Specifications

1260-14 User Manual

EADS North America Defense Module Specific Syntax 3-17

Read operations may be performed as either bit, byte or word

width operations, with byte width being the default. Data will be

formatted in either decimal, hexadecimal or binary, with the default

being decimal. The width and format of the output are specified as

follows:

A "B" specifies that the output format for the data is binary.

An "H" specifies that the output format for the data is hexadecimal.

A "Y" specifies a byte-wide (8-bit) read of the port. If the port was

previously read using a word width, the data associated with the

companion port is cleared, and the port will be disabled in future

synchronous operations until redefined. This is the default if no

width is specified. See Example 1 above for a sample of a byte-

wide synchronous read setup.

A "W" specifies a word-wide (16 bits) read of a pair of ports. Word-

wide operations are specified on even-numbered ports only, and

read the least significant 8 bits from the even port and the most

significant 8 bits from the following odd-numbered port. Word-

sized operations may not be mixed with bit or byte operations in

either the even or odd port. If either the even or the odd port is

redefined as a byte-wide or a bit-wide port, the matching odd or

even companion port is disabled and should be redefined before

the next test.

Example 2:

Assume that ports 0-3 are synchronous ports, ports 2 and 3 were

previously defined as synchronous word-wide read ports and the

user sends the following commands:

SETUP 1.RD 0,W,5

SETUP 1.RD 2,Y,7

The first command would cause the module to perform a word-

wide read of five vectors worth of data from ports 0 and 1 during

the next synchronous test. The second command would cause a

byte-wide read of 7 vectors worth of data from port 2 during the

next synchronous test, and would disable port 3 from participating

in subsequent tests until redefined.

An "X" specifies a bit-wide read of the port. Any combination of the

8 bits from X0-X7 may be specified, but only the selected bits are

stored when the user runs the synchronous test. The buffer will

contain the status of the bits requested at each vector in the same

order as specified in the command. If the port was previously read

using a word width, the data associated with the companion port

will be cleared, and the port will be disabled in future synchronous

operations until redefined.

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