利用多模式调制解调器芯片CMX868能直接通过高速串行总线与单片机串行接口进行通信这一特点设计的一套采用单片机来控制CMX868芯片的数据传输系统，握手协议部分-The use of multi-mode modem chip CMX868 directly by high-speed serial bus and the microcontroller serial interface to communicate with this feature set designed to use microcontroller to control the CMX868 chip data transmission system, part of the handshake protocol
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