摘要
在工程实践中,如何实现上位机与Qsys系统之间的无缝链接,一直是设计中的重点。针对以上问题,本文提出了基于Avalon总线的PCI从设备IP核的设计方法,以嵌入式IP软核的形式取代原有专用接口芯片。设计按照自顶而下设计流程,首先给出了PCI从设备的RTL级模块划分,并详细设计了其mealy型状态机,然后将Avalon总线与PCI总线实现片内互联,最终开发了一个具有自主知识产权的IP软核。该IP核符合PCI 2.2标准,可进行资源自动配置,实现数据正确读写,还实现了PCI总线与Nios II处理器之间的数据传输,验证了该设计的正确性和可行性。
How to realize the seamless link between the PC and the Qsys system has always been the focus of a design in the engineering practice.In view of the above problem,this paper presents an IP core design of PCI-slave interface based on Avalon bus,which replaces the original design method of using special interface chip,in form of embedded IP core.The design is according to the top-down design process,firstly gives the RTL level module partition of the PCIslave interface,and carefully designs the mealy type of state machine.Then completes the on-chip interconnection between Avalon bus and PCI bus.Finally develops an IP soft core with independent intellectual property rights,and validates the feasibility of the design in engineering practice.
出处
《电子测量技术》
2016年第2期142-146,共5页
Electronic Measurement Technology
