10. Interrupt Controller (INTC)
Rev.1.00 Jan. 10, 2008 Page 283 of 1658
REJ09B0261-0100
(4)
Interrupt Source Register (INTREQ)
INTREQ is a 32-bit readable and conditionally writable register that indicates which of the IRQ
[n] (n = 0 to 7) interrupts is currently asserting a request for the INTC.
Even if an interrupt is masked by the setting in INTPRI or INTMSK0, operation of the
corresponding INTREQ bit is not affected.
16
17
18
19
20
21
22
23
24
25
26
27
28
29
31
30
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
IR7
IR6
IR5
IR4
IR3
IR2
IR0
IR1
R
R
R
R
R
R
R
R
R/(W)
R/(W)
R/(W)
R/(W)
R/(W)
R/(W)
R/(W) R/(W)
Bit:
Initial value:
R/W:
0
1
2
3
4
5
6
7
8
9
10
11
12
13
15
14
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
Bit:
Initial value:
R/W:
Description
Bit Name
Initial
Value R/W
Edge Detection
(IRQnS = 00 or 01)
*
1
Level Detection
(IRQnS = 10 or 11)
*
1
31 IR0
0 R/(W)
30 IR1
0 R/(W)
29 IR2
0 R/(W)
28 IR3
0 R/(W)
27 IR4
0 R/(W)
26 IR5
0 R/(W)
25 IR6
0 R/(W)
24 IR7
0 R/(W)
[When read]
0: The corresponding IRQ
interrupt request has not
been detected.
1: The corresponding IRQ
interrupt request has been
detected.
[When written]
*
2
When clearing each bit, write a
0 after having read a 1 from it.
Writing 1 to the bit is ignored.
[When read]
(ICR0.LVLMODE = 0)
0: The corresponding interrupt
source has not been
detected.
1: The corresponding interrupt
source has been detected.
[When read]
(ICR0.LVLMODE = 1)
0: The corresponding IRQ
interrupt pin is not asserted.
1: The corresponding IRQ
interrupt pin is asserted, but
the CPU has not accepted
the interrupt request yet.
Writing have no effect.
*
3
23 to 0
⎯
All
0
R Reserved
These bits are always read as 0. The write value should always
be 0.
Notes: 1. n = 0 to 7
2. Write 1 to the bit if it should not be cleared yet.
3. For the method of clearing the IRQ interrupt request that has been detected by level
sensing, refer to section 10.7.3, Clearing IRQ and IRL Interrupt Requests.
Содержание SH7781
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Страница 272: ...8 Caches Rev 1 00 Jan 10 2008 Page 242 of 1658 REJ09B0261 0100 ...
Страница 376: ...10 Interrupt Controller INTC Rev 1 00 Jan 10 2008 Page 346 of 1658 REJ09B0261 0100 ...
Страница 694: ...13 PCI Controller PCIC Rev 1 00 Jan 10 2008 Page 664 of 1658 REJ09B0261 0100 ...
Страница 762: ...14 Direct Memory Access Controller DMAC Rev 1 00 Jan 10 2008 Page 732 of 1658 REJ09B0261 0100 ...
Страница 788: ...15 Clock Pulse Generator CPG Rev 1 00 Jan 10 2008 Page 758 of 1658 REJ09B0261 0100 ...
Страница 828: ...17 Power Down Mode Rev 1 00 Jan 10 2008 Page 798 of 1658 REJ09B0261 0100 ...
Страница 846: ...18 Timer Unit TMU Rev 1 00 Jan 10 2008 Page 816 of 1658 REJ09B0261 0100 ...
Страница 1292: ...24 Multimedia Card Interface MMCIF Rev 1 00 Jan 10 2008 Page 1262 of 1658 REJ09B0261 0100 ...
Страница 1326: ...25 Audio Codec Interface HAC Rev 1 00 Jan 10 2008 Page 1296 of 1658 REJ09B0261 0100 ...
Страница 1482: ...28 General Purpose I O Ports GPIO Rev 1 00 Jan 10 2008 Page 1452 of 1658 REJ09B0261 0100 ...
Страница 1538: ...30 User Debugging Interface H UDI Rev 1 00 Jan 10 2008 Page 1508 of 1658 REJ09B0261 0100 ...
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