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.

Date of Patent:
Jul. 09, 2019

Filed:

Jul. 19, 2018
Applicant:

Cirrus Logic International Semiconductor Ltd., Edinburgh, GB;

Inventors:

Dario San Martin Molina, Granada, ES;

Gordon James Bates, Edinburgh, GB;

Assignee:

Cirrus Logic, Inc., Austin, TX (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 23/00 (2006.01); H03K 3/03 (2006.01); H03K 23/66 (2006.01); G06F 1/04 (2006.01); H03L 7/197 (2006.01); H03L 7/099 (2006.01); H03K 23/54 (2006.01);
U.S. Cl.
CPC ...
H03K 3/0315 (2013.01); G06F 1/04 (2013.01); H03K 23/00 (2013.01); H03K 23/54 (2013.01); H03K 23/667 (2013.01); H03L 7/0995 (2013.01); H03L 7/1974 (2013.01);
Abstract

There is disclosed configurable frequency-divider circuitry for generating a target signal of a frequency Fr/Di based on a reference signal of a frequency Fr, where Di is an integer divider ratio, the frequency-divider circuitry comprising: N divider stages organised into a ring, each stage configured to receive an input signal and generate an output signal, with the output signal of each successive stage in the ring being the input signal of the next stage in the ring, wherein: the ring of stages is controlled by the reference signal so that the output signals are governed by the reference signal; the target signal is one of the output signals or a signal derived therefrom; and at least one of the stages is a configurable stage, whose mode of operation is configurable based on a configuration signal to configure the value of Di.


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