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Elad0708's avatar
Elad0708
Icon for New Contributor rankNew Contributor
1 year ago

DpX4 Simulation

I Created design based on DPX4 5.4GHz. The example design includes 'dp_gxb_sysclk' module. According to Ip generation the reference clock supposed to be 150Mhz. I created simulation based on this design and it seems that the pll doesn't lock and no ref_clock or sys_clock is driven at the pll outputs. I will appricate If I can get help on this subject.

The device is Aglilex-7.

Best Regards,

Elad Rotem

9 Replies

  • Farabi's avatar
    Farabi
    Icon for Regular Contributor rankRegular Contributor

    Hello,


    We will look into your PLL setting first.

    1. Do you have design example we can check your PLL parameters?
    2. If you reduce the output clock speed- can it lock?


    possible cause PLL wont lock:

    a. VCC to PLL not stable - need to capture scope shot

    b. unstable refclk - need to capture scopeshot

    c. PLL reset signal triggered - need to check schematic


    regards,

    Farabi



    • Elad0708's avatar
      Elad0708
      Icon for New Contributor rankNew Contributor

      Hi Farabi,

      Thank you for your response. The model I have issue is simulation and not lab test.

      In simulation the pll doesn't lock or drive any clock at his outputs.

      Regards,

      Elad

  • AqidAyman_Altera's avatar
    AqidAyman_Altera
    Icon for Regular Contributor rankRegular Contributor

    Hello,


    May I know which example design that you are referring to? Can you pointed out to us?


    Regards,

    Aqid


  • Elad0708's avatar
    Elad0708
    Icon for New Contributor rankNew Contributor

    Hi Aqid,

    The link you mention is for Arria V, Cyclone V, and Stratix V. I don't see any support for Agilex-7. Also, it only supports Modelsim.

    I created the DisplayPort IP from the Quartus and then press on 'create example design'.

    Regards,

    Elad

  • VenT_Altera's avatar
    VenT_Altera
    Icon for Frequent Contributor rankFrequent Contributor

    Hi Elad,


    Do you have further questions on this thread?


    Thanks.

    Best Regards,

    Ven


  • VenT_Altera's avatar
    VenT_Altera
    Icon for Frequent Contributor rankFrequent Contributor

    Hi Elad,


    We have not received any response from you to our previous reply. Please login to ‘https://supporttickets.intel.com’, view details of the desired request, and post a feed/response within the next 15 days to allow me to continue to support 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.


    Thanks.

    Best Regards,

    Ven