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. 15, 2014
Filed:
Feb. 28, 2013
Applicant:
Texas Instruments Incorporated, Dallas, TX (US);
Inventors:
Peter Michael Kavanagh, San Jose, CA (US);
Andrew Khar Boon Ong, Glasgow, GB;
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03L 7/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
Clock circuits are presented for providing a clock signal using multiple reference clock signals, including a PLL operating from a PLL reference clock signal, an FLL operating from an FLL reference clock signal, and a multiplexer circuit that selectively provides up and down signals from either a PFD of the PLL or the FLL to a charge pump of the PLL according to a reference clock select signal.