Abov MC97F60128 - PB Port; PB Port Description; Register Description for PB

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MC97F60128
ABOV Semiconductor Co., Ltd.
9.14 PB Port
9.14.1 PB Port Description
PB is 3-bit I/O port. PB control registers consist of PB data register (PB), PB direction register (PBIO), PB pull-up
resistor selection register (PBPU) and PB open-drain selection register (PBOD). Refer to the port function selection
registers for the PB function selection.
9.14.2 Register description for PB
PB (PB Data Register): A4H
7
6
5
4
3
2
1
0
–
–
–
–
–
PB2
PB1
PB0
–
–
–
–
–
R/W
R/W
R/W
Initial value: 00H
PB[2:0]
I/O Data
PBIO (PB Direction Register): E9H
7
6
5
4
3
2
1
0
–
–
–
–
–
PB2IO
PB1IO
PB0IO
–
–
–
–
–
R/W
R/W
R/W
Initial value: 00H
PBIO[2:0]
PB Data I/O Direction.
0
Input
1
Output
PBPU (PB Pull-up Resistor Selection Register): B6H
7
6
5
4
3
2
1
0
–
–
–
–
–
PB2PU
PB1PU
PB0PU
–
–
–
–
–
R/W
R/W
R/W
Initial value: 00H
PBPU[2:0]
Configure Pull-up Resistor of PB Port
0
Disable
1
Enable
PBOD (PB Open-drain Selection Register): 401BH (XSFR)
7
6
5
4
3
2
1
0
–
–
–
–
–
PB2OD
PB1OD
PB0OD
–
–
–
–
–
R/W
R/W
R/W
Initial value: 00H
PBOD[2:0]
Configure Open-drain of PB Port
0
Push-pull output
1
Open-drain output