GoTo ConnectorCONNECTORGoTo Main

Ethernet 100Base-T4

100Base-T4 uses all four pairs. 100Base-TX only uses two pairs.

RJ45 FEMALE CONNECTOR (at the network interface cards/hubs)
RJ45 FEMALE CONNECTOR (at the cables)

RJ45 FEMALE CONNECTOR at the network interface cards/hubs.
RJ45 MALE CONNECTOR at the cables.

Pin Name Description
1 TX_D1+ Tranceive Data+
2 TX_D1- Tranceive Data-
3 RX_D2+ Receive Data+
4 BI_D3+ Bi-directional Data+
5 BI_D3- Bi-directional Data-
6 RX_D2- Receive Data-
7 BI_D4+ Bi-directional Data+
8 BI_D4- Bi-directional Data-

Note: TX & RX are swapped on Hub's. Don't know about Bi-directional data.

Contributor: Joakim Ögren, Kim Scholte


Copyright © The Hardware Book Team 1996-2001.
May be copied and redistributed, partially or in whole, as appropriate.
Document last modified: 2001-06-07