F81867
0: GPIO20 outputs 0 when in output mode.
1: GPIO20 outputs 1 when in output mode.
0
GPIO20_VAL
R/W 5VSB
1
GPIO2 Pin Status Register ⎯ Index D2h (This byte could be also read by base address + 8 if
GPIO_DEC_RANGE is set to “1”)
Bit
7
Name
R/W Reset Default
Description
The pin status of RSMRST#/GPIO27.
GPIO27_IN
GPIO26_IN
GPIO25_IN
GPIO24_IN
GPIO23_IN
GPIO22_IN
GPIO21_IN
GPIO20_IN
R
R
R
R
R
R
R
R
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
6
The pin status of PWOK/GPIO26.
5
The pin status of PS_ON#/GPIO25.
The pin status of S3#/GPIO24.
4
3
The pin status of PWSOUT#/GPIO23.
The pin status of PWSIN#/GPIO22.
The pin status of ATXPG_IN#/GPIO21.
The pin status of ALERT#/GPIO20/SCL/CIRRX#.
2
1
0
GPIO2 Drive Enable Register ⎯ Index D3h
Name R/W Reset Default
Bit
Description
0: GPIO27 is open drain in output mode.
1: GPIO27 is push pull in output mode.
7
GPIO27_DRV_EN R/W 5VSB
GPIO26_DRV_EN R/W 5VSB
GPIO25_DRV_EN R/W 5VSB
GPIO24_DRV_EN R/W 5VSB
GPIO23_DRV_EN R/W 5VSB
GPIO22_DRV_EN R/W 5VSB
GPIO21_DRV_EN R/W 5VSB
GPIO20_DRV_EN R/W 5VSB
0
0
0
0
0
0
0
0
0: GPIO26 is open drain in output mode.
1: GPIO26 is push pull in output mode.
6
5
4
3
2
1
0
0: GPIO25 is open drain in output mode.
1: GPIO25 is push pull in output mode.
0: GPIO24 is open drain in output mode.
1: GPIO24 is push pull in output mode.
0: GPIO23 is open drain in output mode.
1: GPIO23 is push pull in output mode.
0: GPIO22 is open drain in output mode.
1: GPIO22 is push pull in output mode.
0: GPIO21 is open drain in output mode.
1: GPIO21 is push pull in output mode.
0: GPIO20 is open drain in output mode.
1: GPIO20 is push pull in output mode.
7.7.7
GPIO3x Configuration Registers
Register Name
Register
0x[HEX]
Default Value
MSB
LSB
C0
GPIO3 Output Enable Register
GPIO3 Output Data Register
GPIO3 Pin Status Register
GPIO3 Drive Enable Register
0
0
1
-
0
1
-
0
1
-
0
1
-
0
0
1
-
0
1
-
C1
C2
C3
1
-
1
-
0
0
0
0
0
0
0
0
155
Dec, 2011
V0.12P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
