Freescale Semiconductor MCF5480 - Manual (Page 715)

Functional Description
MCF548x Reference Manual, Rev. 3
Freescale Semiconductor 23-7
Figure 23-3. TAP Controller State Machine Flow
23.4.3 JTAG Instructions
Table 23-5 describes public and private instructions.
F Table 23-5. JTAG Instructions
Instructio
n
IR[5:0] Instruction Summary
EXTEST 000000 Selects boundary scan register while applying fixed values to output
pins and asserting functional reset
SAMPLE 000001 Selects boundary scan register for shifting, sampling, and preloading
without disturbing functional operation
IDCODE 011101 Selects IDCODE register for shift
RUN-TEST/IDLE
TEST-LOGIC-RESET
1
1
SELECT DR-SCAN
CAPTURE-DR
EXIT1-DR
PAUSE-DR
UPDATE-DR
SELECT IR-SCAN
SHIFT-DR
EXIT2-DR
CAPTURE-IR
SHIFT-IR
EXIT1-IR
PAUSE-IR
EXIT2-IR
UPDATE-IR
0
0
1
1
0
0
0
1
1
1 0
0
0
1
1
0
0
1
1
0
1
0
1
1 0
1
1
0
0
1
0