I use ADV7193 video encoder with ADA4430. ADA4430 output is connected to ADV7182. I generate color bar with ADV7391 and capture it with ADV7182. ADA4430 output is circutry is designed as shown in the datasheet (http://www.analog.com/media/en/technical-documentation/data-sheets/ADA4430-1.pdf ) (page 13 figure 29).
The CBVS video is connectted to the ADV7182 input. ADV7182 input ciruitry is also designed as shown in the datasheet (http://www.analog.com/media/en/technical-documentation/data-sheets/ADV7182.pdf ) (page 13 figure 6).
The white and the yellow colors cannot be captured. White and yellow are received as gray(808080 - YCbCr) . Can you help about this issue? Does the schematic causes this problem?