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. 10, 2012
Filed:
Nov. 07, 2008
Isao Kawamoto, Hyogo, JP;
Yoshiharu Watanabe, Osaka, JP;
Isao Kawamoto, Hyogo, JP;
Yoshiharu Watanabe, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
The memory access device includes: a plurality of command division sections provided for a plurality of masters; a plurality of inter-master arbitration sections provided for a plurality of banks; and a memory control section. Each of the command division sections divides a command issued by the corresponding master into a plurality of micro-commands when the access region of the command is over two or more banks among the plurality of banks, each of the micro-commands being a command accessing only one of the two or more banks, and gives each of the micro-commands to an inter-master arbitration section corresponding to the bank including the access region of the micro-command. Each of the inter-master arbitration sections arbitrates micro-commands given from the command division sections to select one. The memory control section selects one of a plurality of micro-commands selected by the inter-master arbitration sections to perform memory access.