分析了两种扩展PT2262/PT2272控制通道的常用方法及其优缺点,提出了用PT2262/PT2272的硬件编码器和译码器实现了多通道控制的方法并利用该方法设计了64-6编码器和6-64译码器在PT2262/PT2272中的具体实现电路.通过实验表明,该电路具有响应速度快,无需软件编程的优点.%The advantages, disadvantages and methods of expanding PT2262/PT2272 control channel are analyzed. The multi-channel control method based on hardware encoder and decoder of PT2262/PT2272 is proposed, the 64-6 encoder, 6-64 decoder and its hardware circuit in PT2262/PT2272is designed in this paper. Experiments show that the circuit has fast response, no software programming and wide application.
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