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Kangdi's avatar
Kangdi
Icon for New Contributor rankNew Contributor
3 months ago

Technical Inquiry regarding DPCU Block for CPRI IP Single-Trip Delay Calibration

I am currently implementing the "single-trip delay calibration" feature using the Intel CPRI IP core.

According to the User Guide (ID: 683595, Version: 2021.11.11), this feature requires the Dynamic Phase Control Unit (DPCU) block. The documentation states that "Intel provides the DPCU block with the CPRI IP." However, I am having difficulty locating this specific module.

Could you please clarify where this DPCU block is located or how it should be instantiated?

My design environment is as follows:

  • Quartus Prime Version: 20.4 Pro
  • Device Part Number: Arria 10 (10AS032H2F34I2SG)
  • CPRI IP Version: 19.4.0
  • Reference Document: CPRI Intel FPGA IP User Guide (ID: 683595)

Best regards!

 

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7 Replies

  • CheepinC_altera's avatar
    CheepinC_altera
    Icon for Regular Contributor rankRegular Contributor
    3 months ago

    Hi,

     

    Thank you for filing this case and sharing the details. I appreciate your patience. Please allow me some time to review the information, and I’ll get back to you as soon as possible. 

  • CheepinC_altera's avatar
    CheepinC_altera
    Icon for Regular Contributor rankRegular Contributor
    3 months ago

    Hi,

     

    Thank you for your inquiry regarding the Dynamic Phase Control Unit (DPCU) module referenced in the CPRI IP User Guide.

     

    To provide you with an update, I have attempted to generate the CPRI IP example design; however, I was unable to locate a distinct DPCU module within the generated deliverables. I am currently following up internally with the factory team to clarify the availability and access method for this module.

     

    I will keep you informed on the progress by end of next week or as soon as I receive a valid update from them. In the meantime, please feel free to reach out if you have any additional questions or if you do not hear back from me.

     

    Thank you for your patience and understanding.

    • Kangdi's avatar
      Kangdi
      Icon for New Contributor rankNew Contributor
      3 months ago

      Thank you very much for your explanation! Looking forward to your update.

      • CheepinC_altera's avatar
        CheepinC_altera
        Icon for Regular Contributor rankRegular Contributor
        3 months ago

        Hi,

         

        Just to keep you posted that I am still pending for Factory's valid response on this. I will continue to follow up with them and update you again on the progress by end of the week or as soon as there is any valid response. Please ping me if you do not hear back from me. Sorry for the delay. Thank you.