基于ARM Cortex-M3核的SoC架构设计及性能分析

摘要

主要研究了基于ARM Cortex-M3核的SoC设计方法及不同架构对芯片整体性能的影响.首先从Cortex-M3的结构特点尤其是总线结构特点出发,分析了基于该核的SoC架构设计的要点.然后通过EEMBC的CoreMark程序,对实际流片的一款Cortex - M3核芯片进行了性能测试,并与STM32F103 MCU的测试结果进行了对比,通过实例说明了不同芯片架构对性能的影响.最后,对影响SoC芯片性能的因素,包括芯片架构、存储器速度、工艺、主频等进行了分析和总结.%The method of how to design SoC with ARM Cortex - M3 core is carefully studied, and the relationship between chip architecture and performance is also analyzed. Firstly, the essentials of SoC design with Cortex ?M3 are presented based on the core's structural features, especially the bus structure feature. Then, with the help of CoreMark program from EEMBC, the performance of a chip with Cortex 桵3 core is tested after tape 梠ut, and also compared with the test results of STM32F103 MCU in order to illustrate different architectures' effects on chips' performance. At last, the factors which affect the performance of SoC, including chip architecture, memory speed, process and frequency, are analyzed and summarized.