When designing for low power, are there any special terminations / connections I need to make with respect to the USB pins if I'm not using the USB hardware (i.e. V18, VUSB, VBUS, PU_1/DM, PUR, PU_0/DP, VSSU)? It's not addressed in the unused pin section of the manual, so I'm currently just leaving them open... also do I have to do anything in software to disable this section of the chip, or are the default register settings in a disabled state?
Regards,
Vic