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. 29, 2008
Filed:
Nov. 30, 2004
Applicants:
Mie Tonosaki, Kawasaki, JP;
Tomoyuki Okawa, Kawasaki, JP;
Inventors:
Mie Tonosaki, Kawasaki, JP;
Tomoyuki Okawa, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/06 (2006.01); G11C 7/10 (2006.01); G11C 7/22 (2006.01); G11C 11/4195 (2006.01); G11C 11/4197 (2006.01);
U.S. Cl.
CPC ...
Abstract
A circuit for driving and controlling a second cache that is incorporated in a processor and comprises a plurality of RAM. The circuit comprises a second-cache control unitA and a chip-enable control unit. The second-cache control unitA receives an access request for an access to the second cache and designates some of the RAMs, which need not operate, in accordance with the type or address of the access request, or both. The chip-enable control unitoutputs an intra-macro stop-instructing signal to the RAMs that have been designated by the second-cache control unitA.