基于Nios软核处理器的嵌入式系统设计  

Design of an embedded system based on the Nios soft-core processor

作　　者：左震[1] 黄芝平[1] 唐贵林[1] 董志[1] 

机构地区：[1]国防科学技术大学机电工程与自动化学院仪器系,长沙410073

出　　处：《电子测试》2008年第11期55-59,64,共6页Electronic Test

摘　　要：利用软核处理器构造嵌入式系统的突出优点就是可编程性、可裁减性、易操作性、灵活性以及低成本,这些特点都使得软核处理器具有很强的竞争力。Nios软核处理器集成在FPGA芯片内部,是目前最流行的软核处理器之一,本文给出了基于Nios软核处理器的嵌入式系统的设计方法。文章研究了Nios软核处理器的结构和特点,提出了系统硬件平台的设计方案,讨论了系统的SOPC集成设计,分析了系统的软件设计方法,总结了系统的启动流程,给出了系统的测试结果。实践证明,该嵌入式系统功能完整、集成度高、稳定可靠、简洁实用,具有可编程性、可裁减性、易操作性、灵活性以及低成本等特点,具有广泛的应用价值。The embedded system based on a soft-core processor has the feature of programmable, tailorable, useable, flexible, and low-cost. These characteristics make soft-core processors very competitive. The Nios processor is embedded in a FPGA chip and currently it is one of the most popular soft-core processors. This paper presents the design method of the embedded system based on the Nios soft-core processor. The architecture and characteristics of the Nios pro- cessor are studied. The design scheme of the hardware platform is put forward. The SOPC de- sign of the system is discussed. The software design method of the system is analyzed. The boot sequence of the system is concluded. The test results of the system are given. It is proved that this embedded system is fully-functional, highly-integrated, reliable, stable, simple, practical and has the feature of programmable, tailorahle, useable, flexible, and low-cost. This embedded system is believed to have a promising application value.

关 键 词：NIOS 软核 片上可编程系统 嵌入式系统 

分 类 号：TP332[自动化与计算机技术—计算机系统结构]