使用ISL3330或ISL3331实施三孔,半双工,双协议(RS - 232 / RS - 485)的接口 Implementing a Three Pin, Half-Duplex, Dual Protocol (RS-232/RS-485) Interface Using the ISL3330 or ISL3331 Application Note May 27, 2008 AN1401.0 By Jeff Lies Introduction loopback, etc.). One of these sub-modes is particularly useful for this ……