Article ID: 000076975 Content Type: Troubleshooting Last Reviewed: 11/17/2011

CPRI_ROUND_DELAY Register Value in CPRI IP Core is Wrong

Environment

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

    Critical Issue

    Description

    The value in the rx_round_trip_delay field of the CPRI_ROUND_DELAY register is wrong. You cannot use this register value in the calculations described in the CPRI MegaCore Function User Guide.

    This issue affects all CPRI MegaCore function variations.

    This issue affects the accuracy of all delay calculations based on the round-trip delay value in the CPRI_ROUND_DELAY register.

    Resolution

    This issue has no workaround.

    This issue is fixed in version 11.1 of the CPRI MegaCore function.

    Related Products

    This article applies to 2 products

    Arria® V FPGAs and SoC FPGAs
    Stratix® V FPGAs

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