Article ID: 000087158 Content Type: Troubleshooting Last Reviewed: 05/17/2013

CPRI IP Core Variations That Target a Cyclone V GX Device Do Not Achieve Timing Closure

Environment

  • Quartus® II Subscription Edition
    • BUILT IN - ARTICLE INTRO SECOND COMPONENT

    Critical Issue

    Description

    CPRI IP core variations that target a Cyclone V GX device fail to achieve timing closure with the default Quartus II Fitter settings. Specifically, they experience hold time violations on the PCS-PLD path.

    Resolution

    To achieve better timing closure results, perform one of the following actions:

    • Add set_min_delay assignments to overconstrain timing.
    • Try different Quartus II Fitter seeds.

    This issue will be fixed in a future version of the CPRI MegaCore function.

    Related Products

    This article applies to 1 products

    Intel® Programmable Devices

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