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mem's avatar
mem
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5 years ago

Arria 10 JESD204B Interoperability Reference Design timing issues

IP core Arria 10 JESD204B AD9144-AD9625 Interoperability Reference Design uses the following attribute for register duplication :

altera_attribute of normal : architecture is "-name PHYSICAL_SYNTHESIS_REGISTER_DUPLICATION ON; .... "

Quartus 19.1 ignores the register duplication attribute and we cannot get the required timing. All the failing paths have the following node as a starting point :

u_jesd204b_ed_qsys|jesd204b_subsystem_0|rst_controller|alt_rst_sync_uq1|altera_reset_synchronizer_int_chain_out

We tried several ways to convince Quartus to automatically duplicate registers in these paths, but it keeps ignoring all settings for register duplication.

Is there an attribute suitable for Arria 10 for register duplication?

5 Replies

  • KennyT_altera's avatar
    KennyT_altera
    Icon for Super Contributor rankSuper Contributor
    5 years ago

    Any reason that you want to duplicate those register? Are this for timing closure? If yes, can you send us a screenshot of the timing violation.


    Usually you can see the duplication failure in the fitter/synthesis reports. Can you check on it? it will show the failing reason. But I think this feature only exist in the latest Q20.4, can you upgrade your Quartus to latest version?


    • mem's avatar
      mem
      Icon for New Contributor rankNew Contributor
      5 years ago

      At this point we have tested every design provided by Intel for jesd204b for Arria10

      and we are a bit confused. We are interested to purchase a license for jesd204b from

      Intel.

      Any support is appreciated,

      Thank you.

  • KennyT_altera's avatar
    KennyT_altera
    Icon for Super Contributor rankSuper Contributor
    5 years ago

    Since this thread had been answered, we shall close this thread. If you still need further assistance, you are welcome to post a response within 15days or open a new thread, some one will be right with you. After 15 days, this thread will be transitioned to community support. The community users will be able to help you with your follow-up questions.