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介绍了ＣａｎＢｕｓ（ＣＡＮ总线）的基本原理、总线结构、通讯协议、数据格式，并以ｐｈｉｌｉｐｓ公司的８２Ｃ２００、８２Ｃ２５０接口芯片为例，给出了ＣＡＮ总线接口电路的实现方法和软件控制程序编程示例。
The basic principle, bus structure, communication protocol and data format of CanBus (CAN bus) are introduced. Taking the 82C200 and 82C250 interface chip of philips company as an example, the realization method of CAN bus interface circuit and programming example of software control program are given.