Have you ever found yourself wanting to connect more than one I2C device to a single controller and couldn't because they have identical I2C addresses? There you have it, I2C multiplexer (I2C MUX) ...
由於一次只會與一個slave溝通,而每一個slave都是與原本的I2C bus相通,所以上面也能放置I2C Address 0 127 的設備,除了0x70 0x77被TCA9548A佔去,剩下的Address都能使用,所以一個slave ...