ISD91200 Series Technical Reference Manual
Release Date: Sep 16, 2019
- 139 -
Revision 2.4
GPIO Port [A/B] Data Output Write Mask (Px _DATMSK)
Register
Offset
R/W
Description
Reset Value
PA_DATMSK
0x00C R/W
GPIO Port A Data Output Write Mask
0xXXXX_0000
PB_DATMSK
0x04C R/W
GPIO Port B Data Output Write Mask
0xXXXX_0000
Table 5-52 GPIO Data Output Write Mask Register (Px_DATMSK)
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
DATMSK[15:8]
7
6
5
4
3
2
1
0
DATMSK[7:0]
Bits
Description
[31:16]
Reserved
Reserved.
[15:0]
DATMSK
Port [A/B] Data Output Write Mask
These bits are used to protect the corresponding register of Px_DOUT bit[n] . When
set the DATMSK bit[n] to “1”, the corresponding DOUTn bit is writing protected.
0 = The corresponding Px_DOUT[n] bit can be updated.
1 = The corresponding Px_DOUT[n] bit is read only.
