Filter
Top Products
1-4
PA-4T Synchronous Serial Port Adapter Installation and Configuration
OL-3560-02
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 1-2 lists LED colors and indications.
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.
Table 1-2 PA-4T LEDs
LED Label
DTE
Function
DCE
Function Color and Function
TD Transmit
data out
Transmit
data in
Green
TC Transmit
clock in
Transmit
clock in
(TXCE)
Green
RD Receive
data in
Receive
data out
Green
RC Receive
clock in
Receive
clock
out
Green
LB/CD – – Green: DTR, DSR, RTS, CTS, or DCD active
Yellow: local loop or internal loop active
EN (enable) – – Green: port adapter enabled