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9.4.4 Headset Jack
The Y210 has a 3.5-mm headset jack. When the headset jack has no headset inserted, the
headset jack's pin 3 and pin 4 are open, and the headset detection voltage is at a high level.
After a headset is inserted, pin 3 and pin 4 are closed, and the headset detection voltage is at a
low level, indicating the insertion of a headset. The HS_DETECT (GPIO86) pin is used to
detect the headset insertion.
The HSED_MICBIAS (PM8029/HSED_BIAS1) supplies power to the headset microphone.
The HSED_HSKEY_ADC (PM8029 MPP5) is used to detect the headset button press.
The Y210 supports only the LRGM headsets and does not support LRMG headsets.
Figure 9-17 Headset jack circuit
No sound comes from the headset during a call.
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