I am planning on providing a system with the option of powering via USB. Now the system will require greater than 100mA, so USB 3.0 interface will need to be used for powering the system. The data transfer via USB will only be capable of interfacing with USB 2.0.
What is the difference between the power lines of USB 2 and 3 and can this impact my data transfer whilst being powered via "USB 3.0". I have read something about the USB 2.0 Data pins being used for powering for USB 3.0B? Not too sure.
TL;DR At the moment i am not sure whether my system will be able to transfer data via the USB 2.0 pins (D+, D-) whilst being powered by USB 3.0 (~900mA). SAME CONNECTOR.