Article ID: 000081709 Content Type: Troubleshooting Last Reviewed: 10/09/2012

Intermittent Ethernet Link Failure and Data Corruption when Enable SGMII Bridge Option is set to OFF

Environment

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

    Critical Issue

    Description

    Intermittent Ethernet link failure and data corruption occurs when the ’Enable SGMII bridge option’ is set to OFF (1000Base-X Mode) while running any Triple Speed Ethernet variant with a transceiver.

    This issue affects all Stratix V, Arria V, and Cyclone V devices.

    Resolution

    Use an alternative 1000Base-X mode in a different IP variant:

    Generate the Triple Speed Ethernet MegaCore with the ’Enable SGMII bridge option’ set to ON.

    Configure the SGMII_ENA and USE_SGMII_AN bit to 0 in the PCS IF_Mode register.

    This issue is fixed in version 12.0 of the Triple Speed Ethernet MegaCore function.

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