Headset Interface - LG MG120a Service Manual

3. TECHNICAL BRIEF

3.3.8 Headset Interface

This type supports mono sound.
Switching from Receiver to Headset Jack
If jack is inserted, EAR_SENSE/ goes from high to low.
Audio path is switched from receiver to earphone by EAR_SENSE/ interrupt.
Switching from Headset Jack to Receiver
If jack is removed, EAR_SENSE/ goes from low to high.
Audio path is switched from earphone to receiver by EAR_SENSE/ interrupt.
- 30 -