Processor Port Pin Assignments - 3Com CoreBuilder 3500 Getting Started Manual

Processor Port Pin Assignments

This section describes the pin assignments for the
management access ports on the system processor.
Table 6 shows the modem port pin assignments.
Table 7 shows the terminal port pin assignments.
Table 8 shows the pin assignments for the
out-of-band 10BASE-T Ethernet port.
Table 6 Modem Port Pin Assignments
Pin No. Signal Description
1 DCD Data carrier detect
2 RXDA Received data
3 TXDA Transmitted data
4 DTR Data terminal ready
5 Signal ground
6 Not used
7 RTS Request to send
8 CTS Clear to send
9 Not used
Cabling the System Processor Ports
Table 7 Terminal Port Pin Assignments
Pin No. Signal Description
1 Not used
2 RXDB Received data
3 TXDB Transmitted data
4 Not used
5 Signal ground
6 Not used
7 Not used
8 Not used
9 Not used
Table 8 10BASE-T Port Pin Assignments
Pin No. Signal Description
1 TD + Transmit Data +
2 TD – Transmit Data –
3 RD + Receive Data +
4 Not used
5 Not used
6 RD – Receive Data –
7 Not used
8 Not used
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