CX82100 Home Network Processor Data Sheet
9.3.15
GPIO Interrupt Enable Register 2 for GPIO[31; 27:24; 22:16] (GPIO_IER2:
0x003500E8)
GPIO_IER2 is the interrupt input enable register for GPIO[31:16]. Note that if an
interrupt input is enabled for GPIO[X], then GPIO[X] must be configured as an input.
Bit(s)
31:16;
31≥Y≥16,
Y = Bit #
Type
RO
Default
Name
Description
GPIO[X] Interrupt Enable Mask, 31≥X≥16.
See specific GPIO_IEMSK{X},
bit
31≥X≥16,
Reading:
X = Y.
Return 0.
Writing:
0 to bit #Y = > Mask off the function associated with GPIO_IE{X}.
1 to bit #Y = > Enable the function associated with GPIO_IE{X}.
GPIO[X] Interrupt Enable, 31≥X≥16.
Reading:
15:0;
15≥Y≥0,
Y = Bit #
RW
See specific GPIO_IE{X},
bit
31≥X≥16,
X = Y+16.
Return the last value written to bit #Y.
Writing:
0 to bit #Y = > Disable the GPIO[X] interrupt if GPIO_IEMSK{X} =
1; don't care, otherwise.
1 to bit #Y = > Enable the GPIO[X] interrupt if GPIO_IEMSK{X} =
1; don't care, otherwise.
Bit(s)
31
30:28
27
26
25
24
23
22
21
20
19
18
17
16
15
14:12
11
10
9
Type
Default
Name
Description
GPIO31 Interrupt Enable Mask.
Reserved.
GPIO27 Interrupt Enable Mask.
GPIO26 Interrupt Enable Mask.
GPIO25 Interrupt Enable Mask.
GPIO24 Interrupt Enable Mask.
Reserved.
GPIO22 Interrupt Enable Mask.
GPIO21 Interrupt Enable Mask.
GPIO20 Interrupt Enable Mask.
GPIO19 Interrupt Enable Mask.
GPIO18 Interrupt Enable Mask.
GPIO17 Interrupt Enable Mask.
GPIO16 Interrupt Enable Mask.
GPIO31 Interrupt Enable.
Reserved.
GPIO27 Interrupt Enable.
GPIO26 Interrupt Enable.
GPIO25 Interrupt Enable.
GPIO24 Interrupt Enable.
Reserved.
RO
1’b0
GPIO_IEMSK31
RO
RO
RO
RO
1’b0
1’b0
1’b0
1’b0
GPIO_IEMSK27
GPIO_IEMSK26
GPIO_IEMSK25
GPIO_IEMSK24
RO
RO
RO
RO
RO
RO
RO
RO
1’b0
1’b0
1’b0
1’b0
1’b0
1’b0
1’b0
1’b0
GPIO_IEMSK22
GPIO_IEMSK21
GPIO_IEMSK20
GPIO_IEMSK19
GPIO_IEMSK18
GPIO_IEMSK17
GPIO_IEMSK16
GPIO_IE31
RW
RW
RW
RW
1’b0
1’b0
1’b0
1’b0
GPIO_IE27
GPIO_IE26
GPIO_IE25
GPIO_IE24
8
7
6
5
4
3
2
1
0
RW
RW
RW
RW
RW
RW
RW
1’b0
1’b0
1’b0
1’b0
1’b0
1’b0
1’b0
GPIO_IE22
GPIO_IE21
GPIO_IE20
GPIO_IE19
GPIO_IE18
GPIO_IE17
GPIO_IE16
GPIO22 Interrupt Enable.
GPIO21 Interrupt Enable.
GPIO20 Interrupt Enable.
GPIO19 Interrupt Enable.
GPIO18 Interrupt Enable.
GPIO17 Interrupt Enable.
GPIO16 Interrupt Enable.
9-14
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