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:
Jul. 04, 2017
Filed:
Jul. 14, 2016
Apple Inc., Cupertino, CA (US);
Manu Gulati, Saratoga, CA (US);
Suhas Kumar Suvarna Ramesh, Santa Clara, CA (US);
Venkata Ramana Malladi, Santa Clara, CA (US);
Thomas H. Huang, Campbell, CA (US);
Rakesh L. Notani, Sunnyvale, CA (US);
Robert E. Jeter, Santa Clara, CA (US);
Kai Lun Hsiung, Fremont, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
Techniques are disclosed relating to feedback-controlled oscillators (e.g., phase-locked loops) arranged in two or more levels. In some embodiments, in a relatively higher-frequency mode, a first level feedback-controlled oscillator provides reference signals to one or more second level feedback-controlled oscillators that in turn generate output clock signals to clock sequential circuitry. In some embodiments, in a relatively lower-frequency mode, the first level feedback-controlled oscillator bypasses the second level feedback-controlled oscillators and provides output clock signals directly to sequential circuitry (without using any intervening feedback-controlled oscillators).