Article ID: 000076494 Content Type: Troubleshooting Last Reviewed: 05/18/2017

Why might my 50G Ethernet IP Core lose word lock?

Environment

  • Intel® Arria® 10 GT FPGA
  • Intel® Quartus® Prime Pro Edition
  • 25G 50G Ethernet
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    Critical Issue

    Description

    Due to a problem in the Quartus® Prime software version 17.0 and earlier, the 50G Ethernet IP core will lose word lock after receiving 16 incorrect frame headers in a window length of 64 frame headers. The Ethernet specification states that this should only happen after 65 incorrect frame headers in a window length of 1024 frame headers.

    Resolution

    This problem is scheduled to be fixed in a future release of the Quartus Prime software.

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