Decoupling bang-bang CDR and DFE

摘要

An apparatus including a bang-bang clock data recovery module and a decision feedback equalizer. A phase detector of the bang-bang clock and data recovery module may be configured to eliminate coupling between the bang-bang clock and data recovery module and the decision feedback equalizer based upon an error signal of the decision feedback equalizer and a predetermined coefficient.

主权项

1. An apparatus comprising:
a bang-bang clock and data recovery module; and a decision feedback equalizer, wherein a phase detector of said bang-bang clock and data recovery module is configured to generate a first output signal in response to a first data sample, a second data sample, and a crossing sample of a crossing between said first data sample and said second data sample and coupling between said bang-bang clock and data recovery module and said decision feedback equalizer is eliminated by subtracting a mathematical product of said first data sample, an error signal of the decision feedback equalizer, and a predetermined coefficient from said first output signal.