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JPrig's avatar
JPrig
Icon for Occasional Contributor rankOccasional Contributor
4 years ago

Inter-board TTK fails

Hi, I have set up a TTK link between a board with a Cyclone V and another board with Arria 10. I have a stable CDR lock in both directions but when I start data transmission, it fails in both direc...
CheepinC_altera's avatar
CheepinC_altera
Icon for Regular Contributor rankRegular Contributor
4 years ago

Hi Julia,


As I understand it, you observe some problems when trying to perform a link BER test between CV TTK and A10 TTK. Based on your description, one of the possible reasons might be the patterns between the CV TTK is not directly compatible with the A10 TTK. Sorry as I do not have the visibility into data transmitted from the TTKs but this is just a suspect.


As a workaround, you may create simple test design with PRBS generator and checker. Run the BER test and monitor using signaltap. You may in parallel use the TTKs to dynamically tune analog settings on both device and monitor the BER in signaltap.


Please let me know if there is any concern. Thank you.


  • JPrig's avatar
    JPrig
    Icon for Occasional Contributor rankOccasional Contributor
    4 years ago

    Hi,

    thanks for your reply. We will try to proceed as you suggest.

    Regards,

    Julia