基于异构多核系统中跨时钟域的解决方案  

A Method to Solve Frequency Inconsistent Between Heterogeneous Multi core Processor and System Bus

作　　者：王伟平[1] 胡越黎[1,2] 杨文荣[1] 胡云生[1] 诸安骥 

机构地区：[1]上海大学微电子研究与开发中心,上海200072 [2]机电工程与自动化学院,上海200072

出　　处：《计算机测量与控制》2015年第10期3465-3467,共3页Computer Measurement &Control

摘　　要：随着集成电路的集成度与性能的不断发展,芯片的功耗问题已经变的十分严重,功耗带来的挑战日益突出;异构多核动态调频架构是目前研究低功耗的主流方向;SOC系统当中同一时刻只有一个处理器能够控制总线,其它处理器则处于等待状态,异构多核动态调频架构能够通过降低不控制总线的处理器频率来达到降低功耗的目的;异构多核领域的处理器和总线跨时钟域解决方案,可以运用在异构多核动态调频(DFS)架构当中;目前手持终端设备越来越强调功耗的重要性,因此异构多核领域的处理器和总线跨时钟域解决方案将有非常好的应用前景;该方案通过在处理器和AMBA总线之间添加FIFO以及一些复杂的算法,达到消除亚稳态和正常通信的目的;最终,通过仿真发现任意调节处理器的工作频率都能满足传输协议;证明该方案能在异构多核动态调频架构中运用。With the development of integration and performance of SOC, SOC has reached a hundred watt power consumption. Power consumption challenges increasingly prominent. Heterogeneous multi--core architecture used dynamic frequency is the main direction of the of low power consumption. There is only one processor to control the bus on the SOC system at the same time, while other processor at wait state, heterogeneous multi--core architecture can reduce the dynamic frequency of processor which not control bus to achieve the purpose of reducing power consumption. This paper puts forward a clock domain processor and a heterogeneous multi--core bus field cross scheme, it can be used in heterogeneous multi core dynamic frequency modulation （DFS） architecture. The importance of handheld devices are more and more emphasis on power consumption, so the heterogeneous multi--core processor and bus in the field of cross clock domain solution will have a very good application prospect. This scheme by adding FIFO and some complex algorithm between the processor and the AMBA bus, to eliminate the metastable state and achieve normal communication purposes. Finally, the simulation shows that the frequency adjustable processor can meet the transmission protocol. It is proved that this system can be used in heterogeneous multi--core architecture in dynamic frequency.

关 键 词：集成电路设计 AMBA 异构多核 FIFO 

分 类 号：TN47[电子电信—微电子学与固体电子学]