ADV7179 can not output color bar

Hi,

  Please note customer is having difficulty getting the part to output a colorbar test pattern and ensure they part by checking their design carefully against our recommended circuit for things like Rset and loop filter components.

  Also note ADV7179 is an extremely old part, ADV734x/ADV739x would be more appropriate.

  Please share your register configuration.

Thanks,

Poornima

Hi, this problem have been sloved.It does matter with the external 33.333333MHz crystal of zynq.Its accuracy is not high enough。it is only 33.30MHz. so the 29.5MHz clk to ADV7391， from PLL with using PL clock in put does  not have high accutacy, only 29.47MHz。I change a crystalof zynq,  Adv 7391 display color bar normally.

Hi,

 Thanks for letting us know.

Regards,

Poornima