Appendix A Specifications

Gigabit Ethernet RJ-45 Port Pinouts

Table A-11

RJ-45 Receptacle Pinouts (continued)

 

 

 

Pin

FE Signal

GE Signal

 

 

 

6

RX DATA–

Rx B–

 

 

 

7

N/C

Rx D+

 

 

 

8

N/C

Rx D–

 

 

 

1.TX DATA = Transmit Data

2.RX DATA = Receive Data

Note With reference to the RJ-45 pinouts in Table A-11, proper common-mode line terminations should be used for the unused Category 5 UTP cable pairs 4/5 and 7/8. Common-mode line termination reduces electromagnetic interference (EMI).

Depending on your RJ-45 interface cabling requirements, use the pinouts shown in Figure A-2and Figure A-3for Gigabit Ethernet straight-through and crossover twisted-pair cable connections. Use Figure A-4for Ethernet/Fast Ethernet straight-through and crossover twisted-pair cable connections.

Figure A-2

1

1TPO+

2TPO-

3TP1+

6TP1-

4TP2+

5TP2-

7TP3+

8TP3-

Four Twisted-Pair Straight-Through Cable Schematics for 10/100/1000 and 1000BASE-T SFP Module Ports

 

2

 

1

TP1+

 

2

TP1-

 

3

TPO+

 

6

TPO-

 

4

TP3+

 

5

TP3-

129086

7

TP2+

 

8

TP2-

 

1

Router

2

Hub

Cisco 7201 Installation and Configuration Guide

 

OL-11364-04

A-7

 

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Cisco Systems CISCO7201 manual RX Data, Rx B, Rx D+, Router Hub