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S3C2500B
31
IOPEXTINT
Reserved
Figure 15-5. I/O Port Control Register for External Interrupt (IOPEXTINT)
23
22
21
20
19
24
X
X
X
X
X
[23:20] Control external interrupt request5 input for port 13 (xINT5)
[23] 0 = active low
[22] 0 = filtering off
[21:20] 00 = level detection
01 = rising edge detection
10 = falling edge detection
[19:16] Control external interrupt request4 input for port 12 (xINT4)
[19] 0 = active low
[18] 0 = filtering off
[17:16] 00 = level detection
01 = rising edge detection
10 = falling edge detection
[15:12] Control external interrupt request3 input for port 11 (xINT3)
[15] 0 = active low
[14] 0 = filtering off
[13:12] 00 = level detection
01 = rising edge detection
10 = falling edge detection
[11:8] Control external interrupt request2 input for port 10 (xINT2)
[11] 0 = active low
[10] 0 = filtering off
[9:8] 00 = level detection
01 = rising edge detection
10 = falling edge detection
[7:4] Control external interrupt request1 input for port 9 (xINT1)
[7] 0 = active low
[6] 0 = filtering off
[5:4] 00 = level detection
01 = rising edge detection
10 = falling edge detection
[3:0] Control external interrupt request0 input for port 8 (xINT0)
[3] 0 = active low
[2] 0 = filtering off
[1:0] 00 = level detection
01 = rising edge detection
10 = falling edge detection
14
13
12
11
18
17
16
15
X
X
X
X
X
X
X
X
1 = active high
1 = filtering on
1 = active high
1 = filtering on
1 = active high
1 = filtering on
1 = active high
1 = filtering on
1 = active high
1 = filtering on
1 = active high
1 = filtering on
10
9
8
7
6
5
4
3
X
X
X
X
X
X
X
X
I/O PORTS
2
1
0
X
X
X
15-9
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