Article ID: 000078609 Content Type: Troubleshooting Last Reviewed: 04/11/2023

Why does temperature dependent CDR lock loss happen on Cyclone® V GT device receiver channels?

Environment

  • Quartus® II Software
  • BUILT IN - ARTICLE INTRO SECOND COMPONENT
    Description

    Due to a bug in the Quartus® II software version 13.1 and earlier, you might see temperature-dependent CDR loss of lock on Cyclone® V GT device receiver channels.

    When the device junction temperature is approximately 75 degrees C or higher, CDR loss of lock may be seen due to an incorrect CDR setting when the transceiver is configured as the data rate of 6.144 Gbps.

    Resolution

    This problem is fixed in Quartus® II software version 14.1.

     

    Related Products

    This article applies to 2 products

    Cyclone® V GT FPGA
    Cyclone® V ST SoC FPGA