70 APPENDIX B: PIN-OUTS
Modem Cable 9-pin to RS-232 25-pin
RJ-45 Pin
Assignments
Pin assignments are identical for 10BASE-TX and 100BASE-T RJ-45
connectors.
Table 10 Pin assignments
Pin Number Signal Function
Ports configured as MDI
1 Transmit Data + Bidirectional Data A+
2 Transmit Data + Bidirectional Data A-
3 Receive Data + Bidirectional Data B+
4 Not assigned Bidirectional Data C+
5 Not assigned Bidirectional Data C-
6 Receive Data – Bidirectional Data B-
7 Not assigned Bidirectional Data D+
8 Not assigned Bidirectional Data D-
DUA1720-3AAA05.book Page 70 Friday, March 7, 2003 11:53 AM
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