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?

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.