dsp56800e Freescale Semiconductor, Inc, dsp56800e Datasheet - Page 295
![no-image](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_sml.jpg)
dsp56800e
Manufacturer Part Number
dsp56800e
Description
16-bit Digital Signal Controller Core
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.DSP56800E.pdf
(706 pages)
- Current page: 295 of 706
- Download datasheet (4Mb)
Freescale Semiconductor
i = Interrupt Arbitration and Request
ii = Interrupt instruction word
n = Normal instruction word
Pipeline
Int Arbitr
Int Req
Stage
OP2
EX2
AG
EX
P1
P2
ID
IF
n1 n2 n3 n4 ii0 ii1 ii2 ii3 ii4 ii5
1
n1 n2 n3 n4 ii0 ii1 ii2 ii3 ii4
2
n1 n2 n3 n4 ii0 ii1 ii2 ii3
3
i
Interrupt
Handler
Level 2
FRTID
Figure 10-6. Interrupting a Fast Interrupt Routine
dly0
dly1
ii4
ii5
ii6
ii7
ii8
n1 — — — ii0 ii1 ii2
4
Level 2 Interrupt Request Sampled
i
n1 — — — ii0 ii1
5
n1 — — — ii0
6
by the Arbiter
n1 — — —
7
n1 — —
(b) Interrupt Pipeline
8
(a) Instruction Flow
Instruction Pipeline
(RTI or RTID)
Return From
9 10 11
Interrupt
Explicit
Jump Address
Vector Table
Interrupt
Instruction Cycle
JSR
ii6
ii5
ii4
ii3
ii2
ii1
ii0
—
12
ii7
ii6
ii5
ii4
ii3
ii2
ii1
ii0
13
ii8
ii7
ii6
ii5
ii4
ii3
ii2
ii1
i
Pipeline During Interrupt Processing
14
ii9
ii8
ii7
ii6
ii5
ii4
ii3
ii2
Level 3 Interrupt Request
i
Sampled by the Arbiter
Level 3 Interrupt
15
ii0
ii9
ii8
—
ii6
ii5
ii4
ii3
Subroutine
Interrupt
Routine
RTI
16
ii2
ii3
ii4
iin
ii1
ii0
ii9
—
—
ii6
ii5
ii4
17
ii2
ii1
ii0
—
—
—
ii6
ii5
18
ii2
ii1
ii0
—
—
—
ii6
•
PC Resumes
Operation
19 20 21
ii2
ii1
ii0
—
—
—
•
•
ii2
ii1
ii0
—
—
•
•
•
ii2
ii1
ii0
—
•
•
•
•
10-15
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