3Com 3C16954, User Manual

Page: 34 / 54

34 A
PPENDIX
B: P
IN
-
OUTS
Modem Cable
9-pin to RS-232 25-pin
RJ-45 Pin
Assignments
Pin assignments are identical for 10BASE-T and 100BASE-TX RJ-45
connectors
Table 6 Pin assignments
Pin Number Signal Function
Ports configured as MDI
1 Transmit data
2 TxData – Transmit data
3 Receive Data
4 Not assigned
5 Not assigned
6 RxData – Receive data
7 Not assigned
8 Not assigned
Ports configured as MDIX
1 Receive Data
2 RxData – Receive Data
3 Transmit data
4 Not assigned
5 Not assigned
6 TxData – Transmit data
7 Not assigned
8 Not assigned
16954ua.book Page 34 Friday, April 30, 1999 9:39 AM