Modem Cable; Rj45 Pin Assignments - 3Com 3C16950 User Manual

40 A B: P -
PPENDIX IN

Modem Cable

RJ45 Pin
Assignments
OUTS
9-pin to RS-232 25-pin
Pin assignments are identical for 10BASE-T and 100BASE-TX RJ45
connectors
Table 6 Pin assignments
Pin Number
Ports configured as MDI
1
2
3
4
5
6
7
8
Ports configured as MDIX
1
2
3
4
5
6
7
8
Signal
TxData +
TxData –
RxData +
Not assigned
Not assigned
RxData –
Not assigned
Not assigned
RxData +
RxData –
TxData +
Not assigned
Not assigned
TxData –
Not assigned
Not assigned
Function
Transmit data
Transmit data
Receive Data
Receive data
Receive Data
Receive Data
Transmit data
Transmit data