Use the following for OTG function settings:
- Connect a 7-V power supply to the VBAT load.
Remove the VIN power supply from J1 (Connection must be physically
removed from board).
- Write “09C4” to the OTG voltage register.
- Write “1000” to the OTG current registers.
- Remove JP2 (Enable OTG/VAP function).
- Select EN_OTG in Charge Option 3.
Measure → V(J1(VIN)) = 5 V ±1 V