ISD91200 Series Technical Reference Manual
Release Date: Sep 16, 2019
- 136 -
Revision 2.4
5.4.4
Register Description
GPIO Port [A/B] I/O Mode Control (Px_MODE)
Register
Offset
R/W
Description
Reset Value
PA_MODE
0x000 R/W
GPIO Port A Pin I/O Mode Control
0xFFFF_FFFF
PB_MODE
0x040 R/W
GPIO Port B Pin I/O Mode Control
0xFFFF_FFFF
Table 5-49 GPIO Mode Control Register
31
30
29
28
27
26
25
24
MODE15
MODE14
MODE13
MODE12
23
22
21
20
19
18
17
16
MODE11
MODE10
MODE9
MODE8
15
14
13
12
11
10
9
8
MODE7
MODE6
MODE5
MODE4
7
6
5
4
3
2
1
0
MODE3
MODE2
MODE1
MODE0
Bits
Description
[2n+1 :2n]
n=0,1..15
MODEn
Px I/O Pin[n] Mode Control
Determine each I/O type of GPIOx pins
00 = GPIO port [n] pin is in INPUT mode.
01 = GPIO port [n] pin is in OUTPUT mode.
10 = GPIO port [n] pin is in Open-Drain mode.
11 = GPIO port [n] pin is in Quasi-bidirectional mode.