When short circuiting USB-OTG-POWER to GND (using a wire directly connected to GNG),
DP_OUT、DM_OUT will experience abnormal downward movement，the value is approximately -660mV to -800mV.
At this point, the communication between the rear stage and 25830 has exceeded the absolute maximum ratings of the HUB IC（-0.5V）.
What is the reason for this abnormal pulse? How can it be eliminated？
