高速数据处理系统中的PCI总线接口设计

PCI Interface Design of High Speed Data Processing System

简单介绍了PCI(外部设备互连)总线的主要特点和系统设计。选择PLX公司的PCI9054专用芯片实现高速数据处理系统中的PCI总线接口的软硬件设计。PCI总线规范复杂,在规则、机械特性、电气特性等方面都有严格要求,分析了具体系统设计中需要解决的关键问题。开发基于PCI总线的高速数据处理系统能够大幅度提高数据传输速率,获得理想的系统性能,可为设计基于PCI接口的高速数据处理机提供一种借鉴方法。

Main characteristics and system block diagram of PCI bus are introduced in this paper, software and hardware design of PCI interface on high speed data processing system are realized by PCI9054 chip of PLX corporation. Because of rule complexity of PCI bus and having strict request in aspect of regular, machine feature, electric feature, the key problems of specific system design are analyzed. High speed data processing system based on PCI bus can raise data transmission ratio and obtain ideal system performance. It can offer a reference method for design of high speed data processor based on PCI interface.