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ADV7630 SInk hotplug issue

Question asked by JosephSh Employee on Mar 28, 2014
Latest reply on Jan 17, 2017 by JeyasudhaMuthuPerumal

Last time, i post the ADV7630 720P resolution issue and it is solved as lasted 1.3C setting;

now, same proejct, customer meet the hotplug issue; after the system work well, customer hot plug the HDMI sink (monmitor), then there is no display; i had aksed customer to monitor the HPD_State, and asked to re-init the ADV7630, but the display can not be recovered!

i also asked to set the "HPD_DISABLE" to '`11', as the hardware manual, the HPD_STATE should be always '1'; but customer read it still '0' after move the HDMI monitor;

i asked custmer to monito the HDP_State, after the hot plug and the HPD_STATE is '1', then hardware reset the ADV7630 and re-init the ADV7630 (sames setting with power on init), but still don't have the normal display; probe the HDMI sigal, the TMDS CLOCK is right, but no other TMDA signal pairs;

 

but for the ADV7625, after the init config, there is no issue for the HDMI hot plug!

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