Method and apparatus of arranging priority queue and arbitrating for memory access requests
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United States of America Patent
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Apr 6, 2010
Grant Date -
Apr 24, 2008
app pub date -
Dec 19, 2007
filing date -
Dec 12, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method and an apparatus of memory access request priority queue arbitration comprises sorting the requests into plurality of different priority levels firstly. The priority queues of different priority levels are arranged respectively according to the following steps: counting the cycles and latencies of each access request; counting the total cycles; comparing the latencies of each access request and total cycles respectively, if the total cycles is larger than the latency of a request, then arranging one more the same request in the priority queue, else executing the priority queue in order.
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