VPX总线规范将高速串行总线兼容到系统架构中来,在嵌入式领域有着广泛的应用前景。文中对VPX总线3U、6U模块和背板的基本规范进行说明和分析,并在此基础上给出一种基于VPX总线的嵌入式系统的实现方案。模块设计采用PowerPC MPC8641D与RapidIO交换器Tsi577的结合,背板设计采用全网状拓扑结构,支持模块之间高速点对点通讯。强大的数据处理和数据交换能力是新一代雷达军用综合信息处理系统的发展趋势。%High speed serial bus is compatible in the architecture of VPX bus specification.VPX bus has extensive application prospect in high-performance embedded computing area.The 3U and 6U module and backboard of chassis are described and analyzed,and a project of embedded system base on VPX bus is also shown in this paper.The module is designed with PowerPC MPC8641D and RapidIO switch Tsi577.The backboard is designed with mesh topology architecture,which supports high speed point to point communication.The powerful ability of data processing and data exchange is a trend of military information processing system of radar.
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