SPEED=FULL_SPEED
General Status Register
| RDERRI | Remote Device Connection Error Interrupt (Host mode only)  |  
| SPEED | Speed Status (Device mode only) 0 (FULL_SPEED): Full-Speed mode 1 (HIGH_SPEED): High-Speed mode 2 (LOW_SPEED): Low-Speed mode  |  
| CLKUSABLE | UTMI Clock Usable  |