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关于充电芯片中不同的充电模式中PSEL引脚是如何配置的?



您好,我看了很多TI的充电芯片中,看到很多在USB HOST和Adapter的充电模式选择中用到了PSEL和OTG引脚,一般情况下PSEL为高电平时为USB HOST模式,PSEL为低电平时是适配器模式,并且PSEL是用过USB PHY来得到的,但是我想搞清楚PSEL引脚在配置时具体是怎么连接的,是连接到GPIO接口来配置,还是有其他的电路方式来实现?希望尽快得到回复,万分感激,谢谢!