Setup Sync Command - Racal Instruments 1260-14C Manual

SETUP SYNC
command
Module Specific Syntax 3-16
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Assume that port 0 is a synchronous port and the user sends the
following command:
SETUP 1.RD 0,X5,X7,X1,10
This command would cause the module to perform a bit-wide read
of bits 5, 7 and 1 for ten vector on port 0 during the next
synchronous test.
Syntax: SE[TUP] <address> .SY[NC],<number of ports>
<address>::= Module address of the 1260-14C (1-
12)
<number of ports>::= Number of ports to make
synchronous (0-12)
Description: This command specifies the number of ports that
will have the synchronous mode enabled. Note that the user may
not specify which ports are synchronous and which are
asynchronous. Instead, the synchronous ports are always
grouped together starting at port 0; i.e., the first synchronous port
is always port 0; the second is always port 1, etc.
Example:
Assume the user sends the following command:
SETUP 1.SYNC,5
This would cause the digital I/O card with the module address of 1
to define the 5 ports from port 0 to port 4 as synchronous ports.
The remaining 7 ports from port 5 to port 11 would become
asynchronous.
On power-up, the synchronous mode is disabled for all ports.
When the SYNC command is given, those ports that change
configuration from asynchronous to synchronous, or vice versa,
are re-initialized. This causes any old format, mode, or read/write
data to be removed. Consequently, all new synchronous ports
should be programmed with a SETUP <address>.RD or SETUP
<address>.WR command before they are used in synchronous
operations.
Only those ports defined as synchronous may perform data
transfers utilizing the CLKIN and BUSY handshake lines.
The asynchronous WRITE command will work normally on a
synchronous port, but the READ command will not. This allows
User Manual 1260-14C