动态可配置片上数据存储单元设计  

Design of Dynamically Configurable On-chip Data Storage Unit

作　　者：张康[1] 王党辉[1] 黄小平[1] 

机构地区：[1]西北工业大学计算机学院,西安710129

出　　处：《计算机测量与控制》2014年第3期869-871,共3页Computer Measurement &Control

基　　金：国家自然科学基金项目(61272122;61003037;61173047);西北工业大学基础研究基金(JC201256;JC201212)

摘　　要：作为嵌入式处理器的关键部件,片上Cache的功耗能占到整个处理器功耗的50%以上;一个设计良好的片上数据存储单元能有效降低处理器功耗,并且提高整个系统的性能;便签式存储器(Scratchpad memory,SPM)具有占用片上面积少、功耗低和访问时延确定等优点,因此成为嵌入式系统领域的研究热点;以SPM为基础,介绍了一种动态可配置片上数据存储单元的设计方法,并提出SPM操作函数,方便应用程序开发;实验结果表明,该片上数据存储单元能耗降低超过35%,测试程序运行时间平均减少了20.3%。As a critical component of the embedded processor, the power consumption of on-chip Cache can account for more than 50%of the whole power dissipation of the processor. A well-designed on-chip data storage unit can effectively reduce the power consumption of the processor and improve the performance of the whole system. Scratchpad memory （SPM） possesses a number of advantages including the small on-chip area, low power consumption, the certain access delay and so on, therefore becomes the hotspot in the field of embedded sys- tem. This paper introduces a novel way of designing dynamically configurable on-chip data storage unit based on SPM, and proposes SPM op- erating functions which facilitate development of applications. Experiments illustrate that the reduction in the power consumption of the on- chip data storage unit is more than 35%, the average running time of test programs is decreased by 20. 3%,

关 键 词：动态可配置 CACHE SPM 状态机 SPM操作函数 

分 类 号：TP303[自动化与计算机技术—计算机系统结构]