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Wrong color out of AD9889B device

Question asked by Blomman on Oct 12, 2011
Latest reply on Nov 9, 2012 by mattp



can anyone explain to me how to set up the color space converter in the AD8998B device in a correct way. I get wrong color out of the device.

I have SDR 444 24-bits RGB in to the device and want to put the same out. First I tryed with the csc disabled with no luck and then I tryed to set the csc mode register 0x17 [4:3] to 0b00 and enable the csc by setting register 0x3B [0] to 0b1 and then used the coeffcients in table 38, "Identity Matrix (Input=Output)", on page 37 in the programming guide but I still got wrong colors out on my PC-monitor. Im using a DVI testpattern generator as input source so I can send for example a tradionell color bar and and grey scale bar. In the grey scale bar it's very easy to see that the conversion is wrong.        I got colors in some of the grey stripps!

Have anyone implemented a RGB in to RGB out on this device? Please, help me cause I'm stucked!


Best regards