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Pin Name Function I/O Description
1 SO SERIAL OUTPUT –
2 SCL BUS SCL I/O IIC Bus port, SCL : Clock
3 SDA BUS SDA I/O IIC Bus port, SDA : Data
4 D0 – IN NOT USED
5 D1 – IN NOT USED
6 D2 – IN NOT USED
7 D3 – IN NOT USED
8 GND GND I
9 D4 AV SWITCH 1 OUT Connect to IC1001 2pin
10 D5 AV SWITCH 2 OUT Connect to IC1001 4pin
11 D6 AV SWITCH 3 OUT Connect to IC1002 2pin
12 D7 AV SWITCH 4 OUT Connect to IC1002 4pin
13 VDD VDD – 5V
14 CS2 CHIP SELECT3 I Fixed to Low
15 CS1 CHIP SELECT2 I Fixed to Low
16 CS0 CHIP SELECT1 I Fixed to Low
I/O Expander (IC899)
Mode SWITCH 1 SWITCH 2 SWITCH 3 SWITCH 4
TV Low High Low High
AV1 (Composite) Low Low Low High
AV1 (S-Input) High Low Low High
AV2 Low Low Low Low
Mode Switching Table