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:
Sep. 24, 2002
Filed:
Apr. 07, 1999
Applicant:
Inventor:
Austin C. Dumbri, Easton, PA (US);
Assignee:
Agere Systems Guardian Corp., Orlando, FL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 3/102 ; G01R 3/128 ;
U.S. Cl.
CPC ...
G01R 3/102 ; G01R 3/128 ;
Abstract
An auxiliary BIST circuit is constructed in a primary chip to which a secondary chip is attached, thereby allowing testing of the secondary chip using the auxiliary BIST circuit. This allows direct test access to the secondary chip without the need for a separate BIST circuit to be included in the secondary IC chip and without using a primary BIST circuit of the primary IC chip to test the secondary chip.