LG F3000 - Headset Interface

3. TECHNICAL BRIEF
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3.11 Headset Interface
Figure 3-23. HEADSET JACK INTERFACE, HEADSET JACK ANALOG SWITCH
HEADSET_SPK_L
HEADSET_SPK_RAUX_SPK_R
AUX_SPK_L
GPIO_6
NO1
A4
NO2
B4
V+
C3
COM1
A3
COM2
B1
GND
C2
IN1
A2
IN2
C1
NC1
A1
NC2
C4
U304
MAX4684EBC_T
2V8_NEC_AVDD
C721
0.1u
EARMM_EN
2
CLOSE TO EARJACK
3
(GPIO_9)
6
5
4
1
(GPIO_40)
NA
C218
R216
330K
C205
0.1u
R210
1M
0R211
2V8_VEXT
J201
2V5_JACK
33uC217
VA205
EVL5M02200
C219 39p
33uC213
12K
R204
C221
2V8_VEXT
NA
EVL5M02200
C220
VA204
39p
VA203
EVL5M02200
C203
NA
R206
NA
C200
0.1u
U202
2
GND
1
OUT
5
VCC
3
VIN+
VIN-
4
1K
R201
22u
C204
R214 0
1.5K
R203
C212
39p
20K
R202
100R230 R213 4.7
C208
NA
R215
1M
AUXIP
HOOK_DETECTAUXIN
HEADSET_SPK_L
HEADSET_SPK_R
JACK_DETECT