Stop Instruction Sequence Recovering With Reset - Motorola DSP56000 Manual

RESET
INTERRUPT CONTROL CYCLE 1
INTERRUPT CONTROL CYCLE 2
FETCH
DECODE
EXECUTE
STOP CYCLE COUNT
= INTERRUPT
IRESET
n = NORMAL INSTRUCTION WORD
nA, nB, nC = INSTRUCTIONS IN RESET ROUTINE
STOP = INTERRUPT INSTRUCTION WORD
Figure 7-19 STOP Instruction Sequence Recovering with RESET
7 - 42
STOP PROCESSING STATE
PROCESSOR ENTERS
RESET STATE
n3 n4 — —
n2 STOP — —
n1 n2 STOP —
1 2 3 4
CLOCK STOPPED
PROCESSING STATES
PROCESSOR LEAVES RESET STATE
nop nA nB nC
nop nop nA nB
nop nop nop nA
MOTOROLA
nD nE
nC nD
nB nC