I understand about  and .
I'd like to confirm about the difference between Vusb_3.3(SID322) and Vusb_3(SID323).
I think that it is designed to meet the specifications of Vusb_3.3 in general.
Is my idea correct?
If my idea correct, what is the purpose of this specification(Vusb_3)?
Apologize for late response...
Regarding the remaining quesition #1, “Functional operation only” describing in Vusb_3 would mean that any DC or AC specifications for the USB block would not be guaranteed.
So Vusb_3.3 and Vusb_3 are two different defined ranges for the same supply. The first defines the range for full spec compliance, the second defines a larger “functional only” range. It is the same as saying that “the USB connection might work”.