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AD9889B,DVI display, black tint!

Question asked by MichaelMa on Nov 13, 2012
Latest reply on Nov 13, 2012 by GuenterL

Using AD9889B to display 720p, but the whitest is gray tint, the registers configurated as follows:


Register       Value             meaning                          

0x41              0x50              power down

0x41              0x20              power up

0x15              0x04              input style---16 bit YCbCr 4:2:2 (embedded syncs)

0x16              0x30              output format is RGB4:4:4/ 4:2:2 width is 8bits/ input style is style 1

0x17              0x00             

0x3B              0x01              enable csc


the color of the image darker overall,and the color white appears yellow tint or gray tint;

my question is why the image darker?  and the registers configurated right or wrong,how can I correct ?


another question is when the  input data is BT656(interlace, 25frames/second), and display by DVI, the output image is displayed by frame

or by field; 

in  20121113(001).jpg , the left monitor displays the BT656(25f/s) by AD7180, the left one displays the BT656 by AD9889B(60f/s)(embedded the image data into 720p stream, display by 720p);