Patent ID: 7836235
Filing Date: 2010-11-16
Classification: H04L

Abstract:
1. A resource management device in a system in which a plurality of masters share at least one resource, the device comprising: an access request arbitration section for arbitrating access requests from the plurality of masters; a data amount management section for managing accessible amounts passing between the plurality of masters and the resource with respect to each of the plurality of masters; and a resource control section for controlling passing of data between a master granted access by the access request arbitration section and the resource, wherein the access request arbitration section executes periodic arbitration of issuing access permission to any of the plurality of masters at fixed-interval arbitration timing and arbitrary arbitration of issuing access permission to a master among the plurality of masters presenting an access request amount that does not exceed the accessible amount managed by the data amount management section at any timing, and when an access by a first master of the plurality of masters is permitted at the periodic arbitration by the access request arbitration section, the data amount management section determines, from an accessible amount for the first master and an access request amount of the first master, an accessible amount for the first master at the arbitrary arbitration in a next cycle.