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:
Oct. 03, 2023

Filed:

Oct. 12, 2022
Applicant:

Cisco Technology, Inc., San Jose, CA (US);

Inventors:

Michael G. Curcio, Cary, NC (US);

Kent H. Hoult, Lunenburg, MA (US);

Kevin T. Mortimer, Bolton, MA (US);

Assignee:

Cisco Technology, Inc., San Jose, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 7/58 (2006.01); H03K 3/84 (2006.01); H03K 3/03 (2006.01);
U.S. Cl.
CPC ...
G06F 7/582 (2013.01); G06F 7/588 (2013.01); H03K 3/0315 (2013.01); H03K 3/84 (2013.01);
Abstract

An apparatus includes a carry chain circuit and a detector circuit. The carry chain circuit includes a plurality of stages. Each stage of the plurality of stages includes a plurality of lookup table elements coupled in sequence. The carry chain circuit propagates a clock signal through the plurality of lookup table elements of the plurality of stages. The detector circuit determines, based on a value of the clock signal stored by a final lookup table element of each stage of the plurality of stages, which stage of the plurality stages contains an edge of the clock signal. The detector circuit then outputs a zero if the determined stage is assigned to a first group of the plurality of stages and a one if the determined stage is assigned to a second group of the plurality of stages.


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