公开(公告)号：US10985764B1

公开(公告)日：2021-04-20

申请号：US16918854

申请日：2020-07-01

Applicant: XILINX, INC.

Inventor： Winson Lin ,  Jin Namkoong ,  Hongtao Zhang

IPC: H04L7/00 ,  H04L7/033 ,  H04L25/03 ,  H03L7/087 ,  H03L7/08

Abstract: An example method of clock and data recovery (CDR) includes adding a pre-defined offset to an output of a phase detector (PD) of a CDR circuit, and loading an accumulator of a frequency loop of the CDR circuit with a pre-defined load value. The method further includes detecting the phase of an incoming signal using a PD, and determining that the CDR has locked onto a real lock point. In some examples, the method further includes determining that the CDR has locked on a real lock point, and, in response to the determination, modifying the pre-defined offset to equal zero.