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    • 6. 发明授权
    • Arbitrated access to memory shared by a processor and a data flow
    • 仲裁访问由处理器和数据流共享的内存
    • US08412891B2
    • 2013-04-02
    • US12916668
    • 2010-11-01
    • Masayuki DemuraHisato MatsuoKeisuke Tanaka
    • Masayuki DemuraHisato MatsuoKeisuke Tanaka
    • G06F12/12G06F13/18G06F13/34
    • G06F13/161G06F13/1673Y02D10/14
    • Memory access arbitration allowing a shared memory to be used both as a memory for a processor and as a buffer for data flows, including an arbiter unit that makes assignment for access requests to the memory sequentially and transfers blocks of data in one round-robin cycle according to bandwidths required for the data transfers, sets priorities for the transfer blocks so that the bandwidths required for the data transfers are met by alternate transfer of the transfer blocks, and executes an access from the processor with an upper limit set for the number of access times from the processor to the memory in one round-robin cycle so that the access from the processor with the highest priority and with a predetermined transfer length exerts less effect on bandwidths for data flow transfers in predetermined intervals between the transfer blocks.
    • 存储器访问仲裁允许共享存储器既用作处理器的存储器又用作数据流的缓冲器,包括仲裁器单元,其顺序地对存储器的访问请求进行分配,并在一个循环周期中传送数据块 根据数据传输所需的带宽,设置传输块的优先级,使得通过传输块的交替传送来满足数据传输所需的带宽,并且执行对处理器的访问,其具有为 在一个循环周期中从处理器到存储器的访问时间,使得来自具有最高优先级并且具有预定传送长度的处理器的访问对传输块之间的预定间隔中的数据流传输的带宽的影响较小。