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:
Apr. 01, 2003
Filed:
Nov. 04, 1999
Applicant:
Inventors:
James L. Lewandowski, Plainsboro, NJ (US);
Frank P. Higgins, Trenton, NJ (US);
Assignee:
Agere Systems Inc., Allentown, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 2/900 ; G06F 1/100 ;
U.S. Cl.
CPC ...
G11C 2/900 ; G06F 1/100 ;
Abstract
A content-addressable memory (CAM) has a memory array for storing data, the memory array having E entries each having N data bits and a valid bit. The functionality of the CAM is tested by testing the memory array for read/write functionality. The functionality of a matching function, a priority encoding function, a match flag function, and a multiple match flag function of the CAM is tested. The functionality of an invalidate data function and a valid data restricted search function is also tested.