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:
Apr. 28, 2015
Filed:
May. 15, 2013
Applicant:
Exar Corporation, Fremont, CA (US);
Inventors:
Sadettin Cirit, Sunnyvale, CA (US);
Jose Antonio Salcedo, Livermore, CA (US);
Assignee:
Exar Corporation, Fremont, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 7/00 (2006.01); H04L 7/033 (2006.01); H03L 7/08 (2006.01); H03L 7/081 (2006.01);
U.S. Cl.
CPC ...
H04L 7/0337 (2013.01); H04L 7/033 (2013.01); H03L 7/0807 (2013.01); H03L 7/0814 (2013.01);
Abstract
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.