Installation guide

A-80 Cisco 4000 Series Installation Guide

Ethernet Cable Pinouts

100BaseT Connector Pinouts

The two interface receptacles on the Fast Ethernet network processor module are a single

MII, 40-pin, D-shell type, and a single RJ-45. Each connection supports IEEE 802.3u

interfaces that are compliant with the 100BaseX and 100BaseT standards. Only one can be

used at a time.

The RJ-45 connection does not require an external transceiver. The MII connection requires

an external physical sublayer (PHY) and an external transceiver. Figure A-17 shows the

RJ-45 connectors.

1. Any pin not shown is not

connected.

Table A-30 RJ-45 10BaseT Connector Pinouts

Description

1 TX+

2 TX–

3 RX+

4–

5–

6 RX–

7–

8–