Specifications

1260-14 User Manual
EADS North America Defense Module Specific Syntax 3-1
Test and Services, Inc. © 1992
Chapter 3
MODULE SPECIFIC SYNTAX
Asynchronous
and Synchronous
Modes of
Operation
Each port on the 1260-14 can operate in either an asynchronous
or a synchronous mode. The number of synchronous mode ports
may be modified using the SETUP SYNC command. The default
after power-up or reset is for all ports to be in the asynchronous
mode. The current operating mode of the ports may be
determined at any time with the PSETUP command. See the
syntax description of the PSETUP and SETUP SYNC commands
for details and examples.
Asynchronous
Mode
The asynchronous mode allows data to be read from or written to a
port in response to a READ or WRITE command. The following
restrictions apply to all asynchronous operations:
Those ports defined as asynchronous cannot participate in
synchronous operations.
Asynchronous commands are not allowed on any
port while
synchronous operations are armed and waiting for clocks.
Asynchronous WRITE commands are valid on synchronous write
ports to allow the port to be preset to a starting value.
Asynchronous READ commands are not allowed on synchronous
read ports.
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