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Using the ADV7391 in SD YCrCb PAL to RGB (sync in green) configuration

Question asked by JGen on Apr 4, 2018
Latest reply on Jul 3, 2018 by JGen

II'm unable to use the ADV7391 in SD YCrCb PAL to RGB (sync in green) configuration.

I'm in the following configuration:
 - Input format = 625i(PAL) / Input data width = 8-bit SDR / Sync format = EAV-SAV / Input Color Space = YCrCB
 - Output Color Space = RGB
==> according to the table 63 (data sheet Rev. I, page 92) I apply the configuration of table 84
But unfortunately it doesn't work: the screen connected to the video ouput shows nothing.

On the other hand if I program the ADV7391 in pattern generator mode (PAL-RGB) by following the indications on page 79 of the data sheet, the color bars are displayed correctly on the screen.
(configured registers: 0x00=0x1C / 0x02=0x10 / 0x80=0x11 / 0x82=0xC1 / 0x84=0x40 / 0x8C=0xCB / 0x8D=0x8A / 0x8E=0x09 / 0x8F=0x2A)

And if I configure the ADV in the following configuration:
 - Input format = 625i(PAL) / Input data width = 8-bit SDR / Sync format = EAV-SAV / Input Color Space = YCrCB
 - Output Color Space = YPrPb
==> according to the table 63 (data sheet Rev. I, page 92) I apply the configuration of table 81 plus the reg 0x02=0x30
the video is displayed correctly on the screen (which is set to YUV)

So what is wrong in the YcrCb --> RGB configuration ?

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