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the video data of TVP5150 are instable

Other Parts Discussed in Thread: TVP5150AM1, TVP5150

Dear Sir,

       I'm using TVP5150AM1 to capture video data(BT656) from analog NTSC camera. When the main controller had done the initializing TVP5150 with I2C bus, the output clock is 27Mhz, VSYNC and HSYNC are normal, the data bus has the video data  but the video data are  instable.

Do you know the reason of this problem? Thank you.

jason sun

2016-7-1CVBS.pdf

  • What exactly do you mean by "unstable"?
    Make sure you are capturing the digital data on the correct clock edge.
    Check the eye diagrams for all the data signals with respect to the clock to make sure you have enough setup/hold margin for your receiving device.
    BR,
    Steve