I am currently debugging some SOC design bugs which cause AUX communication error only when using with TUSB1064 together.
Now I found the SBU/AUX line common voltage is the key to reproduce the failure.
I want to understand what happens when TUSB1064 is switching and find a way to reproduce the failure without TUSB1064.
I captured the waveform when TUSB1064 is switching :
Could you tell me why SBU1 and SBU2 ascend to about 1.6V at first?
If I can get a block diagram describing SBU - AUX switching it helps a lot!