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CVBS input video disturbance issue

Category: Software
Product Number: ADV7280AM

Dear Engineer,

        To avoid the jitter issue caused by the ADV7280 I2P function, I disabled the I2P function and used the downstream RV1126B to perform de-interlacing. Now I find that with CVBS input, there is a disturbance phenomenon, while S-video input shows no disturbance. I also verified with the internal test pattern using REG0x14's FREE_RUN_PAT_SEL(100% color bars/Luma ramp/Boundary box), and there was no disturbance. How can I optimize the disturbance issue specifically for CVBS input?

  • Hi,

      Could you please crosscheck your configuration with our reference script inorder to check whether you have missed any recommended settings at ez.analog.com/.../5545.ADV7280M_5F00_Cust_2D00_VER.4.1.txt.zip

      Design support file link:  ADV7280 / ADV7280-M Design Support Files 

    Thanks,

    Poornima

  • ADV7280M_Cust-VER.4.1.txt has very few parameters, and after we modified them, there was no improvement.