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:
Jul. 19, 2016
Filed:
Apr. 14, 2015
Applicant:
Texas Instruments Incorporated, Dallas, TX (US);
Inventors:
Reza Hoshyar, San Jose, CA (US);
Kevin Zheng, Alhambra, CA (US);
Nirmal Warke, Saratoga, CA (US);
Ali Kiaei, San Jose, CA (US);
Ahmad Bahai, Lafayette, CA (US);
Assignee:
TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04L 27/00 (2006.01); H04L 7/04 (2006.01); H04L 7/00 (2006.01); H04L 25/03 (2006.01);
U.S. Cl.
CPC ...
H04L 7/042 (2013.01); H04L 7/0087 (2013.01); H04L 25/03273 (2013.01);
Abstract
A device and method for providing clock data recovery (CDR) in a receiver is disclosed. The method comprises receiving a Phase Amplitude Modulation (PAM) signal; on startup, using a non-return-to-zero (NRZ)-based phase frequency detector (PFD) to acquire signal frequency from the received PAM signal; and responsive to a determination, switching to a PAM phase detector (PD) for steady state operation.