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adv7343 RGB output image shift issue

Category: Hardware
Product Number: ADV7343

I am using ADV7343 chip. The input configuration is BT656 Ycbcr, and the output uses DAC1 as CVBS, DAC2 and DAC3 as Y/C, and DAC4, DAC5 and DAC6 as RGB output.

No matter whether the input is NTSC 480i or PAL 576i format, a problem is found now that the CVBS and Y/C outputs are normal, but the RGB output image is skewed to the right, I don't know why.

shifed to right

Thank you very much for your kind help.

moved & added tag
[edited by: emassa at 3:46 PM (GMT -4) on 24 May 2023]
Parents Reply
  • Hi,

      Please configure only below registers for RGB out and let us know the result,

    { 0x17, 0x02 } , // RGB CVBS and Y/C 14-26
    { 0x00, 0xFC } ,
    { 0x01, 0x00 } ,
    { 0x02, 0x10 } ,
    { 0x80, 0x11 } ,
    { 0x82, 0xC1 } ,
    { 0x87, 0x00 } , //YCbCr
    { 0x88, 0x00 } , //8bit YCbCr
    { 0x8A, 0x00 } , //SD timing mode 0

    Also note that, In SD Timing Mode 0, During this mode the S_VSYNC and S_HSYNC pins are not used, they should be tied to VDD_IO.