SBC86840 Series All-In-One Mini ITX Board User’s Manual
Digital I/O
80
Using the Digital Output Function
Start
↓
Un-Lock SuperI /O:
O 2E 87 ; Un-lock super I/O
O 2E 87 ; Un-lock super I/O
↓
SelectMultiplexed pin to GPIO Function:
O 2E 2A
O 2F FF
↓
Select Logic device:
O 2E 07
O 2F 07
↓
Activate Logic Device:
O 2E 30
O 2F 01
↓
Select GPO Function:
O 2E F0
O 2F E0 (for 3 IN/5 OUT)
( When set to a '1', respective GPIO port is programmed as an input port.
When set to a '0', respective GPIO port is programmed as an output
port.)
↓
Output Data:
O 2E F1
O 2F XX=00,01,02,…FF (XX is Output Data)
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