B-2
Table B-2 RJ-45 MDI-X interface pinout assignment
10Base-T/100Base-TX 1000Base-T
Pinout
Signal Function Signal Function
1 Rx+
Receive data
BIDB+
Bi-directional data wire B+
2 Rx-
Receive data
BIDB-
Bi-directional data wire B-
3 Tx+
Send data
BIDA+
Bi-directional data wire A+
4 Reserved
- BIDD+
Bi-directional data wire D+
5 Reserved
- BIDD-
Bi-directional data wire D-
6 Tx-
Send data
BIDA-
Bi-directional data wire A-
7 Reserved
- BIDC+
Bi-directional data wire C+
8 Reserved
- BIDC-
Bi-directional data wire C-