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Michael2021's avatar
Michael2021
Icon for Occasional Contributor rankOccasional Contributor
5 years ago

Cyclone 10 GX DisplayPort Rx

Hello dlim, I modified the custom Dipalyport Receiver board. The Modified point is CLKUSR pin only DisplayPort Receiver function still doesn't work. I attached two picture. Picture 1 : cy...
Michael2021's avatar
Michael2021
Icon for Occasional Contributor rankOccasional Contributor
5 years ago

Hello dlim,

I attached two picture and rx_analogreset, rx_digitalreset and rx_is_lockedtodata signal look good.

But still PC generate link failure (attached pic).

I think the failure is in DisplayPort link training sequence. I looked rx_reconfig read/write signal group and rx_link_rate_8bit appeared "14h, 0Ah, 06h. so PHY reconfiguration looks good.

Can you provide more information of DisplayPort link training sequence and aux channel access command to analyze problem ?

Any other check point do I need ?

Thanks

Michael