基于FPGA的备用数据传输总线协议的实现

摘要

在可靠性要求很高的场合,系统对外连接的通信接口一般都有主通信接口和备用通信接口,当主通信接口出现软件故障或者硬件故障的时候,还要保障设备间最基本的数据通信不能中断,就必须启动备用通信接口.现对一组自定义的备用数据传输总线协议在FPGA中的实现过程进行了设计、测试,最终达到了协议规定的各项功能.但作为自定义的协议,根据总线两端连接的设备的特点,还有可以继续改进和调整的地方.%In high reliability requirements occasion, the system which connected external communication interface generally has main communication interfaces and alternate communication interface. When the main communication interface software failure or hardware failure, it also guarantee the basic data communication devices can not be interrupted, you must start the backup communication interface. The article describes the design and implementation of a custom backup data bus protocol based on FPGA. Ultimately, it achieved all the features of the agreement. But as a custom protocol, according to the characteristics of the bus connected to both ends of the device, it can continue to improve and adjust.