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:
Aug. 09, 2022

Filed:

Mar. 16, 2021
Applicant:

Cadence Design Systems, Inc., San Jose, CA (US);

Inventors:

Jagjot Kaur, Milpitas, CA (US);

William Scott Gaskins, Durham, NC (US);

Assignee:

CADENCE DESIGN SYSTEMS, INC., San Jose, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 30/333 (2020.01); G06F 30/30 (2020.01); G06F 30/32 (2020.01); G06F 30/396 (2020.01); G06F 119/12 (2020.01); G01R 31/3185 (2006.01); G01R 31/317 (2006.01);
U.S. Cl.
CPC ...
G06F 30/333 (2020.01); G06F 30/32 (2020.01); G01R 31/31704 (2013.01); G01R 31/318552 (2013.01); G01R 31/318583 (2013.01); G06F 30/396 (2020.01); G06F 2119/12 (2020.01);
Abstract

A system for optimizing scan pipelining may include a processor and a memory. The processor may generate and insert, based on prior analysis of the physical layout of the circuit, an optimized number of pipeline stages between a first block and a second block in a hardware test design, a first scan chain including at least one pipeline stage of a head pipeline stage or a tail pipeline stage. The processor may insert a plurality of flip-flops into the first scan chain. The processor may determine at least one clock to be used for the at least one pipeline stage, using the plurality of flip-flops so as to eliminate the need of a lockup element between the at least one pipeline stage and the plurality of flip-flops. The processor may generate, based on the at least one clock, a second scan chain that connects the at least one pipeline stage and the plurality of flip-flops.


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