公开(公告)号：US20160034406A1

公开(公告)日：2016-02-04

申请号：US14449689

申请日：2014-08-01

Applicant: ARM Limited

Inventor： Andreas HANSSON ,  Aniruddha Nagendran UDIPI ,  Neha AGARWAL

IPC: G06F13/18 ,  G11C7/10 ,  G06F13/16

Abstract: A memory controller and method are provided for controlling a memory device to process access requests issued by at least one master device, the memory device having a plurality of access regions. The memory controller has a pending access requests storage that buffers access requests that have been issued by a master device prior to those access requests being processed by the memory device. Access control circuitry then issues control commands to the plurality of access regions in order to control the memory device to process access requests retrieved from the pending access requests storage. A query structure is also provided that is configured to maintain, for each access region, information about the buffered access requests in the pending access requests storage, and the access control circuitry references the query structure when determining the control commands to be issued to the plurality of access regions. Such an approach enables significant performance and energy savings to be realized in control of the memory device, without requiring the contents of the pending access requests storage to be directly monitored by the access control circuitry.

Abstract translation: 提供了一种用于控制存储器设备以处理由至少一个主设备发出的访问请求的存储器控​​制器和方法，该存储器设备具有多个访问区域。 存储器控制器具有待处理的访问请求存储，其缓冲由存储设备处理的那些访问请求之前由主设备发出的访问请求。 然后，访问控制电路向多个访问区域发出控制命令，以便控制存储器设备处理从挂起的访问请求存储器检索的访问请求。 还提供了一种查询结构，其被配置为为每个访问区域维护关于未决访问请求存储器中缓冲的访问请求的信息，并且当确定要发布给多个访问请求的控制命令时，访问控制电路参考查询结构 的访问区域。 这种方法使得能够在控制存储器设备时实现显着的性能和能量节省，而不需要由访问控制电路直接监视未决访问请求存储的内容。