I am not planning to use the USB port on the LX2160. Can I connect USB_SVDD1, USB_SVDD2, USB_SDVDD1, USB_SDVDD2, USB_HVDD1 and USB_HVDD2 usb power pin to Gnd? Can I leave the 2 USB ports floating?
Yes, you can tie the USB power pins to GND but you also need to check out the note mentioned in table# 4 of LX2160A design checklist. You can't leave all pins of USB interface floating. Please refer to table# 40 of LX2160A design checklist.
