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:
May. 15, 2012
Filed:
Jan. 19, 2007
Tomohiko Kitamura, Osaka, JP;
Tomohiko Kitamura, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A main LSI includes a plurality of master circuits transmitting access requests to a SDRAM, and includes an input interface receiving an access request from a master circuit in a sub LSI. Further, the main LSI includes an arbitration circuit receiving the access requests from the internal master circuits and from the input interface, sequentially selecting, in accordance with a predetermined arbitration rule, a master circuit to be allowed to access the SDRAM, and determining output timings for addresses pertaining to the data transfers from the sequentially selected master circuits. The main LSI also includes an access signal generation circuit causing the sequentially selected master circuits to access the SDRAM in accordance with the corresponding output timings.