how to improve the PAL video play-out quality.

WeiJiang

Dear all,

My hw is dm365evm board revision D, I can see the PAL video play-out quality is bad.

In the psp3.10 release note(http://processors.wiki.ti.com/index.php/DaVinci_PSP_03.01_GA_%28r37%29_Release_Notes#Known_Issues), it shows:

"Video display: On DM365 EVM (up to board revision E), PAL video play-out has worse quality than NTSC video play-out operation

Workaround: Use board revision E, where board modifications have been done to improve the PAL video quality."

I get the hw spec here(http://support.spectrumdigital.com/boards/evmdm365/revf/), adn find the there are no diffrence of video-output part of revison E and the before versions.

Can someone tell me the key element to improve the PAL video quality?

Thanks. Any clue will be appreciated.

Wei Jiang

over 14 years ago

0 Tai Nguyen over 14 years ago

TI__Expert 5955 points

Hi Wei,

According to SDI, the rev E DM365 EVM has some filters and filter values changed and that should open the bandwidth of the TVOUT.

Thanks,

-Tai Nguyen

0 Jinh over 14 years ago in reply to Tai Nguyen

Expert 2315 points

The board layout has been changed so that the output stage feedback resistor does not sit miles away from the device but hopefully now as close to the dm365 as possible.

Jinh T.

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how to improve the PAL video play-out quality.