W90P710_05 Datasheet, PDF (413/526 Pages) Winbond – 16/32-bit ARM microcontroller

W90P710
Continued
BITS
[3]
EnINT4
[2]
DBE4
[1:0]
ISTYPE4
DESCRIPTION
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.
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.
Interrupt 4 source type
ISTYPE5
2’b00
2’b01
2’b10
2’b11
Interrupt Source Type
LOW level sensitive
HIGH level sensitive
Negative edge triggered
Positive edge triggered
GPIO Interrupt Status Register (GPIO_XISTATUS)
REGISTER
GPIO_XISTATUS
ADDRESS
0xFFF8_3078
R/W
R/W
DESCRIPTION
RESET VALUE
Extend interrupt status (flag) 0xXXXX_XX00
register
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
- 413 -
Publication Release Date: January 17, 2005
Revision A.2