AAEON PICO-HD01 - Manual (Page 100)

P I C O - I T X B o a r d P I C O - H D 0 1
Appendix E Electrical Specifications for I/O Ports E-4
E.3 Digital I/O Register
Table 2 : SuperIO relative register table
Default Value Note
Index 0x2E
SIO MB PnP Mode Index Register
0x2E or 0x4E
Data 0x2F
)
SIO MB PnP Mode Data Register
0x2F or 0x4F
Table 3 : Digital Input/Output relative register table
LDN Register BitNum Note
GPIO1 Direction 0x06 0xD0 0 0:input, 1: output
GPIO2 Direction 0x06 0xD0 1
GPIO3 Direction 0x06 0xD0 2
GPIO4 Direction 0x06 0xD0 3
GPIO1 Output Level 0x06 0xD1 0 0:low, 1: high
GPIO2 Output Level 0x06 0xD1 1
GPIO3 Output Level 0x06 0xD1 2
GPIO4 Output Level 0x06 0xD1 3
GPIO1 Status 0x06 0xD2 0 0:low, 1: high
GPIO2 Status 0x06 0xD2 1
GPIO3 Status 0x06 0xD2 2
GPIO4 Status 0x06 0xD2 3