dsp56000 Freescale Semiconductor, Inc, dsp56000 Datasheet - Page 151

• Manufacturer Part Number: dsp56000
• Description: 24-bit Digital Signal Processor Family Manual
• Manufacturer: Freescale Semiconductor, Inc

MOTOROLA
i
ii
n = NORMAL INSTRUCTION WORD
= INTERRUPT
= INTERRUPT INSTRUCTION WORD
INTERRUPT SYNCHRONIZED
ADDITIONAL INTERRUPTS
ii = INTERRUPT INSTRUCTION
n = NORMAL INSTRUCTION
FETCH
DECODE
EXECUTE
INSTRUCTION CYCLE COUNT
INTERRUPT CONTROL CYCLE 1
INTERRUPT CONTROL CYCLE 2
EXCEPTION PROCESSING STATE (INTERRUPT PROCESSING)
DISABLED DURING
AND RECOGNIZED
FAST INTERRUPT
INTERRUPTS
RE-ENABLED
AS PENDING
Figure 7-8 Fast Interrupt Service Routine
Freescale Semiconductor, Inc.
(a) Instruction Fetches from Memory
For More Information On This Product,
(b) Program Controller Pipeline
PROCESSING STATES
Go to: www.freescale.com
PROGRAM
MEMORY
n1
1
i
MAIN
INTERRUPT SYNCHRONIZED AND
n1
n2
n3
n4
RECOGNIZED AS PENDING
n2
n1
2
i
n2
n1
ii1
3
n2
ii2
ii1
4
n3
ii2
ii1
5
n4
n3
ii2
6
n4
n3
7
INTERRUPTS RE-ENABLED
n4
8
ii1
ii2
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