Problem about DM365 capture BT656 in continuous mode

zhou zheng

Hi all,

I'm trying to capture BT656/8Bit signal from an Video Decoder. When I use one-shot mode (ISIF->DDR), I can get a good UYVY picture from DDR. However, when I use continuous mode, the color of output picture is wrong(luma data is 0, please refer to attachment).

Because I can get normal UYVY image in one-shot mode, I believe the Video Decoder output sequence is UYVY and the isif setting is correct too. I tried various ipipeif, ipipe and resize registers but no any result. I donot understand why ISIF to DDR is ok but ISIF->IPIPE->RSZ is wrong. Anyone who can give me some advices? Thanks a lot.

over 13 years ago

0 sujit mahapatro over 13 years ago

Genius 3930 points

similar issue has been discussed

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/100/t/102520.aspx

please have a look.

0 zhou zheng over 13 years ago in reply to sujit mahapatro

Prodigy 50 points

Hi sujit,

thanks for your replay.

I have read this link. It seems that I meet the same problem as you.

At last, You said you just change the sensor output sequence to UYVY to resolve this problem. Because I can get UYVY image under one-shot mode, I think my sensor output is UYVY.

You also said in this link that you could get true color image in one-shot mode to. whether the image format is YUYV or UYVY? I think if your sensor output is YUYV, then the image from ISIF to DDR is YUYV too.

Thanks!

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Problem about DM365 capture BT656 in continuous mode