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公开(公告)号:US20080148108A1
公开(公告)日:2008-06-19
申请号:US12033910
申请日:2008-02-20
CPC分类号: G06F13/1673 , G06F9/3004 , G06F9/30087 , G06F9/383 , G06F9/3834
摘要: Separate handling of read and write operations of Read-Modify-Write Commands in an XDR™ memory system is provided. This invention allows the system to issue other commands between the reads and writes of a RMW. This insures that the dataflow time from read to write is not a penalty. A RMW buffer is used to store the read data and a write buffer is used to store the write data. A MUX is used to merge the read data and the write data, and transmit the merged data to the target DRAM via the XIO. The RMW buffer can also be used for scrubbing commands.
摘要翻译: 提供了在XDR(TM)存储器系统中单独处理读取 - 修改 - 写入命令的读取和写入操作。 本发明允许系统在RMW的读取和写入之间发出其他命令。 这确保从读取到写入的数据流时间不是一个惩罚。 使用RMW缓冲器来存储读取的数据,并且使用写入缓冲器来存储写入数据。 使用MUX来合并读取数据和写入数据,并通过XIO将合并的数据发送到目标DRAM。 RMW缓冲区也可用于擦除命令。