW Memory Data Read_ address High Byte. It will be set to 0Ch, when IMR bit7 =1 7:0 MDRAL PHS0,RW Memory Data Read_ address Low Byte 6.35 Memory Data Write Command without Address Increment Register (F6H) Bit Name Default Description Write data to TX SRAM. After the write of this command, the write pointer is 7:0 MWCMDX X,WO unchanged 6.36 Memory data write command with address increment Register (F8H) Bit Name Default Description Write Data to TX SRAM 7:0 MWCMD X,WO After the write of this command, the write pointer is increased by 1 or 2, depends on the operator mode. (8-bit or 16-bit respectively) 6.37 Memory data write_address Register (FAH~FBH) Bit Name Default Description 7:0 MDRAH PHS0,RW Memory Data Write_ address High Byte 7:0 MDRAL PHS0,RW Memory Data Write_ address Low Byte 6.38 TX Packet Length Register (FCH~FDH) Bit Name Default 7:0 TXPLH X,R/W TX Packet Length High byte 7:0 TXPLL X,,R/W TX Packet Length Low byte Description Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 23 DM9000A Ethernet Controller with General Processor Interface 6.39 Interrupt Status Register (FEH) Bit Name Default 7 6 5 4 3 2 1 0 IOMODE RESERVED LNKCHG UDRUN ROO ROS PT PR T0, RO RO PHS0,RW/C1 PHS0,RW/C1 PHS0,RW/C1 PHS0,RW/C1 PHS0,RW/C1 PHS0,RW/C1 Description 0: 16-bit mode 1: 8-bit mode Reserved Link Status Change Transmit Underrun Receive Overflow Counter Overflow Receive Overflow Packet Transmitted Packet Received 6.40 Interrupt Mask Register (FFH) Bit Name Default 7 6 5 4 3 2 1 0 PAR RESERVED LNKCHGI UDRUNI ROOI ROI PTI PRI HPS0,RW RO PHS0,RW PHS0,RW PHS0,RW PHS0,RW PHS0,RW PHS0,RW Description Enable the SRAM read/write pointer to automatically return to the start address when pointer addresses are over the SRAM size. Driver needs to set. When driver sets this bit, REG_F5 will set to 0Ch automatically Reserved Enable Link Status Change Interrupt Enable Transmit Underrun Interrupt Enable Receive Overflow Counter Overflow Interrupt Enable Receive Overflow Interrupt Enable Packet Transmitted Interrupt Enable Packet Received Interrupt Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 24 DM9000A Ethernet Controller with General Processor Interface 7. EEPROM Format name MAC address Word 0 offset Description 0~5 6 Byte Ethernet Address Bit 1:0=01: Update vendor ID and product ID Bit 3:2=01: Accept setting of WORD6 [8:0] Bit 5:4=01: reserved Bit 7:6=01: Accept setting of WORD7 [3:0] (in 8-bit mode) 6-7 Bit 9:8=01: reserved Bit 11:10=01: Accept setting of WORD7 [7] Bit 13:12=01: Accept setting of WORD7 [8] Bit 15:14=01: Accept setting of WORD7 [15:12] 8-9 2 byte vendor ID (Default: 0A46H) 10-11 2 byte product ID (Default: 9000H) When word 3 bit [3:2]=01, these bits can control the CS#, IOR#, IOW# and INT pins polarity. Bit0: CS# pin is active low when set (default active low) Bit1: IOR# pin is active low when set (default: active low) 12-13 Bit2: IOW# pin is active low when set (default: active low) Bit3: INT pin is active low when set (default: active high) Bit4: INT pin is open-collected (default: force output) Bit 15:5: Reserved Bit0: The WAKE pin is active low when set (default: active high) Bit1: The WAKE pin is in pulse mode when set (default: level mode) Bit2: magic wakeup event is enabled when set. (default: disable) Bit3: link_change wakeup event is enabled when set (default disable) Bit6:4: reserved Bit7: LED mode 1 (default: mode 0) 14-15 Bit8: internal PHY is enabled after power-on (default: disable) Bit11:9: reserved Bit13:12: 01 = LED2 act as IOWAIT in 16-bit mode Bit13:12: 10 = LED2 act as WAKE in 16-bit mode Bit14: 1: AUTO-MDIX ON, 0: AUTO-MDIX OFF(default ON) Bit 15: LED1 act as IO16 in 16-bit mode Auto Load Control 3 Vendor ID Product ID 4 5 pin control 6 Wake-up mode control 7 Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 25 DM9000A Ethernet Controller with General Processor Interface 8. PHY Register Description ADD Name 15 00 CONTR Reset OL 0 01 STATUS T4 Cap. 0 02 PHYID1 0 03 PHYID2 1 04 Auto-Neg. Next Advertise Page 05 Link Part. LP Ability Next Page 06 Auto-Neg. Expansio n 16 Specifie BP d 4B5B Config. 17 Specifie 100 FDX d Conf/Stat 18 10T Rsvd Conf/Stat 19 20 PWDOR 14 Loop back 0 TX FDX Cap. 1 0 0 FLP Rcv Ack LP Ack 13 12 11 Speed Auto-N Power select Enable Down 1 1 0 TX HDX 10 FDX 10 HDX Cap. Cap. Cap. 1 1 1 0 0 0 1 1 1 Remote Fault LP RF Reserved Reserved 10 Isolate 0 9 8 Restart Full Auto-N Duplex 0 1 Reserved 0000 0 0 FC Adv LP FC Reserved BP SCR 100 HDX LP Enable BP BP_ADP Reserve ALIGN OK dr 10 FDX HBE Enable TX 0 1 7 Coll. Test 0 6 5 4 3 Reserved 2 1 0 T4 Adv LP T4 1 Model No. 01010 TX FDX TX HDX 10 FDX 10 HDX Adv Adv Adv Adv LP LP LP LP TX FDX TX HDX 10 FDX 10 HDX Pream. Supr. 1 0 Auto-N Compl. 0 0 Remote Fault 0 0 000_0000 Auto-N Link Jabber Cap. Status Detect 1 0 0 0 0 0 Version No. 0000 Advertised Protocol Selector Field Link Partner Protocol Selector Field Extd Cap. 1 1 Pardet Fault LP Next Pg Able Next Pg Able Pream. Supr. New Pg LP AutoN Rcv Cap. Sleep mode Remote LoopOut Reserve Reserve Force Reserve Reserve RPDCTR Reset d d 100LNK d d -EN St. Mch PHY ADDR [4:0] Reserved PD10DRV PD100l PDchip PDcrm PDaeq PDdrv 10 HDX Reserve Reverse Reverse d d d SQUE Enable Reserved Reserved JAB Enable Reserve d Auto-N. Monitor Bit [3:0] Polarity Reverse PDecli PDeclo PD10 Specified TSTSE1 TSTSE2 FORCE_ FORCE_ config TXSD FEF MDIX_C AutoNeg Mdix_fix Mdix_do MonSel1 MonSel0 Reserve PD_valu NTL _llpbk Value wn d e Key to Default In the register description that follows, the default column takes the form: RO = Read only RW = Read/Write Where Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 26 DM9000A Ethernet Controller with General Processor Interface 8.1 Basic Mode Control Register (BMCR) - 00 Bit 0.15 Default Description 0, RW/SC Reset 1=Software reset 0=Normal operation This bit sets the status and controls the PHY registers to their default states. This bit, which is self-clearing, will keep returning a value of one until the reset process is completed Loopback 0, RW Loopback Loop-back control register 1 = Loop-back enabled 0 = Normal operation When in 100Mbps operation mode, setting this bit may cause the descrambler to lose synchronization and produce a 720ms "dead time" before receive Speed selection 1, RW Speed Select 1 = 100Mbps 0 = 10Mbps Link speed may be selected either by this bit or by auto-negotiation. When auto-negotiation is enabled and bit 12 is set, this bit will return auto-negotiation selected medium type Auto-negotiatio 1, RW Auto-negotiation Enable n enable 1 = Auto-negotiation is enabled, bit 8 and 13 will be in auto-negotiation status Power down 0, RW Power Down While in the power-down state, the PHY should respond to management transactions. 1=Power down 0=Normal operation Isolate 0,RW Isolate Force to 0 in application. Restart 0,RW/SC Restart Auto-negotiation Auto-negotiation 1 = Restart auto-negotiation. Re-initiates the auto-negotiation process. When auto-negotiation is disabled (bit 12 of this register cleared), this bit has no function and it should be cleared. This bit is self-clearing and it will keep returning to a value of 1 until auto-negotiation is initiated by the DM9000A. The operation of the auto-negotiation process will not be affected by the management entity that clears this bit 0 = Normal operation Bit Name Reset 0.14 0.13 0.12 0.11 0.10 0.9 Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 27 DM9000A Ethernet Controller with General Processor Interface 0.8 Duplex mode 1,RW Duplex Mode 1 = Full duplex operation. Duplex selection is allowed when Auto-negotiation is disabled (bit 12 of this register is cleared). With auto-negotiation enabled, this bit reflects the duplex capability selected by auto-negotiation 0 = Normal operation Collision Test 1 = Collision test enabled. When set, this bit will cause the collision asserted during the transmit period. 0 = Normal operation Reserved Read as 0, ignore on write 0.7 Collision test 0,RW 0.6-0.0 Reserved 0,RO 8.2 Basic Mode Status Register (BMSR) - 01 Bit 1.15 Bit Name 100BASE-T4 Default 0,RO/P Description 100BASE-T4 Capable 1 = DM9000A is able to perform in 100BASE-T4 mode 0 = DM9000A is not able to perform in 100BASE-T4 mode 100BASE-TX Full Duplex Capable 1 = DM9000A is able to perform 100BASE-TX in full duplex mode 0 = DM9000A is not able to perform 100BASE-TX in full duplex mode 100BASE-TX Half Duplex Capable 1 = DM9000A is able to perform 100BASE-TX in half duplex mode 0 = DM9000A is not able to perform 100BASE-TX in half duplex mode 10BASE-T Full Duplex Capable 1 = DM9000A is able to perform 10BASE-T in full duplex mode 0 = DM9000A is not able to perform 10BASE-TX in full duplex mode 10BASE-T Half Duplex Capable 1 = DM9000A is able to perform 10BASE-T in half duplex mode 0 = DM9000A is not able to perform 10BASE-T in half duplex mode Reserved Read as 0, ignore on write Frame Preamble Suppression 28 1.14 100BASE-TX full-duplex 1,RO/P 1.13 100BASE-TX half-duplex 1,RO/P 1.12 10BASE-T full-duplex 1,RO/P 1.11 10BASE-T half-duplex 1,RO/P 1.10-1.7 1.6 Reserved MF preamble 0,RO 1,RO Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 DM9000A Ethernet Controller with General Processor Interface 1 = PHY will accept management frames with preamble suppressed 0 = PHY will not accept management frames with preamble suppressed Auto-negotiation 0,RO Auto-negotiation Complete Complete 1 = Auto-negotiation process completed 0 = Auto-negotiation process not completed Remote fault 0, RO/LH Remote Fault 1 = Remote fault condition detected (cleared on read or by a chip reset). Fault criteria and detection method is DM9000A implementation specific. This bit will set after the RF bit in the ANLPAR (bit 13, register address 05) is set 0 = No remote fault condition detected Auto-negotiation 1,RO/P Auto Configuration Ability ability 1 = DM9000A is able to perform auto-negotiation 0 = DM9000A is not able to perform auto-negotiation Link status 0,RO/LL Link Status 1 = Valid link is established (for either 10Mbps or 100Mbps operation) 0 = Link is not established The link status bit is implemented with a latching function, so that the occurrence of a link failure condition causes the link status bit to be cleared and remain cleared until it is read via the management interface Jabber detect 0, RO/LH Jabber Detect 1 = Jabber condition detected 0 = No jabber This bit is implemented with a latching function. Jabber conditions will set this bit unless it is cleared by a read to this register through a management interface or a DM9000A reset. This bit works only in 10Mbps mode Extended Capability Extended 1,RO/P 1 = Extended register capable capability 0 = Basic register capable only suppression 1.5 1.4 1.3 1.2 1.1 1.0 8.3 PHY ID Identifier Register #1 (PHYID1) - 02 Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 29 DM9000A Ethernet Controller with General Processor Interface The PHY Identifier Registers #1 and #2 work together in a single identifier of the DM9000A. The Identifier consists of a concatenation of the Organizationally Unique Identifier (OUI), a vendor's model number, and a model revision number. DAVICOM Semiconductor's IEEE assigned OUI is 00606E. Bit 2.15-2.0 Bit Name OUI_MSB Default <0181h> Description OUI Most Significant Bits This register stores bit 3 to 18 of the OUI (00606E) to bit 15 to 0 of this register respectively. The most significant two bits of the OUI are ignored (the IEEE standard refers to these as bit 1 and 2) 8.4 PHY ID Identifier Register #2 (PHYID2) - 03 Bit 3.15-3.1 0 3.9-3.4 Bit Name OUI_LSB VNDR_MDL 3.3-3.0 MDL_REV Default Description <101110>, OUI Least Significant Bits RO/P Bit 19 to 24 of the OUI (00606E) are mapped to bit 15 to 10 of this register respectively <001010>, Vendor Model Number RO/P Five bits of vendor model number mapped to bit 9 to 4 (most significant bit to bit 9) <0000>, Model Revision Number RO/P Five bits of vendor model revision number mapped to bit 3 to 0 (most significant bit to bit 4) Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 30 DM9000A Ethernet Controller with General Processor Interface 8.5 Auto-negotiation Advertisement Register (ANAR) - 04 This register contains the advertised abilities of this DM9000A device as they will be transmitted to its link partner during Auto-negotiation. Bit 4.15 Bit Name NP Default 0,RO/P Description Next page Indication 0 = No next page available 1 = Next page available The DM9000A has no next page, so this bit is permanently set to 0 Acknowledge 1 = Link partner ability data reception acknowledged 0 = Not acknowledged The DM9000A's auto-negotiation state machine will automatically control this bit in the outgoing FLP bursts and set it at the appropriate time during the auto-negotiation process. Software should not attempt to write to this bit. Remote Fault 1 = Local device senses a fault condition 0 = No fault detected Reserved Write as 0, ignore on read Flow Control Support 1 = Controller chip supports flow control ability 0 = Controller chip doesn't support flow control ability 100BASE-T4 Support 1 = 100BASE-T4 is supported by the local device 0 = 100BASE-T4 is not supported The DM9000A does not support 100BASE-T4 so this bit is permanently set to 0 100BASE-TX Full Duplex Support 1 = 100BASE-TX full duplex is supported by the local device 0 = 100BASE-TX full duplex is not supported 100BASE-TX Support 1 = 100BASE-TX half duplex is supported by the local device 0 = 100BASE-TX half duplex is not supported 10BASE-T Full Duplex Support 1 = 10BASE-T full duplex is supported by the local device 0 = 10BASE-T full duplex is not supported 10BASE-T Support 1 = 10BASE-T half duplex is supported by the local device 0 = 10BASE-T half duplex is not supported 31 4.14 ACK 0,RO 4.13 RF 0, RW 4.12-4.1 1 4.10 Reserved FCS X, RW 0, RW 4.9 T4 0, RO/P 4.8 TX_FDX 1, RW 4.7 TX_HDX 1, RW 4.6 10_FDX 1, RW 4.5 10_HDX 1, RW Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 DM9000A Ethernet Controller with General Processor Interface 4.4-4.0 Selector <00001>, RW Protocol Selection Bits These bits contain the binary encoded protocol selector supported by this node <00001> indicates that this device supports IEEE 802.3 CSMA/CD 8.6 Auto-negotiation Link Partner Ability Register (ANLPAR) - 05 This register contains the advertised abilities of the link partner when received during Auto-negotiation. Bit 5.15 Bit Name NP Default 0, RO 5.14 ACK 0, RO 5.13 RF 0, RO 5.12-5.1 1 5.10 Reserved FCS 0, RO 0, RO 5.9 T4 0, RO 5.8 TX_FDX 0, RO 5.7 TX_HDX 0, RO Description Next Page Indication 0 = Link partner, no next page available 1 = Link partner, next page available Acknowledge 1 = Link partner ability data reception acknowledged 0 = Not acknowledged The DM9000A's auto-negotiation state machine will automatically control this bit from the incoming FLP bursts. Software should not attempt to write to this bit Remote Fault 1 = Remote fault indicated by link partner 0 = No remote fault indicated by link partner Reserved Read as 0, ignore on write Flow Control Support 1 = Controller chip supports flow control ability by link partner 0 = Controller chip doesn't support flow control ability by link partner 100BASE-T4 Support 1 = 100BASE-T4 is supported by the link partner 0 = 100BASE-T4 is not supported by the link partner 100BASE-TX Full Duplex Support 1 = 100BASE-TX full duplex is supported by the link partner 0 = 100BASE-TX full duplex is not supported by the link partner 100BASE-TX Support 1 = 100BASE-TX half duplex is supported by the link partner 0 = 100BASE-TX half duplex is not supported by the link partner 32 Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 DM9000A Ethernet Controller with General Processor Interface 5.6 10_FDX 0, RO 10BASE-T Full Duplex Support 1 = 10BASE-T full duplex is supported by the link partner 0 = 10BASE-T full duplex is not supported by the link partner 10BASE-T Support 1 = 10BASE-T half duplex is supported by the link partner 0 = 10BASE-T half duplex is not supported by the link partner Protocol Selection Bits Link partner's binary encoded protocol selector 5.5 10_HDX 0, RO 5.4-5.0 Selector <00000>, RO 8.7 Auto-negotiation Expansion Register (ANER)- 06 Bit 6.15-6.5 6.4 Bit Name Reserved PDF Default 0, RO 0, RO/LH Description Reserved Read as 0, ignore on write Local Device Parallel Detection Fault PDF = 1: A fault detected via parallel detection function. PDF = 0: No fault detected via parallel detection function Link Partner Next Page Able LP_NP_ABLE = 1: Link partner, next page available LP_NP_ABLE = 0: Link partner, no next page Local Device Next Page Able NP_ABLE = 1: DM9000A, next page available NP_ABLE = 0: DM9000A, no next page DM9000A does not support this function, so this bit is always 0 New Page Received A new link code word page received. This bit will be automatically cleared when the register (register 6) is read by management Link Partner Auto-negotiation Able A "1" in this bit indicates that the link partner supports Auto-negotiation 6.3 LP_NP_ABL E NP_ABLE 0, RO 6.2 0,RO/P 6.1 PAGE_RX 0, RO/LH 6.0 LP_AN_ABL E 0, RO 8.8 DAVICOM Specified Configuration Register (DSCR) - 16 Bit 16.15 Bit Name BP_4B5B Default 0,RW 16.14 BP_SCR 0, RW Description Bypass 4B5B Encoding and 5B4B Decoding 1 = 4B5B encoder and 5B4B decoder function bypassed 0 = Normal 4B5B and 5B4B operation Bypass Scrambler/Descrambler Function 1 = Scrambler and descrambler function bypassed 0 = Normal scrambler and descrambler operation 33 Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 DM9000A Ethernet Controller with General Processor Interface 16.13 BP_ALIGN 0, RW Bypass Symbol Alignment Function 1 = Receive functions (descrambler, symbol alignment and symbol decoding functions) bypassed. Transmit functions (symbol encoder and scrambler) bypassed 0 = Normal operation BYPASS ADPOK Force signal detector (SD) active. This register is for debug only, not release to customer 1=Forced SD is OK, 0=Normal operation Reserved Force to 0 in application. 100BASE-TX Mode Control 1 = 100BASE-TX operation Reserved Reserved Force to 0 in application. Force Good Link in 100Mbps 0 = Normal 100Mbps operation 1 = Force 100Mbps good link status This bit is useful for diagnostic purposes Reserved Force to 0 in application. Reserved Force to 0 in application. Reduced Power Down Control Enable This bit is used to enable automatic reduced power down 0 = Disable automatic reduced power down 16.3 SMRST 0, RW 1 = Enable automatic reduced power down Reset State Machine When writes 1 to this bit, all state machines of PHY will be 16.2 MFPSC 1, RW reset. This bit is self-clear after reset is completed MF Preamble Suppression Control Frame preamble suppression control bit 1 = MF preamble suppression bit on 0 = MF preamble suppression bit off Sleep Mode Writing a 1 to this bit will cause PHY entering the Sleep mode and power down all circuit except oscillator and clock Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 34 16.12 BP_ADPOK 0, RW 16.11 16.10 16.9 16.8 16.7 Reserved TX Reserved Reserved F_LINK_100 0, RW 1, RW 0, RO 0, RW 0, RW 16.6 16.5 16.4 SPLED_CTL COLLED_CT L RPDCTR-EN 0, RW 0, RW 1, RW 16.1 SLEEP 0, RW DM9000A Ethernet Controller with General Processor Interface generator circuit. When waking up from Sleep mode (write this bit to 0), the configuration will go back to the state 16.0 RLOUT 0, RW before sleep; but the state machine will be reset Remote Loopout Control When this bit is set to 1, the received data will loop out to the transmit channel. This is useful for bit error rate testing 8.9 DAVICOM Specified Configuration and Status Register (DSCSR) - 17 Description 100M Full Duplex Operation Mode After auto-negotiation is completed, results will be written to this bit. If this bit is 1, it means the operation 1 mode is a 100M full duplex mode. The software can read bit [15:12] to see which mode is selected after auto-negotiation. This bit is invalid when it is not in the auto-negotiation mode 17.14 100HDX 1, RO 100M Half Duplex Operation Mode After auto-negotiation is completed, results will be written to this bit. If this bit is 1, it means the operation 1 mode is a 100M half duplex mode. The software can read bit [15:12] to see which mode is selected after auto-negotiation. This bit is invalid when it is not in the auto-negotiation mode 17.13 10FDX 1, RO 10M Full Duplex Operation Mode After auto-negotiation is completed, results will be written to this bit. If this bit is 1, it means the operation 1 mode is a 10M Full Duplex mode. The software can read bit [15:12] to see which mode is selected after auto-negotiation. This bit is invalid when it is not in the auto-negotiation mode 17.12 10HDX 1, RO 10M Half Duplex Operation Mode After auto-negotiation is completed, results will be written to this bit. If this bit is 1, it means the operation 1 mode is a 10M half duplex mode. The software can read bit [15:12] to see which mode is selected after auto-negotiation. This bit is invalid when it is not in the auto-negotiation mode 17.11-17 Reserved 0, RO Reserved .9 Read as 0, ignore on write 17.8-17. PHYADR (PHYADR), PHY Address Bit 4:0 4 [4:0] RW The first PHY address bit transmitted or received is the MSB of the address (bit 4). A station management entity connected to multiple PHY entities must know the appropriate address of each PHY 17.3-17. ANMB[3: 0, RO Auto-negotiation Monitor Bits 0 0] These bits are for debug only. The auto-negotiation status will be Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 35 Bit 17.15 Bit Name 100FDX Default 1, RO DM9000A Ethernet Controller with General Processor Interface written to these bits. B3 0 0 0 0 0 0 0 0 b2 0 0 0 0 1 1 1 1 b1 0 0 1 1 0 0 1 1 B0 0 1 0 1 0 1 0 1 In IDLE state Ability match Acknowledge match Acknowledge match fail Consistency match Consistency match fail Parallel detects signal_link_ready Parallel detects signal_link_ready fail 8.10 10BASE-T Configuration/Status (10BTCSR) - 18 Bit 18.15 18.14 Bit Name Reserved LP_EN Default 0, RO 1, RW Description Reserved Read as 0, ignore on write Link Pulse Enable 1 = Transmission of link pulses enabled 0 = Link pulses disabled, good link condition forced This bit is valid only in 10Mbps operation Heartbeat Enable 1 = Heartbeat function enabled 0 = Heartbeat function disabled When the DM9000A is configured for full duplex operation, this bit will be ignored (the collision/heartbeat function is invalid in full duplex mode) Squelch Enable 1 = Normal squelch 0 = Low squelch Jabber Enable Enables or disables the Jabber function when the DM9000A is in 10BASE-T full duplex or 10BASE-T transceiver Loopback mode 1 = Jabber function enabled 0 = Jabber function disabled Reserved Force to 0, in application. Reserved Read as 0, ignore on write Polarity Reversed 36 18.13 HBE 1,RW 18.12 SQUELCH 1, RW 18.11 JABEN 1, RW 18.10 18.9-18. 1 18.0 Reserved Reserved POLR 0, RW 0, RO 0, RO Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 DM9000A Ethernet Controller with General Processor Interface When this bit is set to 1, it indicates that the 10Mbps cable polarity is reversed. This bit is automatically set and cleared by 10BASE-T module 8.11 Power Down Control Register (PWDOR) - 19 Bit Bit Name Default Description 19.15-19. Reserved 0, RO Reserved 9 Read as 0, ignore on write 19.8 PD10DRV 0, RW Vendor power down control test 19.7 PD100DL 0, RW Vendor power down control test 19.6 PDchip 0, RW Vendor power down control test 19.5 PDcom 0, RW Vendor power down control test 19.4 PDaeq 0, RW Vendor power down control test 19.3 PDdrv 0, RW Vendor power down control test 19.2 PDedi 0, RW Vendor power down control test 19.1 PDedo 0, RW Vendor power down control test 19.0 PD10 0, RW Vendor power down control test * when selected, the power down value is control by Register 20.0 8.12 (Specified config) Register - 20 Description Vendor test select control Vendor test select control FORCE_TXSD Force Signal Detect 1: force SD signal OK in 100M 0: normal SD signal. 20.12 FORCE_FEF 0,RW Vendor test select control 20.11-20 Reserved 0, RO Reserved .8 Read as 0, ignore on write 20.7 MDIX_CNTL MDI/MDIX, The polarity of MDI/MDIX value RO 1: MDIX mode 0: MDI mode AutoNeg_lpbk 20.6 0,RW Auto-negotiation Loopback 1: test internal digital auto-negotiation Loopback 0: normal. 20.5 Mdix_fix 0, RW MDIX_CNTL force value: Value When Mdix_down = 1, MDIX_CNTL value depend on the register value. 20.4 Mdix_down 0,RW AUTO-MDIX Down Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 37 Bit 20.15 20.14 20.13 Bit Name TSTSE1 TSTSE2 Default 0,RW 0,RW 0,RW DM9000A Ethernet Controller with General Processor Interface Manual force MDI/MDIX. 0: Enable AUTO-MDIX 1: Disable AUTO-MDIX , MDIX_CNTL value depend on 20.5 Vendor monitor select Vendor monitor select Reserved Force to 0, in application. Power down control value Decision the value of each field Register 19. 1: power down 0: normal 20.3 20.2 20.1 20.0 MonSel1 MonSel0 Reserved PD_value 0,RW 0,RW 0,RW 0,RW Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 38 DM9000A Ethernet Controller with General Processor Interface 9. Functional Description 9.1 Host Interface The host interface is a general processor local bus that using chip select (pin CS#) to access DM9000A. Pin CS# is default low active which can be re-defined by EEPROM setting. There are only two addressing ports through the access of the host interface. One port is the INDEX port and the other is the DATA port. The INDEX port is decoded by the pin CMD =0 and the DATA port by the pin CMD =1. The contents of the INDEX port are the register address of the DATA port. Before the access of any register, the address of the register must be saved in the INDEX port. IMR is set, the memory address increment will wrap to location 0x0C00 if the end of address (i.e. 16K) is reached. 9.3 Packet Transmission There are two packets, sequentially named as index I and index II, can be stored in the TX SRAM at the same time. The index register 02h controls the insertion of CRC and pads. Their statuses are recorded at index registers 03h and 04h respectively. The start address of transmission is 00h and the current packet is index I after software or hardware reset. Firstly write data to the TX SRAM using the DMA port and then write the byte count to byte_ count register at index register 0fch and 0fdh. Set the bit 1 of control register. The DM9000A starts to transmit the index I packet. Before the transmission of the index I packet ends, the data of the next (index II) packet can be moved to TX SRAM. After the index I packet ends the transmission, write the byte count data of the index II to BYTE_COUNT register and then set the bit 1 of control register to transmit the index II packet. The following packets, named index I, II, I, II,..., use the same way to be transmitted. 9.4 Packet Reception The RX SRAM is a ring data structure. The start address of RX SRAM is 0C00h after software or hardware reset. Each packet has a 4-byte header followed with the data of the reception packet which CRC field is included. The format of the 4-byte header is 01h, status, BYTE_COUNT low, and BYTE_COUNT high. It is noted that the start address of each packet is in the proper address boundary which depends on the operation mode (the 8-bit or 16-bit ). 9.2 Direct Memory Access Control The DM9000A provides DMA capability to simplify the access of the internal memory. After the programming of the starting address of the internal memory and then issuing a dummy read/write command to load the current data to internal data buffer, the desired location of the internal memory can be accessed by the read/write command registers. The memory's address will be increased with the size that equals to the current operation mode (i.e. the 8-bit or 16-bit mode) and the data of the next location will be loaded into internal data buffer automatically. It is noted that the data of the first access (the dummy read/write command) in a sequential burst should be ignored because that the data was the contents of the last read/write command. The internal memory size is 16K bytes. The first location of 3K bytes is used for the data buffer of the packet transmission. The other 13K bytes are used for the buffer of the receiving packets. So in the write memory operation, when the bit 7 of IMR is set, the memory address increment will wrap to location 0 if the end of address (i.e. 3K) is reached. In a similar way, in the read memory operation, when the bit 7 of Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 39 DM9000A Ethernet Controller with General Processor Interface 9.5 100Base-TX Operation The transmitter section contains the following functional blocks: - 4B5B Encoder - Scrambler - Parallel to Serial Converter - NRZ to NRZI Converter - NRZI to MLT-3 - MLT-3 Driver 9.5.1 4B5B Encoder The 4B5B encoder converts 4-bit (4B) nibble data generated by the MAC Reconciliation Layer into a 5-bit (5B) code group for transmission, see reference Table 1. This conversion is required for control and packet data to be combined in code groups. The 4B5B encoder substitutes the first 8 bits of the MAC preamble with a J/K code-group pair (11000 10001) upon transmit. The 4B5B encoder continues to replace subsequent 4B preamble and data nibbles with corresponding 5B code-groups. At the end of the transmit packet, upon the deassertion of the Transmit Enable signal from the MAC Reconciliation layer, the 4B5B encoder injects the T/R code-group pair (01101 00111) indicating the end of frame. After the T/R code-group pair, the 4B5B encoder continuously injects IDLEs into the transmit data stream until Transmit Enable is asserted and the next transmit packet is detected. The DM9000A includes a Bypass 4B5B conversion option within the 100Base-TX Transmitter for support of applications like 100 Mbps repeaters which do not require 4B5B conversion. 9.5.2 Scrambler The scrambler is required to control the radiated emissions (EMI) by spreading the transmit energy across the frequency spectrum at the media connector and on the twisted pair cable in 100Base-TX operation. By scrambling the data, the total energy presented to the cable is randomly distributed over a wide frequency range. Without the scrambler, energy levels on the cable could peak beyond FCC limitations at frequencies related to the repeated 5B sequences, like the continuous transmission of IDLE symbols. The scrambler output is combined with the NRZ 5B data from the code-group encoder via an XOR logic function. The result is a scrambled data stream with sufficient randomization to decrease radiated emissions at critical frequencies. 9.5.3 Parallel to Serial Converter The Parallel to Serial Converter receives parallel 5B scrambled data from the scrambler, and serializes it (converts it from a parallel to a serial data stream). The serialized data stream is then presented to the NRZ to NRZI encoder block 9.5.4 NRZ to NRZI Encoder After the transmit data stream has been scrambled and serialized, the data must be NRZI encoded for compatibility with the TP-PMD standard, for 100Base -TX transmission over Category-5 unshielded twisted pair cable. 9.5.5 MLT-3 Converter The MLT-3 conversion is accomplished by converting the data stream output, from the NRZI encoder into two binary data streams, with alternately phased logic one event. 9.5.6 MLT-3 Driver The two binary data streams created at the MLT-3 converter are fed to the twisted pair output driver, which converts these streams to current sources and alternately drives either side of the transmit transformer's primary winding, resulting in a minimal current MLT-3 signal. Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 40 DM9000A Ethernet Controller with General Processor Interface 9.5.7 4B5B Code Group Symbol 0 1 2 3 4 5 6 7 8 9 A B C D E F I J K T R H V V V V V V V V V V Meaning Data 0 Data 1 Data 2 Data 3 Data 4 Data 5 Data 6 Data 7 Data 8 Data 9 Data A Data B Data C Data D Data E Data F Idle SFD (1) SFD (2) ESD (1) ESD (2) Error Invalid Invalid Invalid Invalid Invalid Invalid Invalid Invalid Invalid Invalid 4B code 3210 0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111 undefined 0101 0101 undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined Table 1 5B Code 43210 11110 01001 10100 10101 01010 01011 01110 01111 10010 10011 10110 10111 11010 11011 11100 11101 11111 11000 10001 01101 00111 00100 00000 00001 00010 00011 00101 00110 01000 01100 10000 11001 Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 41 DM9000A Ethernet Controller with General Processor Interface 9.6 100Base-TX Receiver The 100Base-TX receiver contains several function blocks that convert the scrambled 125Mb/s serial data to synchronous 4-bit nibble data. The receive section contains the following functional blocks: - Signal Detect - Digital Adaptive Equalization - MLT-3 to Binary Decoder - Clock Recovery Module - NRZI to NRZ Decoder - Serial to Parallel - Descrambler - Code Group Alignment - 4B5B Decoder 9.6.1 Signal Detect The signal detect function meets the specifications mandated by the ANSI XT12 TP-PMD 100Base-TX standards for both voltage thresholds and timing parameters. 9.6.2 Adaptive Equalization When transmitting data over copper twisted pair cable at high speed, attenuation based on frequency becomes a concern. In high speed twisted pair signaling, the frequency content of the transmitted signal can vary greatly during normal operation based on the randomness of the scrambled data stream. This variation in signal attenuation, caused by frequency variations, must be compensated for to ensure the integrity of the received data. In order to ensure quality transmission when employing MLT-3 encoding, the compensation must be able to adapt to various cable lengths and cable types depending on the installed environment. The selection of long cable lengths for a given implementation requires significant compensation, which will be over-killed in a situation that includes shorter, less attenuating cable lengths. Conversely, the selection of short or intermediate cable lengths requiring less compensation will cause serious under-compensation for longer length cables. Therefore, the compensation or equalization must be adaptive to ensure proper conditioning of the received signal independent of the 9.6.3 MLT-3 to NRZI Decoder The DM9000A decodes the MLT-3 information from the Digital Adaptive Equalizer into NRZI data. 9.6.4 Clock Recovery Module The Clock Recovery Module accepts NRZI data from the MLT-3 to NRZI decoder. The Clock Recovery Module locks onto the data stream and extracts the 125Mhz reference clock. The extracted and synchronized clock and data are presented to the NRZI to NRZ decoder. 9.6.5 NRZI to NRZ The transmit data stream is required to be NRZI encoded for compatibility with the TP-PMD standard for 100Base-TX transmission over Category-5 unshielded twisted pair cable. This conversion process must be reversed on the receive end. The NRZI to NRZ decoder, receives the NRZI data stream from the Clock Recovery Module and converts it to a NRZ data stream to be presented to the Serial to Parallel conversion block. 9.6.6 Serial to Parallel The Serial to Parallel Converter receives a serial data stream from the NRZI to NRZ converter. It converts the data stream to parallel data to be presented to the descrambler. 9.6.7 Descrambler Because of the scrambling process requires to control the radiated emissions of transmit data streams, the receiver must descramble the receive data streams. The descrambler receives scrambled parallel data streams from the Serial to Parallel converter, and it descrambles the data streams, and presents the data streams to the Code Group alignment block. cable length. Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 42 DM9000A Ethernet Controller with General Processor Interface 9.6.8 Code Group Alignment The Code Group Alignment block receives un-aligned 5B data from the descrambler and converts it into 5B code group data. Code Group Alignment occurs after the J/K is detected, and subsequent data is aligned on a fixed boundary. 9.6.9 4B5B Decoder The 4B5B Decoder functions as a look-up table that translates incoming 5B code groups into 4B (Nibble) data. When receiving a frame, the first 2 5-bit code groups receive the start-of-frame delimiter (J/K symbols). The J/K symbol pair is stripped and two nibbles of preamble pattern are substituted. The last two code groups are the end-of-frame delimiter (T/R Symbols). The T/R symbol pair is also stripped from the nibble, presented to the Reconciliation layer. 9.7 10Base-T Operation The 10Base-T transceiver is IEEE 802.3u compliant. When the DM9000A is operating in 10Base-T mode, the coding scheme is Manchester. Data processed for transmit is presented in nibble format, converted to a serial bit stream, then the Manchester encoded. When receiving, the bit stream, encoded by the Manchester, is decoded and converted into nibble format. 9.8 Collision Detection For half-duplex operation, a collision is detected when the transmit and receive channels are active simultaneously. Collision detection is disabled in full duplex operation. 9.9 Carrier Sense Carrier Sense (CRS) is asserted in half-duplex operation during transmission or reception of data. During full-duplex mode, CRS is asserted only during receive operations. 9.10 Auto-Negotiation The objective of Auto-negotiation is to provide a means to exchange information between linked devices and to automatically configure both devices to take maximum advantage of their abilities. It is important to note that Auto-negotiation does not test the characteristics of the linked segment. The Auto-Negotiation function provides a means for a device to advertise supported modes of operation to a remote link partner, acknowledge the receipt and understanding of common modes of operation, and to reject un-shared modes of operation. This allows devices on both ends of a segment to establish a link at the best common mode of operation. If more than one common mode exists between the two devices, a mechanism is provided to allow the devices to resolve to a single mode of operation using a predetermined priority resolution function. Auto-negotiation also provides a parallel detection function for devices that do not support the Auto-negotiation feature. During Parallel detection there is no exchange of information of configuration. Instead, the receive signal is examined. If it is discovered that the signal matches a technology, which the receiving device supports, a connection will be automatically established using that technology. This allows devices not to support Auto-negotiation but support a common mode of operation to establish a link. Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 43 DM9000A Ethernet Controller with General Processor Interface 9.11 Power Reduced Mode The Signal detect circuit is always turned to monitor whether there is any signal on the media (cable disconnected). The DM9000A automatically turns off the power and enters the Power Reduced mode, whether its operation mode is N-way or force mode. When enters the Power Reduced mode, the transmit circuit still sends out fast link pules with minimum power consumption. If a valid signal is detected from the media, which might be N-ways fast link pules, 10Base-T normal link pules, or 100Base-TX MLT3 signals, the device will wake up and resume a normal operation mode. That can be writing Zero to PHY Reg. 16.4 to disable Power Reduced mode. 9.11.1 Power Down Mode The PHY Reg.0.11 can be set high to enter the Power Down mode, which disables all transmit and receive functions, except the access of PHY registers. 9.11.2 Reduced Transmit Power Mode The additional Transmit power reduction can be gained by designing with 1.25:1 turns ration magnetic on its TX side and using a 8.5K resistor on BGRES and AGND pins, and the TXO+/TXO- pulled high resistors should be changed from 50 to 78 . This configuration could be reduced about 20% transmit power. Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 44 DM9000A Ethernet Controller with General Processor Interface 10. DC and AC Electrical Characteristics 10.1 Absolute Maximum Ratings ( 25C ) Symbol Parameter DVDD Supply Voltage VIN DC Input Voltage (VIN) VOUT DC Output Voltage(VOUT) Tstg Storage Temperature range TC Case Temperature TA Ambient Temperature LT Lead Temperature (TL,soldering,10 sec.). 10.1.1 Operating Conditions Symbol Parameter DVDD Supply Voltage Tc Case Reserve PD 100BASE-TX (Power Dissipation) 10BASE-T TX (100% utilization) 10BASE-T idle Auto-negotiation Power Reduced Mode(without cable) Power Down Mode 10.2 DC Electrical Characteristics (VDD = 3.3V) Symbol Parameter Min. Inputs VIL Input Low Voltage VIH Input High Voltage 2.0 IIL Input Low Leakage Current -1 IIH Input High Leakage Current Outputs VOL Output Low Voltage VOH Output High Voltage 2.4 Receiver VICM RX+/RX- Common Mode Input Voltage Transmitter VTD100 100TX+/- Differential Output 1.9 Voltage VTD10 10TX+/- Differential Output Voltage 4.4 ITD100 100TX+/- Differential Output 19 Current ITD10 10TX+/- Differential Output Current 44 Min. -0.3 -0.5 -0.3 -65 0 0 Max. 3.6 5.5 3.6 +150 +85 +70 +235 Unit V V V Conditions asT Min. 3.135 --------------- Max. 3.465 85 87 92 38 56 31 21 Unit V C mA mA mA mA mA mA Conditions 3.3V 3.3V 3.3V 3.3V 3.3V 3.3V Typ. 2.5 Max. 0.8 1 0.4 - Unit V V uA uA V V V Conditions VIN = 0.0V VIN = 3.3V IOL = 4mA IOH = -4mA 100 Termination Across Peak to Peak Peak to Peak Absolute Value Absolute Value 2.0 5 20 50 2.1 5.6 21 56 V V mA mA Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 45 DM9000A Ethernet Controller with General Processor Interface 10.3 AC Electrical Characteristics & Timing Waveforms 10.3.1 TP Interface Symbol Parameter tTR/F 100TX+/- Differential Rise/Fall Time tTM 100TX+/- Differential Rise/Fall Time Mismatch tTDC 100TX+/- Differential Output Duty Cycle Distortion Tt/T 100TX+/- Differential Output Peak-to-Peak Jitter XOST 100TX+/- Differential Voltage Overshoot 10.3.2 Oscillator/Crystal Timing Symbol Parameter TCKC OSC Clock Cycle TPWH OSC Pulse Width High TPWL OSC Pulse Width Low 10.3.3 Processor I/O Read Timing Min. 3.0 0 0 0 0 Typ. - Max. 5.0 0.5 0.5 1.4 5 Unit ns ns ns ns % Conditions Min. 39.998 16 16 Typ. 40 20 20 Max. 40.002 24 24 Unit ns ns ns Conditions 50ppm CM S#,C D IO # R T1 T5 T2 T6 T4 SD T3 IO 16 T7 T8 Parameter CS#,CMD valid to IOR# valid IOR# width System Data(SD) Delay time IOR# invalid to System Data(SD) invalid IOR# invalid to CS#,CMD invalid IOR# invalid to next IOR#/IOW# valid When read DM9000A register T6 IOR# invalid to next IOR#/IOW# valid When read DM9000A memory with F0h register T2+T6 IOR# invalid to next IOR#/IOW# valid When read DM9000A memory with F2h register T7 CS#,CMD valid to IO16 valid T8 CS#,CMD invalid to IO16 invalid *Note (the default clk period is 20ns) 1. The IO16 is valid when the SD bus width is 16-bit and the system address is DATA port (i.e. CMD is Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 Symbol T1 T2 T3 T4 T5 T6 Min. 0 10 Typ. Max. 3 3 0 2 4 1 3 3 Unit ns ns ns ns ns clk* clk* clk* ns ns high) and the value of INDEX port is memory data register index. ex. F0H, F2H, F6H or F8H 46 DM9000A Ethernet Controller with General Processor Interface 10.3.4 Processor I/O Write Timing CS# , CMD IOW# SD IO16 T1 T5 T6 T2 T4 T3 T8 T7 Symbol T1 T2 T3 T4 T5 T6 T6 T2+T6 T7 T8 Parameter CS#,CMD valid to IOW# valid IOW# Width System Data(SD) Setup Time System Data(SD) Hold Time IOW# Invalid to CS#,CMD Invalid IOW# Invalid to next IOW#/IOR# valid When write DM9000A INDEX port IOW# Invalid to next IOW#/IOR# valid When write DM9000A DATA port IOW# Invalid to next IOW#/IOR# valid When write DM9000A memory CS#,CMD Valid to IO16 valid CS#,CMD Invalid to IO16 Invalid Min. 0 10 10 3 0 1 2 1 Typ. Max. Unit ns ns ns ns ns clk* clk* clk* 3 3 ns ns Note (the default clk period is 20ns) 1. The IO16 is valid when the SD bus width is 16-bit and system address is DATA port (i.e. CMD is high) and the value of INDEX port is memory data register index (ex. F0H, F2H, F6H or F8H Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 47 DM9000A Ethernet Controller with General Processor Interface 10.3.5 EEPROM Interface Timing Symbol T1 T2 T3 T4 T5 T6 T7 Parameter EECK Frequency EECS Setup Time EECS Hold Time EEDIO Setup Time when output EEDIO Hold Time when output EEDIO Setup Time when input EEDIO Hold Time when input Min. Typ. 0.375 500 2166 480 2200 Max. 8 8 Unit Mhz ns ns ns ns ns ns Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 48 DM9000A Ethernet Controller with General Processor Interface 11. Application Notes 11.1 Network Interface Signal Routing Place the transformer as close as possible to the RJ-45 connector. Place all the 50 resistors as close as possible to the DM9000A RXI and TXO pins. Traces routed from RXI and TXO to the transformer should run in close pairs directly to the transformer. The designer should be careful not to cross the transmit and receive pairs. As always, vias should be avoided as much as possible. The network interface should be void of any signals other than the TXO and RXI pairs between the RJ-45 to the transformer and the transformer to the DM9000A.. There should be no power or ground planes in the area under the 11.2 10Base-T/100Base-TX Auto MDIX Application 50 1% RXI+ 3 50 1% 0.1F network side of the transformer to include the area under the RJ-45 connector. (Refer to Figure 11-4 and 11-5) Keep chassis ground away from all active signals. The RJ-45 connector and any unused pins should be tied to chassis ground through a resistor divider network and a 2KV bypass capacitor. The Band Gap resistor should be placed as physically close as pins 1 and 48 as possible (refer to Figure 11-1 and 11-2). The designer should not run any high-speed signal near the Band Gap resistor placement. AUTO MDI-X Transformer 1:1 1 2 3 RJ45 RXIAVDD_25 AVDD_25 4 2.5V AVCC 220F 0.1F 2 9 4 5 DM9000A TX0+ TX0- 7 50 1% 8 AGND AGND 1:1 6 7 8 50 1% BGRES BGGND 1 48 6.8K AGND 0.1F 75 1% 75 1% 75 1% 1% 0.1F/2KV Chasis GND Figure 11-1 Auto MDIX Application Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 49 DM9000A Ethernet Controller with General Processor Interface 11.3 10Base-T/100Base-TX ( Non Auto MDIX Transformer Application ) 50 1% RXI+ 3 50 1% 0.1F Transformer 1:1 1 2 3 RJ45 RXIAVDD_25 AVDD_25 4 2.5V AVCC 220F 0.1F 2 9 4 5 DM9000A TX0+ TX0- 7 AGND AGND 50 1% 1:1 6 7 8 8 50 1% BGRES BGGND 1 48 6.8K AGND 0.1F 75 1% 75 1% 75 1% 1% 0.1F/2KV Chasis GND Figure 11-2 Non Auto MDIX Transformer Application Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 50 DM9000A Ethernet Controller with General Processor Interface 11.4 Power Decoupling Capacitors Davicom Semiconductor recommends placing all the decoupling capacitors for all power supply pins as close as possible to the power pads of the DM9000A (The best placed distance is < 3mm from pin). The recommended decoupling capacitor is 0.1 F or 0.01 F, as required by the design layout. Figure 3 Figure 11-3 Power Decoupling Capacitors Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 51 DM9000A Ethernet Controller with General Processor Interface 11.5 Ground Plane Layout Davicom Semiconductor recommends a single ground plane approach to minimize EMI. Ground plane partitioning can cause increased EMI emissions that could make the network interface card not comply with specific FCC regulations (part 15). Figure 11-4 shows a recommended ground layout scheme. Figure 4 Figure 11-4 Ground Plane Layout Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 52 DM9000A Ethernet Controller with General Processor Interface 11.6 Power Plane Partitioning The power planes should be approximately illustrated in Figure 11-5. Figure 11-5 Power Plane Partitioning Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 53 DM9000A Ethernet Controller with General Processor Interface 11.7 Magnetics Selection Guide Refer to Table 2 for transformer requirements. Transformers, meeting these requirements, are available from a variety of magnetic manufacturers. Designers should test and qualify all magnetics Manufacturer Pulse Engineering Delta YCL Halo Nano Pulse Inc. Fil-Mag Bel Fuse Valor Macronics Bothhand before using them in an application. The transformers listed in Table 2 are electrical equivalents, but may not be pin-to-pin equivalents. Part Number PE-68515, H1078, H1012, H1102 LF8200, LF8221x 20PMT04, 20PMT05, PH163112 , YCL 0303 PH163539 *(Auto MDIX) TG22-3506ND, TD22-3506G1, TG22-S010ND, TG22-S012ND TG110-S050N2 NPI 6181-37, NPI 6120-30, NPI 6120-37 NPI 6170-30 PT41715 S558-5999-01, S558-5999-W2 ST6114, ST6118 HS2123, HS2213 TS6121C,16ST8515,16ST1086 Table 2 11.8 Crystal Selection Guide A crystal can be used to generate the 25MHz reference clock instead of an oscillator. The crystal must be a fundamental type, and series-resonant. Connects to pins X1 and X2, and shunts each crystal lead to ground with a 22pf capacitor (see figure 11-6). X2 43 44 X1 25MHz 22pf AGND 22pf AGND Figure 11-6 Crystal Circuit Diagram Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 54 DM9000A Ethernet Controller with General Processor Interface 12. Package Information LQFP 48L (F.P. 2mm) Outline Dimensions unit: inches/mm Symbol Dimensions in inches Min. Nom. 0.055 0.009 0.008 0.354BSC 0.276BSC 0.354BSC 0.276BSC 0.020BSC Max. 0.063 0.006 0.057 0.011 0.009 0.008 0.006 Dimensions in mm Min. 0.05 1.35 0.17 0.17 0.09 0.09 Nom. 1.40 0.22 0.20 9.00BSC 7.00BSC 9.00BSC 7.00BSC 0.50BSC Max. 1.60 0.15 1.45 0.27 0.23 0.20 0.16 L1 y 0.039REF 0.003MAX 1.00REF 0.08MAX A A1 A2 b b1 C C1 D D1 E E1 0.002 0.053 0.007 0.007 0.004 0.004 Notes: 1. To be determined at seating plane. 2. Dimensions D1 and E 1do not include mold protrusion. D1 and E1 are maximum plastic body size dimensions including mold mismatch. 3. Dimensions b does not include dambar protrusion. Total in excess of the b dimension at maximum material condition. Dambar cannot be located on the lower radius of the foot. 4. Exact shape of each corner is optional. 5. These dimensions apply to the flat section of the lead between 0.10mm and 0.25mm from the lead tip. 6. A1 is defined as the distance from the seating plane to the lowest point of the package body. 7. Controlling dimension: millimeter. 8. Reference documents: JEDEC MS-026, BBC. L 0.018 0.024 0-12 0.030 0.45 0.60 0-12 0.75 Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 55 DM9000A Ethernet Controller with General Processor Interface 13. Ordering Information Part Number DM9000AE DM9000AEP Pin Count 48 48 Package LQFP LQFP (Pb-Free) application circuits illustrated in this document are for reference purposes only. DAVICOM's terms and conditions printed on the order acknowledgment govern all sales by DAVICOM. DAVICOM will not be bound by any terms inconsistent with these unless DAVICOM agrees otherwise in writing. Acceptance of the buyer's orders shall be based on these terms. Disclaimer The information appearing in this publication is believed to be accurate. Integrated circuits sold by DAVICOM Semiconductor are covered by the warranty and patent indemnification provisions stipulated in the terms of sale only. DAVICOM makes no warranty, express, statutory, implied or by description regarding the information in this publication or regarding the information in this publication or regarding the freedom of the described chip(s) from patent infringement. FURTHER, DAVICOM MAKES NO WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PURPOSE. DAVICOM reserves the right to halt production or alter the specifications and prices at any time without notice. Accordingly, the reader is cautioned to verify that the data sheets and other information in this publication are current before placing orders. Products described herein are intended for use in normal commercial applications. Applications involving unusual environmental or reliability requirements, e.g. military equipment or medical life support equipment, are specifically not recommended without additional processing by DAVICOM for such applications. Please note that Company Overview DAVICOM Semiconductor Inc. develops and manufactures integrated circuits for integration into data communication products. Our mission is to design and produce IC products that are the industry's best value for Data, Audio, Video, and Internet/Intranet applications. To achieve this goal, we have built an organization that is able to develop chipsets in response to the evolving technology requirements of our customers while still delivering products that meet their cost requirements. Products We offer only products that satisfy high performance requirements and which are compatible with major hardware and software standards. Our currently available and soon to be released products are based on our proprietary designs and deliver high quality, high performance chipsets that comply with modem communication standards and Ethernet networking standards. Contact Windows For additional information about DAVICOM products, contact the sales department at: Headquarters Hsin-chu Office: No.6 Li-Hsin Rd. VI, Science-based Industrial Park, Hsin-chu City, Taiwan, R.O.C. TEL: 886-3-5798797 FAX: 886-3-5646929 WARNING Conditions beyond those listed for the absolute maximum may destroy or damage the products. In addition, conditions for sustained periods at near the limits of the operating ranges will stress and may temporarily (and permanently) affect and damage structure, performance and/or function. Preliminary datasheet Version: DM9000A-DS-P03 Apr. 21, 2005 56 |
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