| 摘要 |
PROBLEM TO BE SOLVED: To provide a memory access arbitration device for accurately controlling average access performance of clients. SOLUTION: An arbitration part 11 arbitrates memory access requests REQ1, REQ2', REQ3 from the clients 1-3 (21-23) according to priority. A priority adjusting part 12 asserts an REQ2_LOW signal for just a predetermined period from issuing the REQ2 from the client 2 (22). While asserting the REQ2_LOW signal, an AND circuit 13 masks the client 2(22) from the REQ2. By this, a minimum access frequency of the client 2(22) can be guaranteed, and arbitration standby time of the client 3(23) with lower priority can be suppressed. COPYRIGHT: (C)2007,JPO&INPIT
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