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Kavin's avatar
Kavin
Icon for Occasional Contributor rankOccasional Contributor
6 years ago
Solved

Transceiver Native PHY simulation error

I got some problems in simulating Native PHY recently,after compiling all the necessary design files, i can not excute simulation due to following errors: how to solve these errors,and any...
  • CheepinC_altera's avatar
    CheepinC_altera
    5 years ago

    Hi,


    For your information, the Native PHY can perform automatic word alignment if the RX word aligner mode is configured to “synchronous state machine”. I believe the example that you are having might be using manual alignment mode.


    Sorry for the inconvenience.



    Best regards,

    Chee Pin


Kavin's avatar
Kavin
Icon for Occasional Contributor rankOccasional Contributor
6 years ago

Hi

Thanks.I received your email last week.With your help,i can simulate now,but i found rx_parallel_data is not the same as tx_parallel_data,is there any specifical rules i should follow? If 8B/10B coder is not applied, rx_parallel_data should be exactly the same as tx_parallel_data,is it right?

Thanks

Kavin

CheepinC_altera's avatar
CheepinC_altera
Icon for Regular Contributor rankRegular Contributor
6 years ago

Hi,

Thanks for your update. Regarding the parallel data mismatch, for your information, to ensure the parallel data is matching, you would need to perform the word alignment. Just wonder if you have had a chance to look into word alignment? Are you running the simulation with the example design which I shared or your own design currently?

Thank you.

  • Kavin's avatar
    Kavin
    Icon for Occasional Contributor rankOccasional Contributor
    5 years ago

    Hi

    Thanks.I used to think that word alignment is done automatically by PHY. At your reminder, the simulation goes well after word alignment. Do all types of PHYs do not support automatic alignment, and does the actual design require internal logic for byte alignment?

    Thanks