Section 10 Interrupt Controller (INTC)
Rev.1.00 Dec. 13, 2005 Page 255 of 1286
REJ09B0158-0100
10.3.1 Interrupt
Control Register 0 (ICR0)
ICR0 is a 32-bit readable and partially writable register that sets the input signal detection mode
for the external interrupt input pins (IRQ/IRL [7:0]) and NMI pin, and indicates the level being
input on the NMI pin.
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
IRLM1
IRLM0
NMIE
NMIB
NMIL
MAI
R
R
R
R
R
R
R/W
R/W
R/W
R/W
R
R
R
R
R
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:
Bit Name
Initial
Value R/W
Description
31
NMIL
Undefined R
NMI Input Level
Indicates the signal level being input on the NMI pin.
Reading this bit allows the user to know the NMI pin
level, and writing is invalid.
0: Low level is being input on the NMI pin
1: High level is being input on the NMI pin
Note: The initial value of this bit depends on the level
initially being input on the NMI pin.
30
MAI
0
R/W
MAI (mask all interrupts) Interrupt Mask
Specifies whether all interrupts are masked while the
NMI pin is at the low level regardless of the setting of
the BL bit in SR of the CPU.
0: Interrupts remain enabled even when the NMI pin
goes low
1: Interrupts are disabled when the NMI pin goes low
29 to 26
All
0
R
Reserved
These bits are always read as 0. The write value
should always be 0.
Содержание SH7780 Series
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Страница 450: ...Section 11 Local Bus State Controller LBSC Rev 1 00 Dec 13 2005 Page 400 of 1286 REJ09B0158 0100 ...
Страница 492: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Dec 13 2005 Page 442 of 1286 REJ09B0158 0100 ...
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Страница 726: ...Section 18 Timer Unit TMU Rev 1 00 Dec 13 2005 Page 676 of 1286 REJ09B0158 0100 ...
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Страница 1104: ...Section 27 NAND Flash Memory Controller FLCTL Rev 1 00 Dec 13 2005 Page 1054 of 1286 REJ09B0158 0100 ...
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Страница 1266: ...Section 31 Electrical Characteristics Rev 1 00 Dec 13 2005 Page 1216 of 1286 REJ09B0158 0100 ...
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