Global American 3308520, User Manual

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3.22 GPIO Function
The 3308520/ offers one 8-bit GPIO port.
CN18: 8-bit Input/Output
PIN Description PIN Description
1 VCC 2 GND
3 GD0 4 GD4
5 GD1 6 GD5
7 GD2 8 GD6
9 GD3 10 GD7
1 9
10 2
MOV DX, 2EH
MOV AL, 87H
OUT DX, AL
OUT DX, AL
MOV AL, 07H
OUT DX, AL
INC DX
OUT DX, AL
DEC DX
MOV AL, 2AH
OUT DX, AL
INC DX
MOV AL, 0FCH
OUT DX, AL
DEC DX
MOV AL, 30H
OUT DX, AL
INC DX
MOV AL, 01H
OUT DX, AL
DEC DX
MOV AL, 0F0H
OUT DX, AL
INC DX
MOV AL, 0FFH
OUT DX, AL
DEC DX
MOV AL, 0AAH
OUT DX, AL