Freescale-semiconductor ColdFire MCF52210 Manual de usuario Pagina 551

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IEEE 1149.1 Test Access Port (JTAG)
MCF52211 ColdFire® Integrated Microcontroller Reference Manual, Rev. 2
Freescale Semiconductor 29-7
Figure 29-4. TAP Controller State Machine Flow
29.4.3 JTAG Instructions
Table 29-5 describes public and private instructions.
Table 29-5. JTAG Instructions
Instruction IR[3:0] Instruction Summary
EXTEST 0000 Selects boundary scan register while applying fixed values to output pins and
asserting functional reset
IDCODE 0001 Selects IDCODE register for shift
SAMPLE/PRELOAD 0010 Selects boundary scan register for shifting, sampling, and preloading without
disturbing functional operation
ENABLE_TEST_CTRL 0110 Selects TEST_CTRL register
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