Motorola CPU32 Reference Manual page 300

CPU ACTIVITY DEVELOPMENT SYSTEM ACTIVITY
ENTERBDM
• ASSERT FREEZE SIGNAL
• WAIT FOR COMMAND
SEND INITIAL COMMAND
• LOAD COMMAND REGISTER
• ENABLE SHIFT CLOCK
• SHIFT OUT 17 BITS
• DISABLE SHIFT CLOCK
EXECUTE COMMAND
• LOAD: NOT READY/ RESPONSE
• PERFORM COMMAND
• STORE RESULTS
READ RESULTSINEW COMMAND
• LOAD COMMAND REGISTER
• ENABLE SHIFT CLOCK
• SHIFT IN/OUT 17 BITS
• DISABLE SHIFT CLOCK
• READ RESULT REGISTER
YES
CONTINUE
Figure 7-4. 80M Command Execution Flowchart
CPU32 REFERENCE MANUAL
DEVELOPMENT SUPPORT
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