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. 16, 2016
Filed:
Aug. 05, 2015
Global Unichip Corporation, Hsinchu City, TW;
Taiwan Semiconductor Manufacturing Co., Ltd., Hsinchu, TW;
GLOBAL UNICHIP CORPORATION, Hsinchu, TW;
TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD., Hsinchu, TW;
Abstract
A clock and data recovery (CDR) circuit and method are disclosed herein. The CDR circuit includes a data analysis module, a loop filter module and a phase adjust module. The data analysis module generates an error signal according to an input data, a first clock signal, and a second clock signal. The loop filter module generates a first corrective signal according to the error signal, a frequency threshold value, and a phase threshold value. The phase adjust module generates the first clock signal and the second clock signal according to the first corrective signal. The loop filter module further accumulates the error signal to generate an accumulated value, and to compare the accumulated value with an accumulated threshold value, so as to dynamically adjust the accumulated threshold value, the frequency threshold value, and the phase threshold value.