The 9341 support 4-line Serial Interface and 3-line Serial Interface (SPI Interface)
3-line Serial Interface(II): SPI CLK ,SPI MISO ,SPI MOSI,SPI CS (SS)
4-line Serial Interface(II):SPI CLK ,SPI MISO ,SPI MOSI ,SPI CS (SS),D/CX.
D/CX: CX=Command (LOW LEVEL),D=Data(HI LEVEL)
Example:
REG Command 0x01 ,Data=0x03 0x04
CS -> LOW
D/CX (GPIO) -> LOW (Send command)
SPI OUT 0x01
D/CX (GPIO) -> HI (Send DATA)
SPI OUT 0x03
SPI OUT 0x04
CS -> HI
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