AAEON PCM-QM77 - Manual (Page 167)

C o m p a c t B o a r d P C M - Q M 7 7
Appendix E Digital I/O F-4
4
GP24_ODA
TA
R/W VSB3V GPIO 24 output data.
3
GP23_ODA
TA
R/W VSB3V GPIO 23 output data.
2
GP22_ODA
TA
R/W VSB3V GPIO 22 output data.
1
GP21_ODA
TA
R/W VSB3V GPIO 21 output data.
0
GP20_ODA
TA
R/W VSB3V GPIO 20 output data.
GPIO2x Input Status Register-Index 22h
Power-on default [7:0]=xxxx_xxxxb
Bit Name R/W PWR Description
7
GP27_PST
S
RO VSB3V Read the GPIO27 data on the pin.
6
GP26_PST
S
RO VSB3V Read the GPIO26 data on the pin.
5
GP25_PST
S
RO VSB3V Read the GPIO25 data on the pin.
4
GP24_PST
S
RO VSB3V Read the GPIO24 data on the pin.
3
GP23_PST
S
RO VSB3V Read the GPIO23 data on the pin.
2
GP22_PST
S
RO VSB3V Read the GPIO22 data on the pin.
1
GP21_PST
S
RO VSB3V Read the GPIO21 data on the pin.
0
GP20_PST
S
RO VSB3V Read the GPIO20 data on the pin.
The following is a sample code for 8 input
.MODEL SMALL
.CODE