CAN总线是一种最有前途的现场总线，因其优异性能而在工业控制、汽车电子、安防等方面得到广泛应用。设计CAN-bus通讯接口是很重要的一个环节，设备的正确运行与其密切相关。-CAN bus is one of the most promising field bus, because of their outstanding performance in industrial control, automotive electronics, security and so widely used. CAN-bus communication interface design is an important aspect of the right equipment to run closely related.