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ADV7480 color space conversion

Question asked by mchoi on Oct 11, 2015
Latest reply on Oct 12, 2015 by GuenterL

Read HDMI RX map 0x53 HDMI_COLORSPACE[3:0] it always returns 0 whenever HDMI source is RGB/YCbCr4:4:4/YCbCr4:2:2.

Also read AVI Info frame first 8bytes.  They are always zero.

 

Do I miss something to configure?

 

Modified IO map 0x12 CP_INP_COLOR_SPACE[3:0] Forces RGB input(0001).  It works with RGB HDMI input source.

Modified IO map 0x12 CP_INP_COLOR_SPACE[3:0] Forces YCbCr 709 input(0111).  It works with YCbCr4:4:4/YCbCr4:2:2 HDMI input source.

 

How to detect input color sources?

Is there something else I should configure before reading back HDMI input color format correctly or AVI info frame?

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