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TPS23880外挂8051单片机进行初始化后工作异常

Other Parts Discussed in Thread: TPS23880

我目前是这样做TPS23880的,我自己用8051单片机通过I2C连接到TPS23880对它进行初始化,寄存器12写入0XFF,寄存器14写入0XFF,寄存器29写入0XFF,TPS23880端口有POE功能输出,但是我接的是BT的PD板子(TPS2373-4 demo购买TI的原厂的)也只能输出15.4W,通过程序查看下了分级寄存器,TPS23880对BT的PD板子分级为 “3级”,接的是BT的板子,应该是‘8级“啊, 对TPS23880的初始化  3个寄存器(12,14,29号寄存器)写入没有问题,  想问下这样初始化23880是否可行,还是需要初始化其他寄存器? 急!!!