LG LM-X120HM Service Manual page 92

Audio Block Diagram
I2S0_DATA_IN
AUD_CLK_MISO
AUD_DAT_MISO0
AUD_DAT_MISO1
AUD_SYNC_MISO
AUD_CLK_MOSI
AUD_DAT_MOSI0
AUD_DAT_MOSI1
AUD_SYNC_MOSI
MT6739
LGE Internal Use Only
AU_LOLP
AU_LOLN
AUD_CLK_MISO
AUD_DAT_MISO0
AUD_DAT_MISO1
AUD_SYNC_MISO
AU_HSP
AUD_CLK_MOSI
AU_HSN
AUD_DAT_MOSI0
AUD_DAT_MOSI1
AUD_SYNC_MOSI
MIC_BIAS0
AU_VIN0_N
PMIC
AU_VIN0_P
MT6357
AU_VIN2_N
AU_VIN2_P
AU_HPR
AU_HPL
HP_EINT
AU_VIN1_N
AU_VIN1_P
(EAR_MIC_JCK_OUT)
SPEAKER
SPK_P
SPK_N
Receiver
RCV_P
RCV_N
MAIN_MIC
MIC_BIAS_0
MIC_IN1_N
MIC_IN1_P
SUB_MIC
MIC_BIAS_1
MIC_IN3_N
MIC_IN3_P
Copyright ⓒ 2019 LG Electronics. Inc. All right reserved.
92
Exteral Audio PA
Ear-jack
SPK_R
SPK_L
S/W_DETECT
MIC
GND
Only training and service purposes