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Colin_liu's avatar
Colin_liu
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2 years ago

How to implement high speed port(such as HDMI) into FPGA chips

Hi experts, We just do some low speed IO function previously and some high speed port needed to be implement recently. Could you please help some confusion. Take HDMI port as example: 1.We can find...
FvM's avatar
FvM
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2 years ago
Search Intel web site for HDMI and you are linked to HDMI IP user guide, HDMI PHY user guide and AN837 describing implementations on recent FPGA with Gigabit interface like Cyclone 10 GX and Arria 10. There also links to hardware schematics in AN837.

As you already found out, IO standard of Gigabit transceivers isn't compatible to TMDS. Intel suggests AC coupling for a direct connection. https://www.intel.com/content/www/us/en/support/programmable/articles/000074904.html
The available evaluation boards are however using a dedicated TMDS driver chip between FPGA and HDMI sink. I'm no HDMI expert, but it's said that DC coupling is required during link initialization.
Colin_liu's avatar
Colin_liu
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2 years ago

Thanks sir,

You give us valuable informations. It seems we have to consider more aspect when it comes to high speed port design. We are trying to understand your information well.