The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 30, 2018
Filed:
Nov. 08, 2016
Xilinx, Inc., San Jose, CA (US);
Yu Xu, Palo Alto, CA (US);
Winson Lin, Daly City, CA (US);
Caleb S. Leung, San Jose, CA (US);
Alan C. Wong, San Jose, CA (US);
Christopher J. Borrelli, Los Gatos, CA (US);
Yohan Frans, Palo Alto, CA (US);
Kun-Yung Chang, Los Altos Hills, CA (US);
XILINX, INC., San Jose, CA (US);
Abstract
An example method of clock and data recovery in a receiver includes generating data samples and crossing samples of a received signal based on a data phase and a crossing phase, respectively, of a sampling clock supplied by a phase interpolator in the receiver; generating a phase detect result signal in response to phase detection of the data samples and the crossing samples; filtering the phase detect result signal to generate a phase interpolator code, the phase interpolator generating the sampling clock based on the phase interpolator code; determining an average phase detect result from the phase detect result signal; and adjusting the phase interpolator code in response to the average phase detect result being less than a threshold value.