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    • 4. 发明授权
    • Memory system and data transfer method
    • 内存系统和数据传输方式
    • US08832333B2
    • 2014-09-09
    • US13237396
    • 2011-09-20
    • Hirokazu Morita
    • Hirokazu Morita
    • G06F13/00G06F13/16G06F3/06
    • G06F13/1673G06F3/0659
    • According to the embodiment, a memory system includes a first memory which includes a memory cell array and a read buffer, a second memory, a command queue, a command sorting unit, and a data transfer unit. The command sorting unit dequeues commands excluding a later-arrived command whose access range overlaps with an access range of an earlier-arrived command from the command queue. The data transfer unit performs a data preparing process of transferring data that is specified by dequeued read command and is read out from the memory cell array to the read buffer, a first data transfer of outputting the data stored in the read buffer, and a second data transfer of storing data that is specified by dequeued write command in the second memory. The data transfer unit is capable of performing the data preparing process and the second data transfer in parallel.
    • 根据实施例,存储器系统包括包括存储单元阵列和读取缓冲器,第二存储器,命令队列,命令分类单元和数据传送单元的第一存储器。 命令排序单元将除了稍后到达的命令(其访问范围与来自命令队列的早期到达命令的访问范围重叠)的命令排队。 数据传送单元执行数据准备处理,该数据准备处理将由出队读取命令指定的数据传送并从存储单元阵列读出到读取缓冲器,第一数据传送输出存储在读取缓冲器中的数据,第二个数据传送 在第二存储器中由出队写入命令指定的存储数据的数据传输。 数据传送单元能够并行执行数据准备处理和第二数据传送。