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BQ78Z100: I2C mode XL Setup

Part Number: BQ78Z100

Hi 您好

請教一下 bq78z100 原本就是I2C 通訊模式了

但在參數設定中 卻還有 I2C 選擇

XL (Bit 23): 400-kHz mode
1 = Active
0 = Inactive

當我 XL = 1  用意是再說明什

若維持 XL = 0  一樣是 I2C

那0和1  差在哪   開與不開是否有何關聯  特別意思