What is clock and data recovery?

[@olegs8922]

How do we know where to sample if CDR is bypassed? We may end up sampling right at the transition and see no signal.

[@eshabyalcn2747]

Yes, that is possible if we mentioned the type of a receiver that using clock recovery process from data straem. However, this is just retimer, which means that's role is just improve signal integrity on the communication channel.