5. Interface
1. Mode button:
Short press: Switch input mode
Short press twice: Reset WiFi or Bluetooth connection in WiFi or Bluetooth mode
Short press three times: Restore to factory settings
Long press: Turn device on/off
*When device is off, short press to turn on the device
2. DC in: 5V USB Type-C
3. LAN: Wired connection to router.
4. Optical Out: SPDIF optical output to other device.
5. Coaxial Out: SPDIF coaxial output to other device.
6. Line Out: Analog RCA output to other device.
7. Line Out Pin: Analog output pins for connection to other device.
8. IIS-Out Pin: Digital output pins for connection to other device.
9. IR: IR receiver for remote controller
10. MCU GPIO:
LED1, 2, 3: For connection to external LED light.
IR: For connection to external IR receiver.
KEY: For connection to external button board.
11. MCU GPIO:
KEY: For connection to external button board.
EH-A, EH-B: For connection to rotary encoder.
SDA, SCL: For 12C connection
IR: For connection to external IR receiver
