BackerShu
|
To my certain knowledge,
PLL-based CDR usually encounters a tradeoff between the Jitter Transfer and Jitter Tolerance since their cut frequencies are dependent to each other. Multichannel Crosstalking, as mentioned above, is also a annoying problem in PLL-based CDR.
PI-based CDR usually is limited by its phase jump, or quantization noise, and multiphase clock routing could also be a problem.
I think both of them could provide clock and data recovery.
|