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:
Apr. 15, 2008
Filed:
Jan. 16, 2007
Kenichi Kawaguchi, Kobe, JP;
Kenichi Kawaguchi, Kobe, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A bus bridge is connected to a primary bus and a secondary bus, and relays data between a master and a target which are each connected to a different one of the primary and secondary buses. The bus bridge includes a primary bus interface, a secondary bus interface, a data FIFO, and a register block. The register block, which can be written by the master, includes two registers corresponding to the primary and secondary buses. Relay information showing the number of entries of data to be relayed from the target to the master is registered in a register corresponding to a bus to which the target is connected. In a read transaction, the primary bus interface or the secondary bus interface reads data from the target until data of the amount shown by the registered relay information is stored in the data FIFO.