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usb 接入充电适配器，协议是DCP，DSEL一直为低电平，拔掉充电器，为何DSEL还是保持低电平？
您好，DSEL is low during detection, goes high when SDP and non-standard adapter are detected but stays low if DCP is detected.
谢谢您的回答， 请问拔出usb不充电了， 变成usb otg 模式， DSEL也不能被拉高的吗
您好，我手边没有BQ25895的评估板，建议您实际测试一下。
bq25890/5 DSEL Pin & CDP Detection Limitation您可以参考一下。
bq2589x_DSEL_CDP_limitation.pdf
感谢回答，我在检测到是DCP协议时，使bq258795进入HIZ模式，然后又迅速退出HIZ模式，这样子是能使DSEL又被拉高，后面就可以通过usb通信。
请教一下，这个HIZ模式是什么效果？我测试结果是PMID端不能升压了。
您好，请参考下面链接的内容
https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/523920/bq25895-bq25896-does-d-d--go-to-hiz-after-detection?tisearch=e2e-sitesearch&keymatch=BQ25895%2520HIZ#
