| 摘要 |
PROBLEM TO BE SOLVED: To provide a memory access controller which guarantees performance needed for a master for issuing an access request with different responsiveness requested to a shared memory and can efficiently distribute the entire access rates of the shared memory without impairing an access rate to be allocated to another master. SOLUTION: An access request control part 11 is provided with an access request sorting part 21 for sorting whether an access request from a corresponding master device is a first type of a priority access request or a second type of an access request, a non-priority access request holding part 24 for temporarily holding a second priority access request, and an access request selecting part 23 for selecting the first type of an access request preferentially between the first type of an access request from the corresponding master device and the second type of an access request held by the access request holding means and outputting it to an arbitration means. COPYRIGHT: (C)2008,JPO&INPIT
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