Due to the specifications of the device, we link at 3.125Gbps and then link at 6.25Gbps. At that time, the Transceiver will be reconfigured, but is it necessary to perform Duty Cycle Distortion (DCD) Calibration?

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Due to the specifications of the device, it is linked at 3.125 Gbps and then linked at 6.25 Gbps. At that time, the Transceiver will be reconfigured, but do I need to do a Duty Cycle Distortion (DCD) Calibration?

Category: Transceiver
tool:-
Device: Arria® V, Cyclone® V

DCD Calibration is recommended.

Reference information
https://www.altera.com/en_US/pdfs/literature/an/an676.pdf
(Search for Manual Trigger for DCD Calibration IP via Register-based Reconfiguration.)

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