Article ID: 000074893 Content Type: Troubleshooting Last Reviewed: 12/31/2013

Are the Pre-CDR and Post-CDR Reverse Serial Loopback PMA Offset registers write only on Stratix V, Arria V, and Cyclone V transceiver devices?

Environment

  • Arria® V GZ FPGA
  • Arria® V GT FPGA
  • Cyclone® V GT FPGA
  • Stratix® V GX FPGA
  • Cyclone® V GX FPGA
  • Stratix® V GT FPGA
  • Stratix® V GS FPGA
  • Arria® V GX FPGA
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Description

Yes, the Pre-CDR and Post-CDR Reverse Serial Loopback PMA Offsets are write only on Stratix® V, Arria® V, and Cyclone® V transceiver devices?

You should implement custom logic to track reverse serial loopback status.

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