LG lg-d821 - Page 222

5. BLOCK DIAGRAM
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Only for training and service purposes
LGE Internal Use Only
[D821] Audio
MAIN_MIC_N
WCD9320
MSM8974
MAIN MIC
RCV
MAIN_MIC_P
SPK
SPK_DRVP
SLIMBUS_CLK
SLIMBUS_DATA
SLIMBUS_SCK
INTR_1/2
WCD_INT1/2_N
SLIMbus
UART
EARO_P
EARO_M
RCV_P
RCV_M
SPK_DRVM
SLIMBUS_DATA
MIC1_INP
MIC1_INM
SUB MIC
SUB_MIC1_N
SUB_MIC1_P
MIC3_INP
MIC3_INM
SPK_VSNSP
SPK_VSNSM
PM8941
BT/WIFI/FM
CoB
(BCM4335)
MIC2_INP
EJ_MIC
HPH_R_OUT
HPH_L_OUT
HPH_RM
HPH_LP
HPH_REF
GPIO_0
GPIO_1
UART_TX
UART_RX
+1V8_VREG_S3A
EAR_MIC_JACK
HPH_REF
HPH_AUD_SW_INT
HPH_AUD_SW
PCM
4
4
6
SDIO
GPIO_63
RESET_N
WCD_RESET_N
GPIO_72/93
EAR_MIC_EN
MAX14628
MIC
MODE
DET_IN
MSM8974
EAR_KEY_INT
EAR_SENSE_N
GPIO_65
GPIO_64
DET
SWD
GPIO_29
+
-
MCLK
WCD_MCLK
CLK_CODEC
MIC_BIAS1
MAIN_MIC_BIAS
1
2
Tx NC
Rx ANC
Zooming
Tx NC
Rx ANC
MIC_BIAS3
SUB_MIC1_BIAS
Mic / GND / R / L
15. Audio
SPK_P
SPK_M
MIC2_INM
EJ_MIC_N
Earjack_detect
VDD_P3_01
EJ_MIC
1
1
2