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
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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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