User`s guide

16  Registers Format
3.3 Digital Output Register
D0~D3 is the digital output signal written to output channel. D4~D7
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Address: BASE + 40(hex)
Attribute: write only
Data Format:
Bit 7 6 5 4 3 2 1 0
BASE+20 X X X X DO3 DO2 DO1 DO0
3.4 Digital Input Ports
D4~D7 is digital input signal from CN1.
D0~D3 is read back signal from digital output channel.
Address: BASE + 40(hex)
Attribute: read only
Data Format:
Bit 7 6 5 4 3 2 1 0
BASE+20 DI3 DI2 DI1 DI0 DO3 DO2 DO1 DO0