LG TracFone LG840G Service Manual page 126

■ T3H AUDIO Block
840G AUDIO Block
LINE_OUT_L_P
LINE_OUT_R_N
HPH_OUT_L_P
HPH_OUT_R_N
QSC6270
LGE Internal Use Only
AUDIO I2C_ SCL
GPIO17
AUDIO I2C_ SDA
GPIO16
RCV_P
EAROP
RCV_N
EARON
LINE_OUT_P
LINE_OUT_N
HPH_L
HPH_R
MIC2P
MIC_MODE
GPIO65
3.5PI_KEY_POLE_DET
GPIO10
EAR_SENSE
GPIO49
MIC2N
MIC1P
MIC1N
BT_PCM_CLK
GPIO22
BT_PCM_DOUT
GPIO21
BT_PCM_DIN
GPIO20
BT_PCM_SYNC
GPIO19
SCL
SDA
IN3- Audio Subsystem
TPA2055D3
IN3+
IN2+
IN2-
IN1+
IN1-
Headset
Detect
BT_PCM_CLK
BT / WiFi
BT_PCM_DIN
BCM4330
BT_PCM_DOUT
BT_PCM_SYNC
- 126 - Copyright © 2012 LG Electronics. Inc. All right reserved.
6. BLOCK DIAGRAM
Speaker/
OUT
Receiver
Ear-Mic.
HPL
(3.5pi)
HS_MIC
EAR_SENSE_3.5PI
Only for training and service purposes
EAR_GND