基于时间触发FC终端接口的设计

摘要

High speed,high reliability and low latency make FC protocol the first choice for the next generation of the avionics network.But the event-triggered message transmission form makes the network lack time certainty.To improve the certainty of message transmission,we designed a time-triggered FC terminal interface.At the same time,the key modules of FC IP core,PCIE interface,the memory chip controller and the management module of send buffer were also designed.Finally,by use of the development tool ISE and Modelsim,we tested the interface by applying incentives.The result shows that BER of the interface is less than 10-12,and the eye jitter is controlled at 87.5 ps,which meet the requirements of design.%FC总线协议凭借其高速率、高可靠性以及低延迟,成为下一代航电网络的理想协议.但基于事件触发的消息传输形式,使得网络在时间确定性方面依然存在不足.为提高消息传输的确定性,设计实现了一种基于时间触发的FC终端接口,同时对其关键模块FC IP核、PCIE接口、存储芯片控制器以及发送缓存管理模块进行了详细的设计.最后在借助开发工具ISE和Modelsim,对设计的接口进行了测试.结果表明,该接口误码率小于10-12,眼图抖动控制在87.5 ps,满足设计要求.