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:
Jan. 09, 2007
Filed:
Oct. 17, 2003
Isao Minematsu, Hyogo, JP;
Hisakazu Sato, Hyogo, JP;
Isao Minematsu, Hyogo, JP;
Hisakazu Sato, Hyogo, JP;
Renesas Technology Corp., Tokyo, JP;
Abstract
An address range of consecutive instructions stored in an instruction buffer is set in an address table. A determination unit determines whether an instruction address outputted from a CPU core falls within the address range set in the address table. A selector selectively outputs an instruction code stored in the instruction buffer and an instruction code stored in an instruction cache in accordance with a determination result of the determination unit. Therefore, in the case where the CPU core fetches an instruction stored in the instruction buffer, an access cycle is guaranteed and an operation of the instruction cache is stopped, thereby making it possible to improve power efficiency.