Memory system, access control method therefor, and computer program

摘要

A memory system includes: a memory that has plural banks; a memory controller that includes a request queue and a bank monitor and controls access to the memory; a master group including plural masters that can request access to the memory; and a system bus which is connected between the memory controller and the master group and in which an arbiter is arranged, wherein the request queue has a scheduling function for receiving access requests issued from the master group through the system bus and appropriately rearranging the received access requests and provides the arbiter with queue information, the bank monitor monitors information concerning respective banks of the memory and provides the arbiter with the bank information, and the arbiter arbitrates requests issued in parallel from the masters of the master group on the basis of the queue information and the bank information provided thereto and transmits the information to the memory controller as access control information.