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:
Dec. 06, 2016
Filed:
May. 20, 2015
Global Unichip Corporation, Hsinchu, TW;
Taiwan Semiconductor Manufacturing Co., Ltd., Hsin-Chu, TW;
GLOBAL UNICHIP CORPORATION, Hsinchu, TW;
TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD., Hsin-Chu, TW;
Abstract
An integrated circuit includes a main clock tree, a reference clock trunk, a reference clock buffer and a calibration circuit. The main clock tree transmits a main operation clock to an internal node via serially-coupled buffers to form a local clock at an internal node. The reference clock buffer transmits a main reference clock via the reference clock trunk to form a reference clock at a terminal node. The calibration circuit compares phases of the local clock and the reference clock to accordingly generate a control signal, so the main clock tree can adjust phase of the local clock according to the control signal.