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:
Jan. 11, 2000
Filed:
May. 27, 1998
Ronald F Talaga, Jr, Austin, TX (US);
Russell Hershbarger, Nevada City, CA (US);
James M Buchanan, Austin, TX (US);
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Abstract
The present invention encompasses the use of multiple feedback paths in a clock source for an integrated circuit device to maintain phase lock to an external clock. It is further contemplated by the present invention that feedback paths are provided from the internal clock distribution path and from a matching path that approximates the delay of the clock distribution path. The matching path may comprise a delay locked loop. Feedback from the clock distribution path is used in normal operation and feedback from the matching path is used when the internal clock distribution path is disabled. The clock source of the present invention also may implement power management functions.