本文从实际应用的角度出发,以我们做过的实验为基础,介绍了使用SIO可编程通信接口芯片实现HDLC(高级数据链路控制规程)通信方式的实验电路、接口控制信号的使用及SIO(国际标准化组织)器件在HDLC方式中的具体应用。文末提供了经过实践验证的同步HDLC初化主程序。 Based on the experiments we have done, this paper introduces the experiment circuit of HDLC (Advanced Data Link Control Protocol) communication method using SIO programmable communication interface chip, the use of interface control signal and SIO International Organization for Standardization) device in the HDLC mode of the specific application. At the end of the text provides a proven experimental HDLC initialization of the main program.