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DS90UB940-Q1: UB940 convert RGB888 to YUV422 register configuration

chun lin
Prodigy 30 points
Part Number: DS90UB940-Q1

Tool/software:

hello! We use DSI-> RGB888---->DS90UB681------FPD link III-------DS90UB940------YUV422 ->CSI, Can you provide a register configuration table for UB940.

  • 0
    Prodigy 30 points

    CSI parameters: YUV422 8bit /   DATA LANE *2 / CLOCK LANE *1

  • 0 in reply to chun lin
    TI__Mastermind 33625 points

    Hi Lin,

    I have attached the register writes to configure the 940 as you described. Do you need CSI continuous clock or the VCID to be set to a particular value? 

    Best,

    Jack

    Fullscreen 940_config.txt Download 
    desAddr = 0x58

board.WriteI2C(desAddr, 0x2, 0x80) #Disable video output
board.WriteI2C(desAddr, 0x6A, 0x20) #CSI 2 lanes, non-continuous clock
board.WriteI2C(desAddr, 0x6B, 0x50) #Input data RGB444, output CSI YUV422_8
board.WriteI2C(desAddr, 0x2, 0x90) #Enable video output

  • 0 in reply to Jack Scherlag
    Prodigy 30 points

    hello jack, we need CSI continuous clock and  VCID set 0

  • 0 in reply to chun lin
    TI__Mastermind 33625 points

    Hi Lin,

    I modified the code for CSI continuous clock. The VCID is set to 0 by default so there are no register writes needed.

    Best,

    Jack

    Fullscreen 1273.940_config.txt Download 
    desAddr = 0x58

board.WriteI2C(desAddr, 0x2, 0x80) #Disable video output
board.WriteI2C(desAddr, 0x6A, 0x22) #CSI 2 lanes, continuous clock
board.WriteI2C(desAddr, 0x6B, 0x50) #Input data RGB444, output CSI YUV422_8
board.WriteI2C(desAddr, 0x2, 0x90) #Enable video output

  • 0 in reply to Jack Scherlag
    Prodigy 30 points

    OK，thank you very much!