LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. TECHNICAL BRIEF
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3.11 Headset Interface
This phone has 7 electrodes such as GND, AUXIP, AUXIN, HS_OUT_L,HS_OUT_P JACK_DET,
ACC_DETECT. This type supports stereo sound
Switching from Receiver to Headset Jack
If jack is inserted, JACK_DETECT goes from high to low.
Audio path is switched from receiver to earphone by JACK_DETECT interrupt.
Switching from Headset Jack to Receiver
If jack is removed, JACK_DETECT goes from low to high.
Audio path is switched from earphone to receiver by JACK_DETECT interrupt.
Hook detection
If hook-button is pressed, ACC_DETECT is changed from high to low.
This is detected by ACC_DETECT of AD6726.
And then hook is detected.
Figure 3.11 HEADSET JACK INTERFACE
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