| 摘要 |
The present invention aims to provide an access control apparatus that can improve responsiveness to an access request of a processor compared with a conventional technology. The access control apparatus, which receives access requests from one or more regular masters and a irregular master and sequentially selects an access allowable target, calculates an amount of unused resources based on an amount of resources used by a regular master which makes an access request during a unit period and a maximum amount of resources to be used given to the regular master and manages it. The access control apparatus selects an access request of the irregular master as an access allowable target when the irregular master makes the access request during the unit period and an access based on the access request of at least one of the regular masters has not been executed, and a total of the managed amount of unused resources is equal to or larger than an amount of resources which is to be used based on the access request of the irregular master.
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