dsp56000 Freescale Semiconductor, Inc, dsp56000 Datasheet - Page 152
dsp56000
Manufacturer Part Number
dsp56000
Description
24-bit Digital Signal Processor Family Manual
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.DSP56000.pdf
(637 pages)
- Current page: 152 of 637
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i
ii
n = NORMAL INSTRUCTION WORD
FETCH
DECODE
EXECUTE
INSTRUCTION CYCLE COUNT
INTERRUPT CONTROL CYCLE 1
INTERRUPT CONTROL CYCLE 2
= INTERRUPT
= INTERRUPT INSTRUCTION WORD
INTERRUPT SYNCHRONIZED
ADDITIONAL INTERRUPTS
ADDITIONAL INTERRUPTS
ii = INTERRUPT INSTRUCTION
n = NORMAL INSTRUCTION
EXCEPTION PROCESSING STATE (INTERRUPT PROCESSING)
DISABLED DURING
DISABLED DURING
AND RECOGNIZED
FAST INTERRUPT
FAST INTERRUPT
INTERRUPTS
RE-ENABLED
INTERRUPTS
RE-ENABLED
AS PENDING
Figure 7-9 Two Consecutive Fast Interrupts
Freescale Semiconductor, Inc.
(a) Instruction Fetches from Memory
For More Information On This Product,
n1
1
(b) Program Controller Pipeline
i
INTERRUPT SYNCHRONIZED AND
RECOGNIZED AS PENDING
PROCESSING STATES
n2
n1
2
Go to: www.freescale.com
i
PROGRAM
MEMORY
ii1
n2
n1
MAIN
3
n1
n2
n3
n4
n5
n6
n7
n8
n9
6 I
cyc
n2
ii2
ii1
4
n3
ii2
ii1
5
FOUR INSTRUCTION
DECODES
n4
n3
ii2
6
n5
n4
n3
7
i
INTERRUPTS RE-ENABLED
n6
n5
n4
8
i
ii1
n6
n5
9
n6
10
ii2
ii1
ii1
ii2
ii1
ii2
MOTOROLA
ii2
ii1
11
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ii2
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