Hello.
Obviously, the pre-emphasis parameters of the DS25MB100 have been designed for the 2.5Gbps application.
The device datasheet indicates in the introductory features list that the DS25MB100 supports 0.25Gbps to 2.5Gbps operation.
We are using it at 1.25Gbps (for SGMII/1000BASE-X link multiplexing/replication).
What would be the recommended pre-emphasis settings for this bitrate? (comparing with table 4 and 5)
Many thanks and best regards,
André Gillard