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:
Sep. 18, 2001
Filed:
Apr. 20, 1999
Hiroyuki Fujiyama, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A processor,A comprises a processor core,connected to an internal bus,an interface circuit,connected between the internal bus,and an external bus,and an interface circuit,connected between the internal bus,and an external bus,To simplify bus arbitration, the interface circuit,holds an address on the internal bus,in an first address buffer register,in response to an internal address strobe signal *ASi, judges based on the address value whether or not an access request is performed, outputs a bus request signal *PREQ, outputs the content of the first address register,onto the external bus,after getting a bus ownership, thereafter provides the data on the external bus,to the internal bus,and provides an internal ready signal *RDYi to the processor core,The processor may comprise a between-interface control circuit to enable to connect between the external circuits,and,in common.