用CPLD/FPGA实现Nios II嵌入式系统配置技术  

Implementation of Nios ll Embedded System with CPLD/FPGA

作　　者：王建芳[1] 夏清国[1] 

机构地区：[1]西北工业大学计算机学院,陕西西安710072

出　　处：《计算机测量与控制》2008年第2期185-187,共3页Computer Measurement &Control

摘　　要：对Nios II嵌入式系统的特点和现有的配置技术进行了研究,设计了一种利用CPLD配置控制器实现加电时自动对嵌入式系统进行配置的新方案;该方案首先是Flash存储中读取配置文件信息,然后经过并串转换后对基于Nios ll的嵌入式可编程逻辑器件FPGA进行系统配置,同时该方案不仅极大地提高了系统性能和降低了总体成本,而且更方便于系统配置文件的升级。After the characteristics of the Nios II embedded system and the configuration of the existing technology are researched, a new approach is designed using a CPLD configuration controller to configure automatically the embedded system when powering up. Firstly, reading the information of the configuration files. Then parallel to configure the system based on Nios Ⅱ Embedded Programmable Logic Device FPGA. Meanwhile the program also can achieve configuration files online upgrade, lastly, the approach is tested, it not only enormously improves the performance and reduces the costs , but also enables more easily the update of the system configuration files.

关 键 词：嵌入式系统 配置 现场可编程门阵列 复杂可编程逻辑器件 FLASH 

分 类 号：TP303[自动化与计算机技术—计算机系统结构]