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Preliminary Data Sheet August 2000
TTRN012G5 (2.5 Gbits/s) and TTRN012G7 (2.5 Gbits/s and 2.7 Gbits/s) Clock Synthesizer, 16:1 Data Multiplexer
Features
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Description
The Lucent Technologies Microelectronics Group TTRN012G5 operates at the OC-48/STM-16 data rate of 2.5 Gbits/s. The TTRN012G7 device operates at either 2.5 Gbits/s or the RS FEC OC-48/STM-16 data rate of 2.7 Gbits/s. For clarity, this data sheet refers to the TTRN012G5 serial data rate as 2.5 Gbits/s and the parallel data and reference clock frequency as 155 MHz. (The precise rates are 2.48832 Gbits/s and 155.52 MHz.) When using the TTRN012G7 at the FEC rate, the 2.5 Gbits/s data rate should be interpreted as 2.7 Gbits/s and the parallel and clock frequency should be interpreted as 166 MHz. (The precise rates are 2.66606 Gbits/s and 166.62 MHz.) The devices provide a 16:1 multiplexer and clock multiplier unit. Both a high-speed serial clock and data output are generated. The devices accept 16 differential PECL data inputs and a low-speed reference clock. A unique feature of the multiplexer is that no clock is required to feed in the 16 data lines, as long as the upstream data chip clock is synchronous with the device REFCLKP/N input. Alternatively, contra-clocking may be used, whereby the device provides one of four phases of a 155.52 MHz or 166.62 MHz clock output back upstream to the data chip. Other features include a parity bit input and parity check on the 16 input data lines, a second 2.5 Gbits/s or 2.7 Gbits/s data output for loopback toward the TRCV012G5 or TRCV012G7 device, and a user-configurable PLL bandwidth. Both devices are available in either BiCMOS or in SiGe BiCMOS technology for lower power operation.
TTRN012G5 supports OC-48/STM-16 data rate TTRN012G7 supports: -- OC-48/STM-16 data rate -- RS (255, 239) forward error correction (FEC) OC-48/STM-16 data rate Fully integrated clock synthesizer and 16:1 data multiplexer Supports clockless data transfer into the 16:1 multiplexer Parity checking and valid data indication Data inversion option Additional high-speed CML serial data output for system loopback Loss of lock indication Single 3.3 V supply Available in either MBIC 025 BiCMOS technology or lower-power MBIC 025 silicon germanium BiCMOS technology LVPECL 155.52 Mbits/s digital I/O Jitter generation and jitter transfer compliant with the following: -- Telcordia Technologies* GR-253 -- ITU-T G.825 -- ITU-T G.958
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Applications
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SONET/SDH line origination equipment SONET/SDH add/drop multiplexers SONET/SDH cross connects SONET/SDH test equipment Digital video transmission
* Telcordia Technologies is a registered trademark of Bell Communications Research, Inc.
TTRN012G5 and TTRN012G7 Clock Synthesizer, 16:1 Data Multiplexer
Preliminary Data Sheet August 2000
Table of Contents
Contents Page
Features .................................................................................................................................................................... 1 Applications ............................................................................................................................................................... 1 Description.................................................................................................................................................................1 Pin Information ..........................................................................................................................................................4 Functional Overview .................................................................................................................................................. 9 Clock Synthesizer Operation .................................................................................................................................. 9 Multiplexer Operation............................................................................................................................................11 Clocking Modes and Timing Adjustments ...............................................................................................................12 Clockless Transfer Mode (CLKMODE, EXTADJN, MONAPAP/N) .......................................................................12 Contra-Directional Clocking Mode (CLKMODE, PHADJ[1:0]) ..............................................................................13 CML Output Structure (Used on Pins D2G5P/N, CK2G5P/N).................................................................................14 Choosing the Value of the External CML Reference Resistors (RREF1, RREF2) ...............................................14 Absolute Maximum Ratings.....................................................................................................................................15 Handling Precautions ..............................................................................................................................................15 Operating Conditions...............................................................................................................................................15 Electrical Characteristics .........................................................................................................................................16 Reference Frequency (REFCLKP/N) Specifications.............................................................................................16 LVPECL, CMOS, CML Input and Output Pins ......................................................................................................17 Timing Characteristics .............................................................................................................................................19 Transmit Timing ....................................................................................................................................................19 Outline Diagram.......................................................................................................................................................21 128-Pin QFP .........................................................................................................................................................21 Ordering Information................................................................................................................................................22 DS00-375HSPL Replaces DS00-155HSPL to Incorporate the Following Updates.................................................22
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Lucent Technologies Inc.
Preliminary Data Sheet August 2000
TTRN012G5 and TTRN012G7 Clock Synthesizer, 16:1 Data Multiplexer
Description (continued)
RESETN D0P D0N
TO DIGITAL LOGIC
INVDAT
INVDATN ENLBDN LBDP LBDN
16:1 MULTIPLEXER
D1P D1N
DATA RETIME
D2G5P D2G5N
ENCK2G5 CK2G5P CK2G5N
D15P D15N LOAD PARITYP PARITYN CLKMODE MONAPAP MONAPAN 0 CK155P CK155N 1 PHADJ[1:0] MANUAL PHASE ADJUST 1 0 AUTO PHASE ADJUST PARITY CHECK 0 1
PARITY REGISTER
VALIDP VALIDN
RREF2 RREF1
DIVIDE BY 16 TEST
EXTADJN REFCLKP REFCLKN LCKLOSSN ACQUISITION INDICATOR PHASE/ FREQ. DETECTOR CHARGE PUMP VCO
0
1
TESTN TSTCKP TSTCKN
LFP LFN VCP VCN
5-8060(F)r.3
Note: Diagram is representative of device functionality and conceptual signal flow. Internal implementation details may be different than shown.
Figure 1. Functional Block Diagram
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TTRN012G5 and TTRN012G7 Clock Synthesizer, 16:1 Data Multiplexer
Preliminary Data Sheet August 2000
Pin Information
REFCLKN REFCLKP 105
GND
GND
GND
GND
GND
GND
GND
GND
GND
128
127
126
125
124
123
122
121
120
119
118
117
116
115
114
113
112
111
110
109
108
107
106
104
103
GND
VCCD
VCCD
VCCA
VCCA
VCCA
VCCA
VCCA
VCN
VCP
LFN
LFP
NC
NC
NC
GND VCCD VCCD GND VCCD TSTCKP VCCD TSTCKN VCCD TESTN INVDATN VCCD GND D2G5P D2G5N GND CK2G5P CK2G5N GND VCCD ENCK2G5 RREF2 RREF1 VCCD GND LBDN LBDP GND VCCD ENLBDN GND GND LCKLOSSN VCCD VCCD NC GND GND
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38
102 101 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65
GND GND GND D15P D15N D14P D14N GND D13P D13N D12P D12N VCCD D11P D11N D10P D10N GND D9P D9N D8P D8N VCCD D7P D7N D6P D6N GND D5P D5N D4P D4N VCCD D3P D3N D2P D2N GND
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62 D1P
63 VCCD
GND
GND
GND
PHADJ1
PHADJ0
MONAPAN
CLKMODE
CK155N
VALIDN
EXTADJN
PARITYN
RESETN
CK155P
VALIDP
MONAPAP
PARITYP
GND
VCCD
VCCD
VCCD
D0N
D0P
D1N
NC
64
5-8066(F)r.3
Figure 2. Pin Diagram of 128-Pin QFP (Top View)
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Lucent Technologies Inc.
Preliminary Data Sheet August 2000
TTRN012G5 and TTRN012G7 Clock Synthesizer, 16:1 Data Multiplexer
Pin Information (continued)
Table 1. Pin Descriptions--2.5 Gbits/s and Related Signals Note: In Table 1, when operating the TTRN012G7 device at the OC-48/STM-16 rate, 2.5 Gbits/s should be interpreted as 2.48832 Gbits/s. When operating the TTRN012G7 device at the RS FEC OC-48/STM-16 rate, 2.5 Gbits/s should be interpreted as 2.66606 Gbits/s. (A similar interpretation should be made for 2.5 GHz.) Pin 14 15 27 26 17 18 23 22 21 Symbol* D2G5P D2G5N LBDP LBDN CK2G5P CK2G5N RREF1 RREF2 ENCK2G5 Type O O O I I Iu Level CML CML CML Analog Analog CMOS Name/Description Data Output (2.5 Gbits/s NRZ). 2.5 Gbits/s differential data output. Loopback Data Output. Additional 2.5 Gbits/s differential data output for system loopback. Clock Output (2.5 GHz). 2.5 GHz differential clock output. Resistor Reference 1. CML current bias reference resistor. (See Table 15, page 18 for values.) Resistor Reference 2. CML bias reference resistor. Connect a 1.5 k resistor to VCCD. Enable CK2G5P/N Clock Output. 0 = CK2G5P/N buffer powered off 1 or no connection = CK2G5P/N buffer enabled Enable LBDP/N Data Output (Active-Low). 0 = LBDP/N buffer enabled 1 or no connection = LBDP/N buffer powered off Invert D2G5P/N Data Output (Active-Low). 0 = invert 1 or no connection = noninvert
30
ENLBDN
Iu
CMOS
11
INVDATN
Iu
CMOS
* Differential pairs are indicated by P and N suffixes. For nondifferential pins, N at the end of the symbol name designates active-low. I = input, O = output. Iu indicates an internal pull-up resistor on this pin.
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TTRN012G5 and TTRN012G7 Clock Synthesizer, 16:1 Data Multiplexer
Preliminary Data Sheet August 2000
Pin Information (continued)
Table 2. Pin Descriptions--155.52 Mbits/s and Related Signals Note: In Table 2, when operating the TTRN012G7 device at the OC-48/STM-16 rate, 155 Mbits/s should be interpreted as 155.52 Mbits/s. When operating the TTRN012G7 device at the RS FEC OC-48/STM-16 rate, 155 Mbits/s should be interpreted as 166.62 Mbits/s. (A similar interpretation should be made for 155 MHz.) Pin 99 98 97 96 94 93 92 91 89 88 87 86 84 83 82 81 79 78 77 76 74 73 72 71 69 68 67 66 62 61 60 59 Symbol* D15P D15N D14P D14N D13P D13N D12P D12N D11P D11N D10P D10N D9P D9N D8P D8N D7P D7N D6P D6N D5P D5N D4P D4N D3P D3N D2P D2N D1P D1N D0P D0N Type I Level Name/Description LVPECL Data Input (155 Mbits/s). 155 Mbits/s differential data input. D15 is the most significant bit and is transmitted first on the LVPECL D2G5P/N output. LVPECL LVPECL LVPECL LVPECL LVPECL LVPECL LVPECL LVPECL LVPECL LVPECL LVPECL LVPECL LVPECL LVPECL
* Differential pairs are indicated by P and N suffixes. For nondifferential pins, N at the end of the symbol name designates active-low. I = input, O = output. Iu indicates an internal pull-up resistor on this pin.
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Lucent Technologies Inc.
Preliminary Data Sheet August 2000
TTRN012G5 and TTRN012G7 Clock Synthesizer, 16:1 Data Multiplexer
Pin Information (continued)
Table 2. Pin Descriptions--155.52 Mbits/s and Related Signals (continued) Pin 53 52 43 44 42 Symbol* CK155P CK155N PHADJ1 PHADJ0 CLKMODE Type O Iu Iu Level Name/Description LVPECL Clock Output (155 MHz). 155 MHz differential clock output. CMOS CMOS Phase Adjust. Adjusts phase of CK155P/N in 90 degree steps.
57 56 50 49 33 41
PARITYP PARITYN VALIDP VALIDN LCKLOSSN EXTADJN
I O
Clock Mode Select. Selects clockless data transfer mode. 0 = clockless transfer 1 or no connection = contra clock LVPECL Parity Input over Data (D[15:0]). LVPECL Parity Check Output. Validates the input of PARITYP/N. 0 = parity check does not agree with input PARITYP/N pins 1 = parity check agrees CMOS Loss of Lock (Active-Low). 0 = PLL out of lock. CMOS External Automatic Phase Adjust (Active-Low). Adjusts the 155 MHz clock output, CK155P/N. 0 = adjust phase of 155 MHz clock to data upon next transition of the D0P/N input signal 1 = no adjust Must be held low until the first rising transition of D0P/N. LVPECL Monitor Automatic Phase Adjust. Indicates when a phase adjustment in the automatic phase adjust block occurs. LVPECL Reference Clock Input (155 MHz). This clock is required. When applying the REFCLKP/N, set the REFCLKP/N to one of the following frequencies:
s
O Iu
47 46 105 106
MONAPAP MONAPAN REFCLKP REFCLKN
O I
155.52 MHz if using the TRCV012G5, or the TRCV012G7 at the 0C-48/STM-16 rate of 2.48832 GHz.
112 111 113 110
LFP LFN VCP VCN
I I
Analog Analog
166.62 MHz if using the TRCV012G7 at the RS FEC 0C-48/STM-16 rate of 2.66606 GHz. Loop Filter PLL. Connect LFP to VCP, and LFN to VCN.
s
VCO Control. Connect VCP to LFP, and VCN to LFN.
* Differential pairs are indicated by P and N suffixes. For nondifferential pins, N at the end of the symbol name designates active-low. I = input, O = output. Iu indicates an internal pull-up resistor on this pin.
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TTRN012G5 and TTRN012G7 Clock Synthesizer, 16:1 Data Multiplexer
Preliminary Data Sheet August 2000
Pin Information (continued)
Table 3. Pin Descriptions--Reset and Test Signals Pin 40 Symbol* RESETN Type Iu Level CMOS Name/Description Reset (Active-Low). Resets all synchronous logic. During a reset, the true data outputs are in the low state and the barred data outputs are in the high state. 0 = reset 1 or no connection = normal operation Test Clock Input. Buffer is powered down when TESTN = 1. Test Clock Select (Active-Low). 0 = select test clock 1 or no connection = select internal VCO
6 8 10
TSTCKP TSTCKN TESTN
I Iu
CML CMOS
* Differential pairs are indicated by P and N suffixes. For nondifferential pins, N at the end of the symbol name designates active-low. I = input, O = output. Iu indicates an internal pull-up resistor on this pin.
Table 4. Pin Descriptions--Power and No-Connect Signals Note: VCCA and VCCD have the same dc value, which is represented as VCC unless otherwise specified. However, high-frequency filtering is suggested between the individual supplies. Pin 108, 109, 114, 126, 127 2, 3, 5, 7, 9, 12, 20, 24, 29, 34, 35, 48, 51, 54, 63, 70, 80, 90, 104, 107 1, 4, 13, 16, 19, 25, 28, 31, 32, 37--39, 55, 58, 64, 65, 75, 85, 95, 100--103, 117--124, 128 36, 45, 115, 116, 125 Symbol* VCCA VCCD Type I I Level Power Power Name/Description Analog Power Supply (3.3 V). Digital Power Supply (3.3 V).
GND
I
Ground
Ground.
NC
--
--
No Connection. Pin 45 has an internal pull-up resistance of approximately 25 k. All of these pins must be left open.
* Differential pairs are indicated by P and N suffixes. For nondifferential pins, N at the end of the symbol name designates active-low. I = input, O = output. Iu indicates an internal pull-up resistor on this pin.
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Lucent Technologies Inc.
Preliminary Data Sheet August 2000
TTRN012G5 and TTRN012G7 Clock Synthesizer, 16:1 Data Multiplexer
Functional Overview
The Lucent Technologies Microelectronics Group TTRN012G5 operates at the OC-48/STM-16 data rate of 2.5 Gbits/s.* The TTRN012G7 device operates at either 2.5 Gbits/s or the RS FEC OC-48/STM-16 data rate of 2.7 Gbits/s. The device performs the clock synthesis and 16:1 data multiplexing operations required to support 2.5 Gbits/s applications compliant with Telcordia Technologies and ITU standards. Parallel 155 Mbits/s data is clocked into an input register and checked for valid parity. Both clockless data transfer and contra-directional clocking modes are supported. The data is then multiplexed into a 2.5 Gbits/s serial stream and output buffered for interfacing to a laser driver. A 2.5 GHz clock is synthesized from a reference clock and is used to retime the serial data. The 2.5 GHz clock is optionally available as an output. The serial data stream polarity can be inverted under pin control to make interfacing easier.
Clock Synthesizer Operation
The clock synthesizer uses a PLL to synthesize a 2.5 GHz clock from a reference frequency. A 155 MHz clock derived from the 2.5 GHz synthesized clock may be used to clock in the parallel data. Clock Synthesizer Loop Filter A typical loop filter that provides adequate damping for less than 0.1 dB of jitter peaking is shown in Figure 3. Connect the filter components and also connect LFP to VCP and connect LFN to VCN. The component values can be varied to adjust the loop dynamic response (see Table 5). Table 5. Clock Synthesizer Loop Filter Component Values Components C1* C2, C3 R1 Values for 2 MHz Loop Bandwidth 0.10 F 10% 10 pF 20% 680 5%
* Capacitor C1 should be either ceramic or nonpolar. LFP/VCP C1 C2 LFN/VCN R1 C3
5-8061(F)
Figure 3. Clock Synthesizer Loop Filter Components Clock Synthesizer Settling Time The clock synthesizer will acquire phase/frequency lock after a valid reference clock is applied to the REFCLKP/N input pins. The actual time to acquire lock is a function of the loop bandwidth selected. The loop will acquire lock within 5 ms when using the external loop bandwidth components corresponding to 2 MHz. Loss of Lock Indicator (LCKLOSSN) The LCKLOSSN pin indicates (active-low) when the clock synthesizer has exceeded phase-lock limits with the incoming REFCLKP/N phase. The lock detect function compares the phases of the input 155 MHz clock at the REFCLKP/N pins with the internally generated 155 MHz output clock at the CK155P/N pins. When the phase difference in the two signals is close to zero as determined by a second internal phase detector and filter, the lock detect signal LCKLOSSN is set to the logic high state. When the phase difference between the two signals is changing with time at a rate exceeding the filter's cutoff frequency, the device is declared out of lock and lock detect signal LCKLOSSN is set to a logic low. If a set of highly damped phase-locked loop parameters is chosen for the device, LCKLOSSN may exhibit more than one positive edge transition during the acquisition process before a steady logic high state is achieved.
* The OC-48/STM-16 data rate of 2.48832 Gbits/s is typically approximated as 2.5 Gbits/s in this document when referring to the application rate. The RS FEC OC-48/STM-16 data rate is 2.66606 Gbits/s and is approximated as 2.7 Gbits/s in this document. Similarly, the OC-3/ STM-1 data rate of 155.52 Mbits/s is typically approximated as 155 Mbits/s, and the RS FEC OC-3/STM-1 data rate of 166.62 Mbits/s is approximated as 166 Mbits/s. The exact frequencies are used only when necessary for clarity.
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TTRN012G5 and TTRN012G7 Clock Synthesizer, 16:1 Data Multiplexer
Preliminary Data Sheet August 2000
Functional Overview (continued)
Clock Synthesizer Operation (continued)
Clock Synthesizer Generated Jitter The clock synthesizer's generated jitter performance meets the requirements shown in Table 6. These specifications apply to the jitter generated at the 2.5 GHz clock pins (CK2G5P/N) when the jitter on the reference clock (REFCLKP/N) is within the specifications given in Table 9 on page 16, and the loop filter components are chosen to provide a loop bandwidth of 2 MHz. Table 6. Clock Synthesizer Generated Jitter Specifications Parameter Generated Jitter (p-p): Measured with 12 kHz to 20 MHz Bandpass Filter Generated Jitter (rms): Measured with 12 kHz to 20 MHz Bandpass Filter Typical 0.02 Max (Device)* 0.09 Unit UIp-p
0.002
0.009
UIrms
* This denotes the device specification for system SONET/SDH compliance when the loop filter in Table 5 and Figure 3 is used.
Clock Synthesizer Jitter Transfer The clock synthesizer's jitter transfer performance meets the requirement shown in Figure 4 when the loop filter values shown in Table 5 are used.
(2 MHz, 0.1 dB) 0
10 JITTER OUT/JITTER IN (dB)
20
30
40
50
60 1k 10k 100k FREQUENCY (Hz)
5-8062(F)r.1
1M
10M
100M
Figure 4. Clock Synthesizer Jitter Transfer
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Lucent Technologies Inc.
Preliminary Data Sheet August 2000
TTRN012G5 and TTRN012G7 Clock Synthesizer, 16:1 Data Multiplexer
Functional Overview (continued)
Multiplexer Operation
The parallel 155 Mbits/s data is clocked into an input buffer by a 155 MHz clock derived from the synthesized 2.5 GHz clock. The data is checked for parity and then clocked into a 16:1 multiplexer. The relationship between the parallel D[15:0] input data and the serial output data (D2G5P/N) is given in Figure 5. The D15 bit is the most significant bit (MSB) and is shifted out first in time in the serial output stream.
D15 (MSB)
D14
D1
D0 (LSB)
D15
(D15 SERIALLY SHIFTED OUT FIRST) TIME
(D0 SERIALLY SHIFTED OUT LAST)
5-8063(F)
Figure 5. Parallel Input to Serial Output Data Relationship High-Speed Serial Clock Output Enable (ENCK2G5) A separate output enable is provided for the 2.5 GHz clock output (CK2G5P/N). The enable is an active-high CMOS input with an internal pull-up resistor. The default condition will enable the CK2G5P/N output, and applying a ground or setting the enable pin (ENCK2G5) to logic low will disable the CK2G5P/N output. When disabled, the CK2G5P/N output pins should be either left floating, or be connected to a load which returns to VCC. The output must not be connected directly to ground when it is disabled. Loopback 2.5 GHz Data Output (LBDP/N, ENLBDN) An alternate 2.5 Gbits/s CML data output is available on the LBDP/N pin. This pin is provided for use in system loopback testing and avoids the need for off-chip signal splitting of the data signal path. The alternate 2.5 Gbits/s loopback data output may be enabled by setting the ENLBDN pin to logic low. ENLBDN enable is an active-low CMOS input with an internal pull-up resistor so the default condition will disable the LBDP/N output, and a ground or logic-low signal must be applied to enable the loopback output. When disabled, the LBDP/N pin should be either left floating, or be connected to a load which returns to VCC. The output must not be connected directly to ground when it is disabled. Parity Validation (VALIDP/N) The parity signal is expected to be a logic 0 when the number of 1s in the 16-bit input register is an even number, and the parity signal is expected to be a logic 1 when the number of 1s in the input register is an odd number. If the parity bit agrees with the parity in the input register, then the VALIDP/N signal will be logic high. If the parity signal is not generated, the VALIDP/N pin should be left open without termination to avoid meaningless signal swings and avoid unnecessary power dissipation.
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TTRN012G5 and TTRN012G7 Clock Synthesizer, 16:1 Data Multiplexer
Preliminary Data Sheet August 2000
Clocking Modes and Timing Adjustments
Clockless Transfer Mode (CLKMODE, EXTADJN, MONAPAP/N)
The device supports two timing modes for the 155 Mbits/s data input. In clockless transfer mode (CLKMODE = 0), data may be sent to the device without a clock. After phase/frequency lock has been obtained by the clock synthesizer, the device automatically finds the correct phase of the internal 155 MHz clock by sampling the rising edge of the D0P/N data bit. The skew of any data bit D[15:0]P/N must be less than 500 ps relative to D0P/N. If the phase of the incoming data shifts more than 2400 ps from the time the automatic phase adjustment occurred, the device will automatically readjust its internal clocking phase. Data integrity may not be obtained at the instant of phase adjustment, and an error burst of up to 16 data bits may occur. The user may optionally force the automatic phase adjustment to occur by toggling the EXTADJN pin (active-low) and keeping it low for at least 12.8 ns after the next rising edge of the D0P/N input. The phase will be adjusted one time upon the first occurrence of a low-to-high transition of the D0P/N data bit while the EXTADJN pin is in the logic-low state. To externally adjust the phase again, the RESETN pin must be brought low then high to enable another phase adjustment. When CLKMODE = 0, the 155 MHz output clock (CK155P/N) is active but should be left unconnected to conserve power. MONAPAP/N can be used for the monitoring and reporting of phase adjustments. The MONAPAP/N output will go high in the following sequence:
s s s s
EXTADJN pin transitions to logic-low state A rising edge of the D0P/N input occurs MONAPAP/N transitions to logic 1 three CK2G5 cycles (1.2 ns) later MONAPAP/N will stay high for 12 CK2G5 cycles (4.8 ns)
The first sixteen D2G5 data output bits after the rising edge of MONAPAP/N are invalid.
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Lucent Technologies Inc.
Preliminary Data Sheet August 2000
TTRN012G5 and TTRN012G7 Clock Synthesizer, 16:1 Data Multiplexer
Clocking Modes and Timing Adjustments (continued)
Contra-Directional Clocking Mode (CLKMODE, PHADJ[1:0])
In the contra-directional clocking mode (CLKMODE = 1), the data is sampled with the internal 2.5 GHz clock at the time of the falling edge of CK155P (see Figure 8 on page 19 for timing details). The device sends a 155 MHz clock with one of four user-selectable phases out to the upstream device for clocking the data toward the device. The user can program PHADJ[1:0] to adjust the phase of CK155 as a function of PWB layout and upstream device propagation delay in order to meet the setup and hold time of the 155 Mbits/s data to the device. With a PHADJ[1:0] = [11], the data is sampled by the internal CK2G5 clock at the falling edge of CK155P. PHADJ[1:0] changes the phase of the CK155P clock without changing the input data sampling time. PHADJ[1:0] setting information is given in Table 7, and the phase relationship of CK155 for each PHADJ[1:0] setting is shown in Figure 6. Table 7. PHADJ Settings for CK155 Output Clock (Contra-Clocking Mode) Input Pins PHADJ1 1 1 0 0 PHADJ0 1 0 1 0 Phase (See part A of Figure 6.) (See part B of Figure 6.) (See part C of Figure 6.) (See part D of Figure 6.)
A. (0 DEG.)
B. (-90 DEG.)
C. (-180 DEG.)
D. (-270 DEG.)
TIME
5-8064(F)r.2
Figure 6. CK155 Phase Relation vs. PHADJ Setting
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TTRN012G5 and TTRN012G7 Clock Synthesizer, 16:1 Data Multiplexer
Preliminary Data Sheet August 2000
CML Output Structure (Used on Pins D2G5P/N, CK2G5P/N)
The CML architecture is essentially a current-steering mechanism combined with an amplifier. This makes the output swing of the signal a function of the termination resistor and the programmable output current. The user should connect external termination resistors from the CML output pins to VCC. The on-chip, 100 pull-up resistors provide a dc path when using an ac-coupled load. The voltage swing of a CML signal is typically 400 mV, half that of ECL/PECL. The lower pulse amplitude reduces noise transients, crosstalk, and EMI. It also uses half the amount of current through the termination resistors. The schematic of a typical CML output structure is shown in Figure 7.
DEVICE-INTERNAL CML OUTPUT BUFFER CIRCUIT VCC VCC
VCC
VCC
50 100 100 IOUT
50
EXTERNAL OUTPUT TERMINATION
IOUT VCC
RREF1 + 18X VREF RREF2 -
5-8065(F)r.2
Figure 7. Typical CML Output Structure
Choosing the Value of the External CML Reference Resistors (RREF1, RREF2)
The flexibility of the CML interface permits certain parameters to be customized for a particular application. The RREF1 resistor controls the CML output driver current source. Adjusting this tail current and termination resistors will allow signal amplitude control (see the CML output specifications for limitations, page 18 and page 20) and flexibility in termination schemes. With RREF2 set to 1.5 k, the equation for the CML output current is the following: Iout = (18)*(1.21)/RREF1 The CML outputs have on-chip 100 load resistors to VCC to accommodate capacitive ac coupling. With a 50 1% load, the effective load resistance will be 33.33 6%. For a 400 mV voltage swing into the 50 load, set RREF1 to 1.8 k. For a 600 mV voltage swing, set RREF1 to 1.2 k. In both cases, RREF2 remains fixed at a value of 1.5 k.
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Lucent Technologies Inc.
Preliminary Data Sheet August 2000
TTRN012G5 and TTRN012G7 Clock Synthesizer, 16:1 Data Multiplexer
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability. Parameter Power Supply Voltage (VCC) Storage Temperature Pin Voltage Min -- -40 GND - 0.5 Max 4.0 125 VCC + 0.5 Unit V C V
Handling Precautions
Although protection circuitry has been designed into this device, proper precautions should be taken to avoid exposure to electrostatic discharge (ESD) during handling and mounting. Lucent employs a human-body model (HBM) and charged-device model (CDM) for ESD-susceptibility testing and protection design evaluation. ESD voltage thresholds are dependent on the circuit parameters used in the defined model. No industrywide standard has been adopted for the CDM. However, a standard HBM (resistance = 1500 , capacitance = 100 pF) is widely used and, therefore, can be used for comparison purposes: Device TTRN012G5 TTRN012G7 Voltage 200 V 200 V
Operating Conditions
Table 8. Recommended Operating Conditions Parameter Power Supply (dc voltage) Ground Input Voltage: Low High Temperature: Ambient Power Dissipation: MBIC 025 BiCMOS MBIC 025 SiGe BiCMOS Symbol -- -- VIL VIH TA PD PD Min 3.135 -- See Table 10, Table 12, Table 14. -40 -- -- Typ 3.3 -- See Table 10, Table 12, Table 14. -- 1.5 0.9 Max 3.465 -- See Table 10, Table 12, Table 14. 85 TBD 1.14 Unit V V V V C W W
Lucent Technologies Inc.
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TTRN012G5 and TTRN012G7 Clock Synthesizer, 16:1 Data Multiplexer
Preliminary Data Sheet August 2000
Electrical Characteristics
Reference Frequency (REFCLKP/N) Specifications
The device requires a differential LVPECL reference clock input.
s
When using the TTRN012G5 device, a 155.52 MHz differential LVPECL clock must be applied to the REFCLKP/N input. When using the TTRN012G7 device at the OC-48/STM-16 rate, a 155.52 MHz differential LVPECL clock must be applied to the REFCLKP/N input. When using the TTRN012G7 device at the RS FEC OC-48/STM-16 rate, a 166.62 MHz differential LVPECL clock must be applied to the REFCLKP/N input.
s
s
Table 9 provides the characteristics of the REFCLKP/N input. Table 9. Reference Frequency Characteristics Parameter Reference Frequency (REFCLKP/N) Reference Frequency Tolerance* Duty Cycle Phase Jitter Temperature Supply Voltage Min -- -- -20 40 -- -40 3.10 Typ 155.52 166.62 -- -- -- -- -- Max -- -- 20 60 3 85 3.60 Unit MHz MHz ppm % ps(rms) C V
* Includes effects of power supply variation, temperature, electrical loading, and aging. The 20 ppm tolerance is required to meet SONET/SDH requirements. For non-SONET/SDH compliant systems, looser tolerances may apply. Measured under one 3.3 V LVPECL load. Includes frequency components up to 2 MHz. Specified range is to be compatible with environmental specification of TTRN012G5 or TTRN012G7. Applications requiring a reduced temperature range may specify the reference frequency oscillator accordingly.
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Lucent Technologies Inc.
Preliminary Data Sheet August 2000
TTRN012G5 and TTRN012G7 Clock Synthesizer, 16:1 Data Multiplexer
Electrical Characteristics (continued)
LVPECL, CMOS, CML Input and Output Pins
Notes: 1. For Table 10 through Table 17, VCC = 3.3 V 5%, TA = -40 C to +85 C; these tables apply to both MBIC 025 BiCMOS and MBIC 025 SiGe BiCMOS technologies. 2. For more information on interpreting CML specifications, see the CML Output Structure (Used on Pins D2G5P/N, CK2G5P/N) section on page 14. Table 10. LVPECL Input Pin Characteristics Applicable Pins D[15:0]P/N, PARITYP/N, REFCLKP/N Symbol VIH VIL IIH IIL Parameter Input Voltage High Input Voltage Low Input Current High Leakage Input Current Low Leakage Conditions Referred to VCC Referred to VCC VIN = VIH (max) VIN = VIL (min) Min -1165 -1810 -- 5 Typ -- -- -- -- Max -880 -1475 20 Unit mV mV A A
Table 11. LVPECL Output Pin Characteristics Applicable Symbol Parameter Pins Output Voltage High CK155P/N, VOH VALIDP/N, MONAPAP/N Output Voltage Low VOL Conditions Load = 50 connected to VCC - 2.0 V Load = 50 connected to VCC - 2.0 V Min Typ Max Unit V
VCC - 1.31 VCC - 1.20 VCC - 0.90
VCC - 1.95 VCC - 1.88 VCC - 1.80
V
Table 12. CMOS Input Pin Characteristics Applicable Pins RESETN, PHADJ[1:0], EXTADJN, INVDATN, TESTN, CLKMODE, ENCK2G5, ENLBDN Symbol VIH VIL IIH IIL Parameter Input Voltage High Input Voltage Low Input Current High Leakage Input Current Low Leakage Conditions -- -- VIN = VCC VIN = GND Min VCC - 1.0 GND -- -225 Max VCC 1.0 10 -- Unit V V A A
Table 13. CMOS Output Pin Characteristics Applicable Pins LCKLOSSN Symbol VOH VOL Cl Parameter Output Voltage High Output Voltage Low Output Load Capacitance Conditions IOH = -4.0 mA IOL = 4.0 mA -- Min VCC - 0.5 GND -- Max VCC 0.5 15 Unit V V pF
Lucent Technologies Inc.
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TTRN012G5 and TTRN012G7 Clock Synthesizer, 16:1 Data Multiplexer
Preliminary Data Sheet August 2000
Electrical Characteristics (continued)
LVPECL, CMOS, CML Input and Output Pins (continued)
Table 14. CML Input Pin dc Characteristics Applicable Pins TSTCKP/N Symbol VIL VIH Parameter Input Voltage Low Input Voltage High Conditions -- Min -- -- Typ VCC - 0.4 VCC Max -- -- Unit V V
Table 15. CML Output Pin dc Characteristics Applicable Pins D2G5P/N, LBDP/N, CK2G5P/N Symbol VOL VOH IOL IOH Parameter Output Voltage Low Output Voltage High Output Current Low Output Current High Conditions RREF2 = 1.5 k, RL = 50 , All signals differential Min* VCC - 1.2 -- 3.6 -- Typ VCC - 0.4 VCC 12 0 Max -- VCC + 0.3 18 1 Unit V V mA A
* Applies when RREF1 = 1 k. Applies when RREF1 = 1.8 k. Applies when RREF1 = 6 k.
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Lucent Technologies Inc.
Preliminary Data Sheet August 2000
TTRN012G5 and TTRN012G7 Clock Synthesizer, 16:1 Data Multiplexer
Timing Characteristics
Transmit Timing
Figure 8 shows the timing relationships between the 155.52 MHz or 166.62 MHz output clock (CK155P/N) and the 155.52 Mbits/s or 166.62 Mbits/s input data (D[15:0]P/N) and the input parity valid check (PARITYP/N). Also shown is the relationship of the VALIDP/N output signal to CK155P/N; this relationship is true for both the contraclocking mode and the clockless transfer mode.
tPERIOD CK155P OUTPUT CK155N tSU INPUTS D[15:0]P/N, PARITYP/N DATA 1 tDD OUTPUT VALIDP/N VALID 1 VALID 2
5-7726(F).hr.2
tHOLD DATA 2
Note: TSU and THOLD only apply in contra-clocking mode when CLKMODE = 1.
Figure 8. Transmit Timing Waveform The 155 MHz or 166 MHz output clock and data signals from Figure 8 are characterized in Table 16. Table 16. LVPECL Input/Output Pin ac Timing Characteristics Applicable Pins CK155P/N Symbol -- tPERIOD Parameter Conditions Min 40 -- -- 2.0 Typ 50 6.43 6.00 -- Max 60 -- -- -- Unit % ns ns ns
D[15:0]P/N, PARITYP/N, CK155P/N
tSU
tHOLD
tRISE, tFALL tSKEW VALIDP/N, CK155P/N tDD tRISE, tFALL tSKEW
Duty Cycle All signals differential 155.52 MHz Clock Period 166.62 MHz Clock Period Input Timing Setup from Clock Edge to CLKMODE = 1, All D[15:0]P/N or to signals differential PARITYP/N Edge Hold from Clock Edge to CLKMODE = 1, D[15:0]P/N or to All signals PARITYP/N Edge differential Rise, Fall Times: All signals 20%--80% differential Transition Skew Rise to Fall Output Timing Time Delay from Clock Edge All signals to VALIDP/N Edge differential Rise, Fall Times: 20%--80% Transition Skew Rise to Fall
0.5
--
--
ns
200 -100 -300 200 -100
500 0 800 500 0
800 100 1500 800 100
ps ps ps ps ps
Lucent Technologies Inc.
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TTRN012G5 and TTRN012G7 Clock Synthesizer, 16:1 Data Multiplexer
Preliminary Data Sheet August 2000
Timing Characteristics (continued)
Transmit Timing (continued)
Figure 9 shows the timing relationship between the 2.5 GHz or 2.7 GHz output clock (CK2G5P/N) and the 2.5 Gbits/s or 2.7 Gbits/s output data (D2G5P/N).
tPERIOD CK2G5P OUTPUT CK2G5N tDD OUTPUT D2G5P/N DATA 1 DATA 2 DATA 3
5-7726(F).er.4
Figure 9. Transmit Timing Waveform with 2.5 GHz or 2.7 GHz Clock The 2.5 GHz or 2.7 GHz output clock and data signals from Figure 9 are characterized in Table 17. Table 17. CML Output Pin ac Timing Characteristics Applicable Pins CK2G5P/N Symbol -- tPERIOD tDD tRISE, tFALL tSKEW Parameter Duty Cycle 2.48832 GHz Clock Period 2.66606 GHz Clock Period Time Delay from Clock Edge to Data Edge Rise, Fall Times: 20%--80% Transition Skew Rise to Fall Conditions RREF1 = 1.8 k RREF2 = 1.5 k RL = 50 All signals differential Min 40 -- -- 151 50 -10 Typ 50 402 375 201 80 0 Max 60 -- -- 251 120 10 Unit % ps ps ps ps ps
D2G5P/N, CK2G5P/N, LBDP/N
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Lucent Technologies Inc.
Preliminary Data Sheet August 2000
TTRN012G5 and TTRN012G7 Clock Synthesizer, 16:1 Data Multiplexer
Outline Diagram
128-Pin QFP
Dimensions are in millimeters.
17.20 0.20 13.89 0.10 8.13 (REF)
128
2.89 (REF)
103
1
102
1
5.87 (REF) 17.52 0.18 19.86 0.10 23.20 0.20 1.600 0.150
YYWWL XXXXXKNV
Code Name
LUCENT
8.13 (REF)
0.800 0.150 DETAIL A
38 65
39
64
DETAIL A
11.43 0.18
2.80 (REF)
3.30 (REF) 0.20 0.06 2.89 (REF) 0.50 (TYP) 8.13 (REF) 0.000 TO 0.100
0.38 (REF)
(8.13)2 x 0.305 HEAT SINK
5-8416(F)r.2
Lucent Technologies Inc.
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TTRN012G5 and TTRN012G7 Clock Synthesizer, 16:1 Data Multiplexer
Preliminary Data Sheet August 2000
Ordering Information
Device Code TTRN012G5: TTRN012G5 (BiCMOS) TTRN012G53XE1 (SiGe BiCMOS) TTRN012G7: TTRN012G7 (BiCMOS) TTRN012G73XE1 (SiGe BiCMOS) -- Package Temperature Comcode (Ordering Number) 108419961 108700709 108560335 108700717 --
128-pin QFP 128-pin QFP 128-pin QFP 128-pin QFP --
-40 C to +85 C -40 C to +85 C -40 C to +85 C -40 C to +85 C --
DS00-375HSPL Replaces DS00-155HSPL to Incorporate the Following Updates
1. Added a second technology, MBIC 025 SiGe BiCMOS, to the data sheet. 2. Page 7, REFCLKP/N pins, corrected definition. 3. Page 15, Absolute Maximum Ratings, added maximum power supply value of 4.0 V. 4. Page 15, Handling Precautions, corrected ESD threshold value from TBD to 200 V. 5. Page 15, Table 8, added MBIC 025 SiGe BiCMOS power dissipation values. 6. Page 17, Table 11, updated LVPECL Output Pin Characteristics. 7. Page 22, Ordering Information, added MBIC 025 SiGe BiCMOS comcodes.
For additional information, contact your Microelectronics Group Account Manager or the following: http://www.lucent.com/micro INTERNET: docmaster@micro.lucent.com E-MAIL: N. AMERICA: Microelectronics Group, Lucent Technologies Inc., 555 Union Boulevard, Room 30L-15P-BA, Allentown, PA 18109-3286 1-800-372-2447, FAX 610-712-4106 (In CANADA: 1-800-553-2448, FAX 610-712-4106) ASIA PACIFIC: Microelectronics Group, Lucent Technologies Singapore Pte. Ltd., 77 Science Park Drive, #03-18 Cintech III, Singapore 118256 Tel. (65) 778 8833, FAX (65) 777 7495 CHINA: Microelectronics Group, Lucent Technologies (China) Co., Ltd., A-F2, 23/F, Zao Fong Universe Building, 1800 Zhong Shan Xi Road, Shanghai 200233 P. R. China Tel. (86) 21 6440 0468, ext. 325, FAX (86) 21 6440 0652 JAPAN: Microelectronics Group, Lucent Technologies Japan Ltd., 7-18, Higashi-Gotanda 2-chome, Shinagawa-ku, Tokyo 141, Japan Tel. (81) 3 5421 1600, FAX (81) 3 5421 1700 EUROPE: Data Requests: MICROELECTRONICS GROUP DATALINE: Tel. (44) 7000 582 368, FAX (44) 1189 328 148 Technical Inquiries: GERMANY: (49) 89 95086 0 (Munich), UNITED KINGDOM: (44) 1344 865 900 (Ascot), FRANCE: (33) 1 40 83 68 00 (Paris), SWEDEN: (46) 8 594 607 00 (Stockholm), FINLAND: (358) 9 3507670 (Helsinki), ITALY: (39) 02 6608131 (Milan), SPAIN: (34) 1 807 1441 (Madrid)
Lucent Technologies Inc. reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information.
Copyright (c) 2000 Lucent Technologies Inc. All Rights Reserved
August 2000 DS00-375HSPL (Replaces DS00-155HSPL)

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