COMMELL LV-67M - Manual (Page 32)

LV-67M
User’s Manual
-31-
Appendix B
The GPIO’ can be programmed with the MS-DOS debug program using simple
IN/OUT commands.
The DC characteristics please refer to GPIO paragraph (Page25).
GPIO 0 1 2 3 4 5 6 7
bit 0 1 2 3 4 5 6 7
-o 2E 87 ;enter configuration
-o 2E 87
-o 2E 07
-o 2F 09 ;select Logical Device
-o 2E 30
-o 2F 02 ;activate GPIO function (The board use GPIO3)
-o 2E F0
-o 2F XX ;set
“01” GPIO as input, set “00” GPIO as output
-o 2E F1
-o 2F XX ;if set GPIO as output, t
his register’s value can be set “00~ FF”
Optional
-o 2E F2
-o 2F XX ;set
“01”, the respective bit are inverted (Both input and output)
;set
“00”, the respective bit are normal
For further information, please refer to Winbond W83627DHG-P datasheet.