Mask Function

TM 11-7010-201-1/ETS21-AA-MMI11O/E154 MTS/T 0 31SS2TSQ73-2-1

2-9. Mask Function. The mask function (see figure 2-4) consists of the I/O mask, gross card type decoder logic, sliding

circuit mask, and unused pin mask. The mask function i8 addressed by the binary coded card ID signal from the timing

and control function, or the dummy binary coded card ID from the self-test function. The mask function is activated at

state 7 time by the state 7 command (perforn functional test). Internal timing is provided by the functional test timing

signal.

Figure 2-4. Mask Function Block Diagram

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