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PCA9548操作求助



 各位大神们,

  你们好,我最近有个项目使用PCA9548,我对操作时序有些疑惑,外部通过A2-A0设置PCA9548的地址,然后对该地址进行B7-B0的写操作,用于选择通道,假如我选择chanel0,这样的话chanel0就和I2C总线连接了么?按理说此时我I2C总线上是什么数据,输出就应该是什么数据?还是需要按照什么时序进行操作?