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Query regarding i.mx6 Dual SabreSD, HSync VSync in case of HDMI/LCD

Question asked by Ashwin Rase on Jul 16, 2015
Latest reply on Jul 19, 2015 by igorpadykov

Hi,

We are using i.mx6 Dual SabreSD. And connected HDMI/LCD as output device on video 0.

We measured DE(Data ready), HSync and VSync signals on EVM. All signals are (active) even if we don't send any data.

And all became off As soon as HDMI/LCD went in sleep mode.

 

Why HDMI/LCD need HSync, VSync and DE even if there is no data on lines?

How dose display understand if any data should be displayed or not using these signals?

 

Thanks and Regards,

Rinkesh Patel

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