How about the state of DP&DN pins of PTN3222CUK when the reset signal RST_N is asserted? (Hi-Z? Pull-Down? Pull-Up? No-change?)
And if it is not the Hi-Z state, is there any way to change the state of DP&DN to Hi-Z when in reset?
(For example, cut down the 3.3 V power line when in reset or something like that)
已解决! 转到解答。
When reset pin of PTN3222CUK is asserted, USB2 interface is Hi-Z with 2M ohm pull down on D+/D-.