Maxim Integrated DS21Q55 - Manual (Page 202)

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TAP CONTROLLER STATE DIAGRAM Figure 34-2
1
0
0
1
1 1
1
1
1
1 1
1 1
1 1
0 0
0 0
0
1
0 0
0 0
1 1
0 0
0 0
Select
DR-Scan
Capture DR
Shift DR
Exit DR
Pause DR
Exit2 DR
Update DR
Select
IR-Scan
Capture IR
Shift IR
Exit IR
Pause IR
Exit2 IR
Update IR
Test Logic
Reset
Run Test/
Idle
0