基于一种微处理器的SOC设计

SOC Design Based on the Leon3 Processor

针对深空探测系统和导航系统SOC设计高安全性、快运算速度和强容错能力的需求,文中主要讨论一种微处理器Leon3在高性能、高可靠性、可扩展性等方面的特征,构建一个适合深空探测和导航系统的片上系统,提出改善其运算性能的有效方法,实现基于Leon3的SOC设计。同时指出针对该微处理器进行Linux内核移植的特殊点,提出一种简单有效的应用程序的固化方法;给出测试程序调试的运行结果,并对实验数据进行分析。系统比常规系统运算性能提高了10倍左右。最后文中提出有关系统的集成电路设计的要点和注意事项。

To meet the demands of the deep space exploration and navigation systems that require high-security,fast com-puting speed and strong fault-tolerant capabilities,the high performance,configuration and reliability of the microprocessor are mainly discussed in this paper.The author builds up a system on chip suitable for the deep space exploring and navigation system,offers an effective method to improve the computing performance,and designs a SOC based on Leon3.There are so many differ-ences between Leon3 and other processors that the implementation of this system has several technical difficulties.The difficul-ties are resolved in this paper.In addition,an efficient method of improving the computing performance of the system is pre-sented.The author points out the particularity of the transplant and solidification of Linux operation system,gives out a simple method to solid the application software and provides the testing data.The system is ten times faster than popular systems.At last,the main point of integrated circuit designs of leon3 system on chip is presented.