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:
Nov. 03, 2009
Filed:
Mar. 16, 2005
Applicant:
Sandeep Bhatia, San Jose, CA (US);
Inventor:
Sandeep Bhatia, San Jose, CA (US);
Assignee:
Cadence Design Systems, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/28 (2006.01); H03K 3/289 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and system for clock skew independent scan chains. In one embodiment, a method comprises connecting a plurality of mux-D scan registers in a chain configuration, wherein a first mux-D scan register of the plurality is associated with a first clock network, and a second mux-D scan register of the plurality is associated with a second clock network. The plurality of mux-D scan registers have a scan mode. The first mux-D scan register and the second mux-D scan register become clock skew independent by controlling a scan-enable signal and a clock signal.