FrSky R-XSR pinout

• GND - ground wire
• +3,5-10V - positive voltage supply. R-XSR is rated up to 10V and powering it from 5V is the best option
• SmartPort - inverted S.Port pin (standard) - can be used directly with STM32F3 and F7 series
• SBUS - SBUS protocol output
• SBUS Input - for redundancy function only
• Uninverted SmartPort - uninverted S.Port pin (standard is inverted) - can be used directly all flight controllers on any serial port
• Uninverted SBUS - uninverted SBUS protocol output (standard is inverted)