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Other Parts Discussed in Thread: PCA9548A
https://e2e.ti.com/support/interface-group/interface/f/interface-forum/943112/pca9548a-i2c-clock-stretching
PCA9548A 是否支持 I2C 时钟扩展？
尊敬的 Mike：
该器件支持时钟扩展、因为该器件会将来自下游从器件的时钟低电平信号传递到主器件所处的主 SDA/SCL 通道。
该器件本身没有时钟 NFET、因此它不会(自身)将时钟线路驱动为低电平。 这可防止由于加电不良而将时钟线路锁定为低电平。
-Bobby
