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10BaseT and 100BaseTX Connectors
Connectors and Cables
This appendix provides BMM connector pinouts and instructions for identifying and connecting cables and adapters to ports.
10BaseT and 100BaseTX Connectors
The 10BaseT and 100BaseTX ports use standard RJ-45 connectors for Category 5 UTP cabling (see ). The 10BaseT and 100BaseTX ports have their transmit (TD) and receive (RD) pairs internally crossed. shows the connector pinout, and shows the straight-through and crossover cable schematics.
Figure B-1 RJ-45 10BaseT and 100BaseTX Port Connector
Figure B-2 10BaseT and 100BaseT Pinout and Connector
Figure B-3 Straight-Through and Crossover Cable Schematics
100BaseFX Connector
The 100BaseFX port connector (see ) is a multimode fiber-optic SC (square connector).
Figure B-4 100BaseFX SC Connector
Console Cables and Adapters
The RJ-45-to-RJ-45 rollover cable and adapters supplied with the BMM are used to connect the BMM console port to a console terminal or modem. The following sections describe cables and adapters for the console port.
Identifying a Rollover Cable
You can identify a rollover cable by comparing the two modular ends of the cable. Hold the cables side-by-side, with the tab at the back. The wire connected to the pin on the outside of the left plug should be the same color as the wire connected to the pin on the outside of the right plug. (See .) If your cable came from Cisco Systems, pin 1 is white on one connector, and pin 8 is white on the other (a rollover cable reverses pins 1 and 8, 2 and 7, 3 and 6, and 4 and 5).
Figure B-5 Identifying a Rollover Cable
Connector and Adapter Pinouts
, , and list the pinouts for the console port, the RJ-45-to-RJ-45 rollover cable, and the following adapters:
•
RJ-45-to-DB-9 female DTE adapter (labeled "TERMINAL")
•
•
Table B-1
RTS
11
8
8
CTS
DTR
2
7
6
DSR
TxD
3
6
2
RxD
GND
4
5
5
GND
GND
5
4
5
GND
RxD
6
3
3
TxD
DSR
7
2
4
DTR
CTS
81
1
7
RTS
1 Pin 1 is connected internally to Pin 8.
Console-to-PC Signaling Using a DB-9 Adapter
Table B-2
RTS
11
8
5
CTS
DTR
2
7
6
DSR
TxD
3
6
3
RxD
GND
4
5
7
GND
GND
5
4
7
GND
RxD
6
3
2
TxD
DSR
7
2
20
DTR
CTS
81
1
4
RTS
1 Pin 1 is connected internally to Pin 8.
Console-to-Terminal Signaling Using a DB-25 Adapter
Table B-3
RTS
11
8
4
RTS
DTR
2
7
20
DTR
TxD
3
6
3
TxD
GND
4
5
7
GND
GND
5
4
7
GND
RxD
6
3
2
RxD
DSR
7
2
8
DCD
CTS
81
1
5
CTS
1 Pin 1 is connected internally to Pin 8.
Console-to-Modem Signaling Using a DB-25 Adapter
