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:
Aug. 13, 2019
Filed:
Dec. 23, 2016
Ati Technologies Ulc, Markham, CA;
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Joyce Cheuk Wai Wong, Toronto, CA;
Dragoljub Ignjatovic, Toronto, CA;
Mikhail Rodionov, Richmond Hill, CA;
Ljubisa Bajic, Toronto, CA;
Stephen V. Kosonocky, Fort Collins, CO (US);
Steven J. Kommrusch, Fort Collins, CO (US);
ATI Technologies ULC, Markham, CA;
Advanced Micro Devices, Inc., Santa Clara, CA (US);
Abstract
An output clock frequency of an adaptive oscillator circuit changes in response to noise on an integrated circuit power supply line. The circuit features two identical delay lines which are separately connected to a regulated supply and a droopy supply. In response to noise on the droopy supply, the delay lines cause a change in the output clock frequency. The adaptive oscillator circuit slows down the output clock frequency when the droopy supply droops or falls below the regulated supply. The adaptive oscillator circuit clamps the output clock frequency at a level determined by the regulated supply when the droopy supply overshoots or swings above the regulated supply.