S400β模式1394B总线接口单元设计与实现

S400β Mode 1394B Bus Interface Unite Design and Implementation

新一代航空电子系统大量采用分布式智能终端,大容量、高速、实时图像数据成为其显著特征。IEEE 1349B是广泛应用的高速串行总线,具有传输速率高、可靠性好、扩展性强的优点,是目前实现数字图像及视频传输的首选方案之一。文章基于PCI架构设计出S400β模式的1349B总线接口单元。基于Vxworks操作系统开发出了该接口单元的驱动和主机PCI接口驱动开发。通过1394B总线标准测试设备的验证,该接口单元可以实现400Mb/s的高速数据实时传输,证明了该接口单元的可行性和可靠性,对嵌入式高速IO设计具有参考价值。

Many distributed and intelligent terminals are adopted in the new generation o f aeronautics electronic sy stem,tbe lar- ge- capacity〉high speed〉real-time image data has became the important characteristic. IEEE 1349B is anhigh-perfonnance seri-al bus with Hie excellence o f high transmission, reliability and expansibility. It can be considered as one o f the preferred solu-tions for digital graph and video communication. The inter＆ce unite based on PCI architecture is developed. On this unite, the 1349B driver and the host PCI driver based on Vxworks operating system are designed. Finally, die test results show that this 1349B interfaces unite can obtain bus speed 400Mb/ s. This proves that the design o f high-speed real-time data transmission sys-tem is feasible and realizable. Also, fhis design has certain reference value to other similar high-speed IO research.