Rainbow Electronics W90P710CDG User Manual
Page 422
W90P710CD/W90P710CDG
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Continued
BITS
DESCRIPTION
[3]
EnINT4
Enable INT4
Setting this bit 1 to enable extend interrupt 4
1 = Enable interrupt 4
0 = Disable interrupt 4
The AIC interrupt channel 31 is reserved for interrupt 5 and 4 (wire-OR), if
this bit is set and interrupt 4 occur, then it will send an interrupt request
signal into AIC module.
[2]
DBE4
Debounce circuit enable for INT4
(alternative function of GPIO0 pin)
1 = Enable debounce
0 = Disable debounce
Extend interrupt 4 shares the same debounce circuit with nIRQ[3:0],
software can configure debounce sampling time in GPIO_DEBNCE control
register. DBE5 function is the same as DBE0 in GPIO_DBENCE register.
[1:0]
ISTYPE4
Interrupt 4 source type
ISTYPE5
Interrupt Source Type
2’b00
LOW level sensitive
2’b01
HIGH level sensitive
2’b10
Negative edge triggered
2’b11
Positive edge triggered
GPIO Interrupt Status Register (GPIO_XISTATUS)
REGISTER ADDRESS
R/W
DESCRIPTION
RESET
VALUE
GPIO_XISTATUS 0xFFF8_3078 R/W Extend interrupt status (flag)
register
0xXXXX_XX00
31
30
29
28
27
26
25
24
RESERVED
23
22
21
20
19
18
17
16
RESERVED
15
14
13
12
11
10
9
8
RESERVED
7
6
5
4
3
2
1
0
RESERVED INT5
INT4