Pinout for 20-pin I/O connector

Support Article No. 2208
Latest updated: 8/12/2014
  • Pin1:  GND            (Ground)
  • Pin2:  Reserved      (Reserved)
  • Pin3:  EAR_MIC+   (Microphone+ for Ear Set)
  • Pin4:  EAR_MIC-    (Microphone- for Ear Set)
  • Pin5:  EAR_L         (Left Receiver for Ear Set)
  • Pin6:  EAR_R        (Right Receiver for Ear Set)
  • Pin7:  Detection     (Detect the Ear Set)
  • Pin8:  Remote       (The button for Ear Set)
  • Pin9:  5V_Power   (Input power (+5V))
  • Pin10: 5V_Power   (Input power (+5V))
  • Pin11: Debug1       (For Test)
  • Pin12: Debug2       (For Test)
  • Pin13: Debug3       (For Test)
  • Pin14: 3.3V_Power (Output power (+3.3V, Max 100mA))
  • Pin15: RXD            (Input data for UART)
  • Pin16: TXD            (Output data for UART)
  • Pin17: VBUS         (Input(Client) or Output(Host) USB power (+5V))
  • Pin18: USB_D-      (USB signal)
  • Pin19: USB_D+     (USB signal)
  • Pin20: GND           (Ground)