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Scan IF Operation
24-25Scan IF
If the PSM is in state 01 of the simplest state machine and the PSM has loaded
the corresponding byte at index 01h of the state table:
Q7 Q6 Q5 Q4 Q3 Q2 Q1 Q0
0 0 0 0 0 0 0 0
For this example, S1 and S2 are set at the end of the next TSM sequence. To
calculate the next state the bits Q5 - Q3 and Q0 of the state 01 table entry,
together with the S1 and S2 signals are combined to form the next state:
Q7 Q6 Q5 Q4 Q3 Q0 S2 S1
0 0 0 0 0 0 1 1
The state table entry for state 11 is loaded at the next state transition:
Q7 Q6 Q5 Q4 Q3 Q2 Q1 Q0
0 0 0 0 0 0 1 0
Q1 is set In state 11, so SIFCNT1 will be incremented.
More complex state machines can be built by combining simple state
machines to meet the requirements of specific applications.