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:
Feb. 23, 2010
Filed:
Mar. 04, 2008
David M. Schlueter, Lake Villa, IL (US);
Michael C. Doll, Gurnee, IL (US);
David M. Schlueter, Lake Villa, IL (US);
Michael C. Doll, Gurnee, IL (US);
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
A lock loop circuit () includes a precharge circuit (), an oscillator circuit (), and a calibration circuit (). The calibration circuit includes at least one register (). The precharge circuit provides a precharge signal (). The oscillator circuit provides an output frequency signal () in response to a steering signal () that is based on the precharge signal. The calibration circuit, prior to the lock loop circuit entering a disabled mode of operation, determines a calibration value () for the precharge circuit based on the precharge signal and the steering signal. The calibration circuit stores the calibration value as a digital calibration value () in the register.