Figure 15-2. Tap Controller State Diagram - Intel i960 Jx Developer's Manual

TEST FEATURES
1
TRST
0
TEST - LOGIC -
1
RESET
0
1
RUN - TEST /
0
IDLE
NOTE: ALL STATE TRANSITIONS ARE BASED ON THE VALUE OF TMS.

Figure 15-2. TAP Controller State Diagram

15-4
1
SELECT-
DR - SCAN
0
1
CAPTURE - DR
0
0
SHIFT - DR
1
1
EXIT1 - DR
0
PAUSE - DR
0
1
0
EXIT2 - DR
1
UPDATE - DR
1
0
1
SELECT-
IR - SCAN
0
1
CAPTURE - IR
0
0
SHIFT - IR
1
1
EXIT1 - IR
0
0
PAUSE - IR
1
0
EXIT2 - IR
1
UPDATE - IR
1 0