Specifications

1260-14 User Manual
EADS North America Defense Module Specification 1-1
Test and Services, Inc. © 1992
Chapter 1
MODULE SPECIFICATION
General
The 1260-14 provides 96 TTL or CMOS compatible digital I/O lines
in twelve groups of 8 bits each. Each group of 8 bits (hereafter
referred to as a port), can be read from or written to
asynchronously using the commands READ and WRITE.
Additionally, up to 12 ports may be grouped together and
synchronously operated using an external clock for as many as
256 consecutive operations by using the appropriate SETUP
commands. The last data previously written to or read from a port
may be retrieved by using the PDATAOUT command. The current
state of the 1260-14 may be determined by using the PSETUP
command. Refer to the individual syntax descriptions for each
command, as well as the examples given later for the specifics
regarding these operations.
Two handshake lines are available for the synchronous I/O mode
of operation that can operate at a transfer rate of up to 1 kHz. See
Page 3-2 for a description of the synchronous mode handshake.
Tri-state control is provided for each port, and may be manipulated
by either hardware, software or both. The software tri-state control
will force all ports to tri-state following a power-on or reset. See
Page 3-4 for a description of the tri-state controls.
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