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:
Jan. 03, 2012

Filed:

Apr. 24, 2007
Applicants:

Takaharu Ishizuka, Kawasaki, JP;

Toshikazu Ueki, Kawasaki, JP;

Makoto Hataida, Kawasaki, JP;

Takashi Yamamoto, Kawasaki, JP;

Yuka Hosokawa, Kawasaki, JP;

Takeshi Owaki, Kawasaki, JP;

Daisuke Itou, Kawasaki, JP;

Inventors:

Takaharu Ishizuka, Kawasaki, JP;

Toshikazu Ueki, Kawasaki, JP;

Makoto Hataida, Kawasaki, JP;

Takashi Yamamoto, Kawasaki, JP;

Yuka Hosokawa, Kawasaki, JP;

Takeshi Owaki, Kawasaki, JP;

Daisuke Itou, Kawasaki, JP;

Assignee:

Fujitsu Limited, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/00 (2006.01); G06F 13/00 (2006.01); G06F 13/28 (2006.01);
U.S. Cl.
CPC ...
Abstract

A request issued by the CPU is output from the local arbiter by way of the CPU bus and the CPU-issued request queue. The cache replacement request loop-back circuit determines at the loop-back determination circuit whether the outputted request is a cache replacement request or not. A request other than a cache replacement request is output onto the local bus. A cache replacement request is output to the selector and sent to the request handling section when there is no valid request on the global bus.


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