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:
Mar. 21, 2006
Filed:
Oct. 07, 2003
Ryohei Higuchi, Tokyo, JP;
Ryohei Higuchi, Tokyo, JP;
Renesas Technology Corp., Tokyo, JP;
Abstract
Two bus masters share an external device. One particular bus master has an arrangement for issuing a data pre-read instruction, at the time of issuing a data read request. Upon reception of the data read request accompanying with the data pre-read instruction issued by the particular bus master, an external device controller instructs an external address generator to continuously generate an address for performing normal readout this time, and an address for the next pre-read, and executes readout by the next pre-read address, provided that when the normal readout this time is finished, the bus master has not issued a data read request. The normal data read based on the normal readout address this time is held in a data holder, and the pre-read data read based on the next pre-read address is stored in a pre-read data storage.