vid_de signal behavior in HDMI Intel FPGA IP sink (RX)

Hi,

vid_de is input port to Intel FPGA HDMI IP that indicate active picture region only.

This is input port controlled by user logic design and not output port from HDMI IP.

If HDMI IP see "1" on vid_de then HDMI will process the data as "active video".

Thanks.

Regards,

dlim

hi, Dim., thanx.

In the SINK part of HDMI, (the video RX) the vid_de is output from the core .

So the question is if it works as "pixel valid" signal where it may also be invalid in some clock cycles during the "active video" region?

Hi,

Sorry, I am not aware you are referring to HDMI sink.

I am not familiar with pixel valid signal.

If you look at the next page of HDMI user guide doc (page 102)

• https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/ug/ug_hdmi.pdf
• HDMI IP sink does have locked signal (to detect TMDS color) and vid_lock signal (to detect problematic frame)

Are you looking for something like these status signal ?

Thanks.

Regards,

dlim