ISD94100 Series Technical Reference Manual
Sep 9, 2019
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Rev1.09
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Port A-D Interrupt Source Flag (Px_INTSRC)
Register
Offset
R/W Description
Reset Value
PA_INTSRC
0x020
R/W PA Interrupt Source Flag
0x0000_0000
PB_INTSRC
0x060
R/W PB Interrupt Source Flag
0x0000_0000
PC_INTSRC
0x0A0
R/W PC Interrupt Source Flag
0x0000_0000
PD_INTSRC
0x0E0
R/W PD Interrupt Source Flag
0x0000_0000
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
INTSRC
7
6
5
4
3
2
1
0
INTSRC
Bits
Description
[31:16]
Reserved
Reserved. Any values read should be ignored. When writing to this field always write with
reset value.
[n]
n=0,1..15
INTSRC[n]
Port A-D Pin[n] Interrupt Source Flag
Write Operation :
0 = No action.
1 = Clear the corresponding pending interrupt.
Read Operation :
0 = No interrupt at Px.n.
1 = Px.n generates an interrupt.
Note 1:
The reset value of PB_INTSRC[15:8] is 0XXX_00XXb in binary form.
Note 2:
Max. n=15 for port A/C/D
n=0..9, 13, 14, 15 for port B