Article ID: 000086192 Content Type: Troubleshooting Last Reviewed: 07/09/2015

40GbE 40GBASE-KR4 IP Core Might Not Perform Auto-Negotiation Successfully on Restart

Environment

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

    Critical Issue

    Description

    In designs that use the reconfiguration bundle that Altera provides with the 40GbE 40GBASE-KR4 IP core example design, the 40GBASE-KR4 IP core might not operate correctly in auto-negotiation on restart. In the reconfiguration bundle, temperature-based tuning can interfere with the process of reconfiguring the IP core in auto-negotiation mode. As a result, the IP core might not complete auto-negotiation successfully.

    This issue only manifests on restart and never in initial power-up.

    Resolution

    This issue has no workaround. This issue is fixed in version 15.0 Update 1 of the 40-100GbE IP core.

    Related Products

    This article applies to 1 products

    Intel® Programmable Devices

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