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:
Feb. 27, 2007
Filed:
Jul. 16, 2003
Tetsuya Fukuoka, Ome, JP;
Takeshi Miyazaki, Akishima, JP;
Katsuichi Tomobe, Ome, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
There is provided a semiconductor integrated circuit which assures sufficiently lower power consumption of a translation look-aside buffer without deterioration of operation rate performance thereof. In the translation look-aside buffer to convert logical address into physical address, a clock enable generating circuit is provided to stop the operation clock to be supplied to the tag memory and entry memory of the translation look-aside buffer while the virtual memory valid bit Vs of the status register indicating access to the virtual memory is '0', or while the cache-stall signal is outputted because of miss-hit in the cache, or when the access is issued with the same logical page address to the area other than the boundary area of the address range.