BQ25895的DSEL引脚状态疑问
你好,BQ25895的DSEL是在完成充电类行检测后,会自动置高的吗?需要能过I2C控制吗? datasheet里面DSEL的功能描述如下,可以理解为如果识别到充电类型为DCP和MaxCharge,DSEL引脚电平会一直置低吗?如果识别到其它充电类型,比如QC2.0等,才会在识别完成后置高吗?
Open-drain D+/D- multiplexer selection control. Connect the DSEL to a logic rail via 10-KΩ resistor. The pin is normally float and pull-up by external resistor. During Input Source Type Detection , the pin drives low to indicate the device D+/D- detection is in progress and needs to take control of D+, D- signals. When detection is completed, the pin keeps low when DCP or MaxCharge is detected. The pin returns to float and pulls high by external resistor when other input source type is detected
HI
I2C中的控制如下
保持低 when DCP or MaxCharge™ adapter is detected.
其他类 returns to float and pulls high