USB331x USB Transceiver Layout Guidelines
The USB331x provides the physical layer interface (PHY) in systems using Hi-Speed USB. Proper design techniques
must be used in the printed circuit board (PCB) layout to maintain the signal integrity required for 480 Mpbs operation. The USB331x is available in both a 24-pin QFN and a 25-ball BGA, and layout guidelines for both packages are provided in this application note.