3Com 3C16980 User Guide - Page 40
Modem Cable, RJ45 Pin Assignments, Pin Number, Signal, Function
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40 APPENDIX B: PIN-OUTS Modem Cable 9-pin to RS-232 25-pin RJ45 Pin Assignments Pin assignments are identical for 10BASE-T and 100BASE-TX RJ45 connectors Table 6 Pin assignments Pin Number Signal Ports configured as MDI 1 TxData + 2 TxData - 3 RxData + 4 Not assigned 5 Not assigned 6 RxData - 7 Not assigned 8 Not assigned Function Transmit data Transmit data Receive Data Receive data
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40
A
PPENDIX
B: P
IN
-
OUTS
Modem Cable
9-pin to RS-232 25-pin
RJ45 Pin
Assignments
Pin assignments are identical for 10BASE-T and 100BASE-TX RJ45
connectors
Table 6
Pin assignments
Pin Number
Signal
Function
Ports configured as MDI
1
TxData +
Transmit data
2
TxData –
Transmit data
3
RxData +
Receive Data
4
Not assigned
5
Not assigned
6
RxData –
Receive data
7
Not assigned
8
Not assigned