公开(公告)号：US20160154452A1

公开(公告)日：2016-06-02

申请号：US14557895

申请日：2014-12-02

Applicant: ARM LIMITED

Inventor： Andreas HANSSON ,  Ashley John CRAWFORD ,  Michael Andrew CAMPBELL ,  Stephan DIESTELHORST

IPC: G06F1/32 ,  G06F13/24 ,  G06F9/44

CPC classification number: G06F1/3287 ,  G06F1/3275 ,  G06F9/4418 ,  G06F13/24 ,  Y02D10/13 ,  Y02D10/14

Abstract: A system and method are provided for controlling the power mode of operation of a memory device. The system includes a processing device for performing processing operations on data, and a memory controller associated with the memory device, the memory device being used to store data for access by the processing device. The memory controller has power mode control circuitry to switch the memory device between different power modes of operation. Further, an interrupt controller is configured to issue an event signal to the processing device to trigger performance of at least one processing operation. On issuing the event signal, the interrupt controller further initiates generation of a wakeup stimulus signal to the power mode control circuitry, and the power mode control circuitry is then arranged to determine whether to change the power mode of operation of the memory device in dependence on the wakeup stimulus signal. By such an approach, the wakeup stimulus signal can provide an early trigger to the power mode control circuitry to exit the memory device from at least one low power mode of operation in anticipation of the performance of the at least one processing operation by the processing device requiring data to be accessed in the memory device.

Abstract translation: 提供了一种用于控制存储器件的功率工作模式的系统和方法。 该系统包括用于对数据执行处理操作的处理装置，以及与存储装置相关联的存储器控​​制器，该存储装置用于存储数据以供处理装置访问。 存储器控制器具有电源模式控制电路，以在不同的功率工作模式之间切换存储​​器件。 此外，中断控制器被配置为向处理设备发出事件信号以触发至少一个处理操作的执行。 在发出事件信号时，中断控制器进一步向功率模式控制电路启动唤醒激励信号的产生，然后将功率模式控制电路设置为根据以下方式确定是否改变存储器件的功率工作模式 唤醒刺激信号。 通过这种方法，唤醒激励信号可以提供早期的触发，使得功率模式控制电路从预期的至少一个低功率操作模式退出存储器件，以期预期处理设备执行至少一个处理操作 要求在存储设备中访问数据。

公开(公告)号：US20140149653A1

公开(公告)日：2014-05-29

申请号：US13684700

申请日：2012-11-26

Applicant: ARM LIMITED

Inventor： Anirruddha Nagendran UDIPI ,  Ali SAIDI ,  Andreas HANSSON ,  Christopher EMMONS

IPC: G06F12/02 ,  G11C11/406

CPC classification number: G06F12/0292 ,  G06F12/0238 ,  G06F12/06 ,  G06F12/0646 ,  G06F12/08 ,  G11C7/04 ,  G11C11/40622 ,  G11C11/40626 ,  G11C11/408

Abstract: An apparatus for processing data 2 includes a memory 4 having a plurality of memory regions 28 to 38. A mapping controller 56 applies a variable mapping to map memory addresses of access requests to different regions within the memory 4. The mapping controller varies the mapping applied in dependence upon both one or more memory behavioral parameters indicative of behavioral characteristics of the different regions and one or more access behavioral parameters indicative of behavioral characteristics of an access request to be mapped. The memory behavioral parameters may include the temperature of the regions and/or the refresh period of the regions. The access behavior able parameters may include the quality of service level, the access frequency, the access volume and/or the identity of the source of the access request.

Abstract translation: 一种用于处理数据2的装置包括具有多个存储器区域28至38的存储器4.映射控制器56应用可变映射将访问请求的存储器地址映射到存储器4内的不同区域。映射控制器改变应用的映射 依赖于指示不同区域的行为特征的一个或多个存储器行为参数以及指示要映射的访问请求的行为特征的一个或多个访问行为参数。 存储器行为参数可以包括区域的温度和/或区域的刷新周期。 访问行为能力参数可以包括服务质量水平，访问频率，访问量和/或访问请求的来源的身份。