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Copyright © 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
6. CIRCUIT DIAGRAM
82n
L6611
D6929
0
R6615
2.2K
R6613
C6613
2.2K
DNI
R6616
1
2
CN6450
FB6609
1000
L6612
82n
DNI
D6925
1000
FB6100
1000
FB6610
DNI
R610
1
82n
L6450
0
R6920
R6102
DNI
R610
3
DNI
DNI
R6104
0
R6921
1u
C6107
C6108
1u
82n
L6451
R6424
330K
FEED
ANT10003
EAG63613001
FEED
EAG63613001
ANT10004
C6606
1n
FB6611
1800
1800
FB6613
FB6612
1800
1800
FB6600
C6106
0.1u
C6101
0.1u
C6102
0.1u
R6105
20K
D6927
D6924
DNI
D6928
D6926
MIC_BIAS1
MIC_BIAS2
HPH_REF
LINE_OUT1
LINE_OUT2
GND2
MCLK
VDD_IO
RESET_N
VDD_VBAT
CCOMP
GND1
GND3
GND4
EAROP
EAROM
MODE
MIC1_INP
MIC1_INM
MIC2_INP
MIC2_INM
MIC3_INP
MIC3_INM
MIC4_INP
MIC4_INM
NC3
NC1
MBHC_HSDET
LDO_HI_CAP
NC2
GND_CFILT
SLIMBUS_CLK/I2C_SCL
SLIMBUS_DATA/I2C_SDA
I2S_WS
I2S_SCK
DMIC0_DATA/TX_I2S_SD0
DMIC0_CLK/RX_I2S_SD0
INTR
VDD_DIG
VDD_TX_RX
HPH_L
HPH_R
VDD_BUCK
BUCK_VSW
BUCK_VOUT1
BUCK_VOUT2
GND_BUCK
-NCP_VNEG
NCP_C1P
-NCP_C1M
SPKR_DRVP
SPKR_DRVM
VDD_SPKDRV
GND_SPKDRV_1
GND_SPKDRV_2
U6100
WCD9302
40
55
45
50
49
1
2
11
7
12
6
13
3
21
16
27
19
4
9
24
15
14
30
20
23
51
34
37
46
52
41
42
43
38
53
47
39
44
33
31
26
18
28
5
22
35
8
10
29
25
32
36
17
48
54
+2V1_VSW_S4
C6622
1n
+VPWR
C6104
2.2u
1u
C6103
+1V2_VREG_L4
+1V8_VREG_L6
+5V0_SPK_BOOST
+1V8_VREG_L6
C6109
4.7u
4.7u
C6105
R6100
0
TP6106
C6111
DNI
C6623
1n
C6110
0.1u
C6121
DNI
C6122
DNI
+VPWR
1u
L4940
C4940
4.7u
+5V0_SPK_BOOST
VOUT1
GND1
SW
1
EN
SW
2
VOUT2
GND3
VIN
GND2
U4940
C2
A3
C3
A2
B2
B3
B1
C1
A1
D6811
DNI
D6810
DNI
S/W_Detect
SPK_L
SPK_R
MIC
GND
J6600
C6923
33
p
C6922
0.1u
C6112
DNI
0.1u
C6920
33p
C6921
FB6921
1800
FB6920
1800
OUT
G1
G2
VDD
G3
G4
MIC6920
6
5
4
3
2
1
OUT
G1
G2
VDD
G3
G4
MIC6921
6
5
4
3
2
1
33p
C6811
33p
C6812
C6810
33
p
+VPWR
DNI
C6703
C6702
DNI
2.4M
R6425
S
B1
VCC
GND
A
B0
FSA5157L6X
U6600
4
3
5
2
6
1
VA660
3
VA6602
2
1
VA6601
R6617
0
C6614
33p
VA6600
C6700
33p
33p
C6701
FM_ANT
SLIMBUS_DATA
SLIMBUS_CLK
CODEC_INT
PMIC_AUDIO_REF_CLK
CDC_BOOST_5V_EN
EAR_MIC_JACK
EAR_MIC_JACK
LINE_OUT_IRRC
CODEC_RESET_N
MIC_IN1_N
MIC_IN1_N
MIC_IN1_N
HPH_L_OUT
HPH_L_OUT
HPH_R_OUT
HPH_R_OUT
MIC_IN3_N
MIC_IN3_N
MIC_IN3_N
MIC_BIAS_1
MIC_BIAS_1
MIC_BIAS_1
MIC_IN2_N
MIC_IN2_N
MIC_IN2_N
MIC_BIAS_2
MIC_BIAS_2
MIC_IN3_P
MIC_IN3_P
HPH_REF
HPH_REF
HPH_REF
SPK_N
SPK_N
SPK_P
SPK_P
MIC_IN1_P
MIC_IN1_P
RCV_P
RCV_P
RCV_N
RCV_N
EAR_SENSE_JACK
EAR_SENSE_JACK
C-CLIP PN CHANGE 1.4 -> 2.05
Rev_0.5
< 6-1-1-1_Codec_WCD9302 >
Dedicate a ground island for the buck/NCP ground connections.
1. Pin 18, 23 and pin 40 should be connected to main GND directly.
2. Pin 55 should be connected to the GND side of C680 and directly
connected to the main GND with dedicated vias.
Connect this GND to inner GND layer directly.
CCOMP is used for CODEC reference voltage generating,
and LDO_HI_CAP is used for MICBias.
So do not connect this gnd to other ground on out layer.
Remove C6100 to reduce BOM.
WCD9302 MICBias has high PSRR and VDD_VBAT pin is only used to MICBias.
Make star route to BUCK_VOUT1 and 2 from C6104.
2. We recommend MLCC capacitor in this case.
MC-C06162-1 : 1. Don't connect Positive of Tantal, TVS diode to Negative voltage if use
(DGMS Guide)
You may subtract the external ESD components (The pins of HPH L/R, EAR P/M and SPK L/R)
Note: The WCD9302 ingetrates IEC ESD protection inernally. (8 kV contact and 15 kV air discharge)
1.0mm
1.0mm
< 6-8-2_Receiver_TCOIL >
Rev_0.4
RCV + TCOIL
(DGMS Guide)
When USE) TVS devices's Working Voltage must be greater than the Path voltage
MC-C04773-8 : For ESD Protection / Tuning points
MC-C00074-11 : For ESD Protection / Tuning points
(DGMS Guide)
When USE) TVS devices's Working Voltage must be greater than the Path voltage
MC-C00074-11 : For ESD Protection / Tuning points
(DGMS Guide)
When USE) TVS devices's Working Voltage must be greater than the Path voltage
Rev_0.4
GND Close to MIC
GND Close to MIC
< 6-6-1_Earjack >
should apply capacitor under 50pF value for ESD protection with d-class amp
(DGMS Guide)
MC-C04773-8 : For ESD Protection / Tuning points
When USE) TVS devices's Working Voltage must be greater than the Path voltage
GND Close to EarJack
Rev_0.4
< 6-9-2_2MIC >
Do not connect HPH_REF on near WCD9302
Connect this line to the earjack to reduce headset crosstalk.
QMC Recommanded :
SUB_MIC
MAIN_MIC
Rev_0.3
<4-9-1-2-1_5V_BOOST_
TPS61256A_AUDIO_EXTERNAL>
< 6-7-1_Speaker >
Rev_0.4
DC GND
Change 22u CAP to TANTAL
For Removing Shieldcan Insulator
Deleted at B
47p
D5100
C6612
100n
L6613
C6610
1n
R6926
0
R6611
4.7n
4.7n
R661
0
C6611
10n
C4941
22u