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NiosⅡ是Altera公司推出的第二代IP软核处理器,它与其他IP核构成了SOPC系统的主要部分。文中利用SOPC技术,配合NiosⅡ软核处理器,实现了一种高速的、软件灵活配置的片上IIR数字滤波算法,同时给出了硬件系统设计方法和软件系统的设计流程,实现了IIR数字滤波器的软硬件协同设计。在建立的SOPC系统上,软件可定制多种滤波算法,实现系统灵活的要求,实验结果表明,其计算速度有极大的提高。
Nios II is Altera’s second-generation IP soft-core processor, which forms a major part of the SOPC system with other IP cores. In this paper, using SOPC technology, with the Nios Ⅱ soft-core processor, a high-speed, flexible software configuration on-chip IIR digital filtering algorithm, and given the hardware system design methods and software system design flow, the realization of the IIR digital filter Hardware and software co-design. In the established SOPC system, the software can be customized a variety of filtering algorithms to achieve the system’s flexible requirements, the experimental results show that the computational speed has greatly improved.