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:
Jun. 28, 2016
Filed:
Jul. 09, 2015
Applicant:
Xilinx, Inc., San Jose, CA (US);
Inventors:
Yu Xu, Palo Alto, CA (US);
Yohan Frans, Palo Alto, CA (US);
Kun-Yung Chang, Los Altos Hills, CA (US);
Assignee:
XILINX, INC., San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 7/02 (2006.01); H04L 7/00 (2006.01); H04L 7/04 (2006.01); H04L 7/10 (2006.01);
U.S. Cl.
CPC ...
H04L 7/002 (2013.01); H04L 7/041 (2013.01); H04L 7/10 (2013.01);
Abstract
Clock data recovery can be accomplished using a phase change determination circuit that generates, based upon detected phase differences between a capture clock signal and data signal, a delta signal and a delta selection signal. A calculation circuit generates a set of phase interpolation (PI) codes from prior and speculative values of the delta signal. A selection circuit selects, in response to the delta selection signal, between the sets of PI codes, which are provided as an output of the clock data recovery device.