关于I.mx6的USB口的上电初始化时的电平问题,在VBUS上电的2S左右,D+有个200mV~300mV的波形, 如图,有什么方法可以去掉吗?
Hello aaron,
请客户检查一下anadig寄存器hw_anadig_usb1_chrg_detect的bit20和bit19,这两个bit是0还是1,如果都是0,那么都改成1,再测一下,有没有这个200mV的幅度了。
Please ask the customer to check the bit20 and bit19 of the anadig register hw_anadig_usb1_chrg_detector. Whether these bits are 0 or 1, if both are 0, then change them to 1, and then check whether there is this 200 mV range.
Have a nice day!
BR,
weidong