STANDARD PRODUCT
DATA SHEET
PMC-1970624
ISSUE 10
PM4351 COMET
COMBINED E1/T1 TRANSCEIVER
LIST OF TABLES
Table 1 - Backplane Transmit Interface (4 pins) ......................................... 19
Table 2 - Backplane Receive Interface (4 pins) .......................................... 21
Table 3 - Transmit Line Interface (6 pins) ................................................... 23
Table 4 - Receive Line Interface (4 pins) .................................................... 24
Table 5 - Timing Options Control (5 pins) ................................................... 24
Table 6 - Analog Support Circuitry (4 pins) ................................................. 25
Table 7 - JTAG (IEEE 1149.1) Boundary Scan Test Interface (5 pins)........ 26
Table 8 - Microprocessor Interface (23 pins) .............................................. 26
Table 9 - Power and Ground (25 pins)........................................................ 28
Table 10 - PM4351-RI Pin Summary ............................................................ 30
Table 11 PM4351-NI Pin Summary .............................................................. 30
Table 12 - External Component Descriptions ............................................... 34
Table 13 - Typical Input Return Loss at Receiver ......................................... 35
Table 14 - Termination Resistors, Transformer Ratios and TRL ................... 35
Table 15 - E1-FRMR Framing States............................................................ 44
Table 16 - Normal Mode Register Memory Map ........................................... 66
Table 17 - TJAT FIFO Output Clock Source ................................................ 90
Table 18 - TJAT PLL Source ......................................................................... 91
Table 19 - Transmit Timing Options Summary.............................................. 91
Table 20 - Loss of Signal Thresholds.......................................................... 109
Table 21 - Receive Backplane NXDS0 Mode Selection ............................. 137
Table 22 - Receive Backplane Rate............................................................ 139
PROPRIETARY AND CONFIDENTIAL
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