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:
Apr. 21, 2025

Filed:

Dec. 05, 2023
Applicant:

Synopsys, Inc., Sunnyvale, CA (US);

Inventors:

Emil Gizdarski, Cupertino, CA (US);

Fadi Maamari, Mountain View, CA (US);

Assignee:

Synopsys, Inc., Sunnyvale, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/3185 (2005.12);
U.S. Cl.
CPC ...
G01R 31/318536 (2012.12); G01R 31/318541 (2012.12); G01R 31/31855 (2012.12);
Abstract

The present disclosure describes systems and methods for forming scan chains. The system includes a memory and a processor communicatively coupled to the memory. The processor receives a circuit design that includes a plurality of scan cells. The plurality of scan cells includes a first scan cell and a first set of scan cells coupled logically to the first scan cell. The processor forms the plurality of scan cells into a first scan chain such that the first set of scan cells are placed outside an extended neighborhood of the first scan cell. The extended neighborhood of the first scan cell includes (i) scan cells that are downstream of the first scan cell in the first scan chain and (ii) a scan cell that is adjacent to and upstream of the first scan cell in the first scan chain.


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