ALL DIGITAL BURST-MODE CLOCK AND DATA RECOVERY (CDR)

摘要

The present invention relates to a clock and data recovery (CDR) unit comprising of a bang-bang phase detector to receive data and a recovered clock from a phase selector multiplexer. The phase detector produces a late and an early comparison output. A block (digital filter) receives the late and early input and produces a multiplexer selector control signal. The phase selector multiplexer selects a clock phase as the recovered clock signal using multiplexer selector control signal.

主权项

1. A clock and data recovery (CDR) unit comprising:
a bang-bang phase detector to receive data and to receive a recovered clock from a phase selector multiplexer and to produce a late and an early comparison output; a block to receive the late and early comparison outputs and produce a Grey code output; the phase selector multiplexer to select a clock phase as the recovered clock signal using the Grey code output.