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:
Mar. 03, 2015
Filed:
Mar. 10, 2010
Wei Fu, San Diego, CA (US);
Hongming an, San Diego, CA (US);
Bin Nie, Shenzhen, CN;
Jun YE, Shenzhen, CN;
Wei Fu, San Diego, CA (US);
Hongming An, San Diego, CA (US);
Bin Nie, Shenzhen, CN;
Jun Ye, Shenzhen, CN;
SMSC Holdings S.A.R.L., Luxembourg, LU;
Abstract
In one example, a system includes an oscillator adapted to provide an oscillator signal, a frequency divider adapted to divide the oscillator signal to provide a divided oscillator signal, and a phase-frequency detector adapted to provide phase-frequency detection signals in response to a reference clock signal and the divided oscillator signal. The system also includes a charge pump adapted to provide first output signals in response to the phase-frequency detection signals, a phase detector adapted provide second output signals in response to an incoming data signal and the oscillator signal, and one or more switches adapted to pass the first output signals during a frequency acquisition mode and pass the second output signals during a phase lock mode. The system also includes an active filter adapted to filter the passed first or second output signals. The oscillator is adapted to adjust a frequency of the oscillator signal in response to the filtered first or second output signals.