Cisco Systems OL-3560-02 Cables, Connectors, and Pinouts, LED Label Function Color and Function

Chapter 1 Overview

Cables, Connectors, and Pinouts

The green enabled LED on the port adapter indicates that the motherboard is enabled and receiving power, and that the port adapter is ready for operation.

The following conditions must be met before the enabled LED goes on:

•The PA-4T interface is correctly connected and receiving power

•The PA-4T-equipped card or router contains a valid microcode version that has been downloaded successfully

•The bus recognizes the PA-4T or PA-4T-equipped VIP

If any of these conditions is not met, or if the initialization fails for other reasons, the enabled LED does not go on.

Table 1-2lists LED colors and indications.

Table 1-2	PA-4T LEDs
	DTE	DCE
LED Label	Function	Function	Color and Function
TD	Transmit	Transmit	Green
	data out	data in
TC	Transmit	Transmit	Green
	clock in	clock in
		(TXCE)
RD	Receive	Receive	Green
	data in	data out
RC	Receive	Receive	Green
	clock in	clock
		out
LB/CD	–	–	Green: DTR, DSR, RTS, CTS, or DCD active
			Yellow: local loop or internal loop active
EN (enable)	–	–	Green: port adapter enabled

Cables, Connectors, and Pinouts

The following sections describe the serial receptacles on the PA-4T, and the cables and pinouts for the various serial interface cables.

PA-4T Port Adapter Receptacles and Cables

The PA-4T and adapter cables allow a high density of interface ports, regardless of the size of the connectors typically used with each electrical interface type. All ports use an identical 60-pin, D-shell receptacle that supports all interface types: EIA/TIA-232, V.35, EIA/TIA-449, X.21, and EIA-530. Each port requires a serial adapter cable, which provides the interface between the high-density serial port and the standard connectors that are commonly used for each electrical interface type.

Note The adapter cable determines the electrical interface type and mode of the port (DTE or DCE) to which it is connected.

PA-4T Synchronous Serial Port Adapter Installation and Configuration

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