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Cabling Specifications

Cabling Specifications

This appendix lists the pinouts for ports on the supervisor engine and other modules and for some of the interface cables that connect modules to the external network. All pins not specifically listed are not connected.

The following is a list of the signal summaries contained in this appendix:

Console Port Signals

The console port on the supervisor engine module is an EIA/TIA-232, data communications equipment (DCE), DB-25 receptacle. Both data set ready (DSR) and data carrier detect (DCD) are active when the system is running. The Request To Send (RTS) signal tracks the state of the Clear To Send (CTS) input. The console port does not support modem control or hardware flow control. Table C-1 lists the signals used on this port.


Table  C-1: Supervisor Engine Module DB-25 Console Port Signals
Pin Signal Direction Description
1 GND

Ground
2 RxD-

-->

Receive data -
3 TxD+

<--

Transmit Data +
4 CTS

<--

Clear to send
5 RTS

-->

Return to send
7 GND

Ground
8 DTR

-->

Data terminal ready
11 +5V

+ 5 Volts
18 GND

Ground
20 DCD

<--

Data carrier detect

Fast Ethernet Connector Signals

Most Ethernet transceivers require a transceiver cable to connect an Ethernet transceiver to the supervisor engine module and Ethernet switching module Ethernet ports. Some unshielded twisted-pair (10BaseT) transceivers are compact enough to connect directly to the Ethernet module ports without impeding other connections. For descriptions of Ethernet transceivers, connectors, and cables, refer to the section "Ethernet Connection Equipment" in the chapter "Installation Overview."

Table C-2 lists the signals for the supervisor engine module 40-pin MII Fast Ethernet connector cable.


Table  C-2: Supervisor Engine Module 40-Pin MII Fast Ethernet Connector Signals
Pin Signal
1 +5V
2 MDIO
3 MDC
4 RxD<3>
5 RxD<2>
6 RxD<1>
7 RxD<0>
8 Rx_DV
9 Rx_Clk
10 Rx_Er
11 Tx_Er
12 Tx_Clk
13 Tx_En
14 TxD<0>
15 TxD<1>
16 TxD<2>
17 TxD<3>
18 Col
19 CRS
20 +5V
21 +5V
22 Common
23 Common
24 Common
25 Common
26 Common
27 Common
28 Common
29 Common
30 Common
31 Common
32 Common
33 Common
34 Common
35 Common
36 Common
37 Common
38 Common
39 Common
40 +5V

Table C-3 lists the signals for the supervisor engine module RJ-45 Fast Ethernet 100BaseTX MDI X port.


Table  C-3: Supervisor Engine Module 100BaseTX MDI X Port Signals
Pin Signal Direction Description
1 RxD+

<--

Receive data +
2 RxD-

<--

Receive data -
3 TxD+

-->

Transmit Data +
4 NC

No connection
5 NC

No connection
6 TxD-

-->

Transmit Data -
7 NC

No connection
8 NC

No connection

Table C-4 lists the signals for the Fast Ethernet switching module 100BaseTX 12 Port RJ-45 Fast Ethernet connector cable.

Table C-4 lists the RJ-45 connector port signals for the Fast Ethernet switching module 100BaseTX (12 port) and 10/100 Mbps Fast Ethernet switching module (12 port).


Table  C-4: Fast Ethernet Switching Module 100BaseT RJ-45 Port Signals
Signal Pin Direction Description
RxD+ 1

<--

Receive data +
RxD- 2

<--

Receive data -
TxD+ 3

-->

Transmit Data +
NC 4

No connection
NC 5

No connection
TxD- 6

-->

Transmit Data -
NC 7

No connection
NC 8

No connection

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