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7. CIRCUIT DIAGRAM
1
2
GPA3:PCB_Rev_ADC
A, H : 100K : 6.2K : 0.155V
B, I : 100K : 12.1K : 0.286V
C, J : 100K : 20.0K : 0.442V
D, K : 100K : 27.0K : 0.563V
A
E, L : 100K : 39.0K : 0.744V
F, M : 100K : 51.0K : 0.895V
G, N : 100K : 68.0K : 1.073V
1.0 : 100K : 100K : 1.325V
PCB_VERSION
1.1 : 100K : 150.0K : 1.59V
1.2 : 100K : 215K : 1.809V
1.3 : 100K : 390K : 2.109V
1.4 : 100K : 680K : 2.31V
B
C
D
RTC_GND
Charging Circuit
VBUS
Q300
SIA911DJ
S2
G2
E
D2
D4
D3
D1
S1
G1
CHREG
DCIO_INT
VBAT_H
VBAT
CHS+
R314
2012
R316
1/4W
Route as a differential pair
0.1
1%
0
CHS-
USB charging path
F
C330
C331
22p
33u
D302
C1
1
A1_C2
BDATA
3
A2
2
C337
R320
KDS221E_RTK
22p
300K
Causion when PCB lLayout
G
Direction of BAT and GND
FGS+
2012
R324
Route as a differential pair
1/4W
1%
0.025
FGS-
H
Make an Area at 8, 9 Layer
1
2
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3
4
5
VBAT
TP301
TP302
TP303
C301
TP304
4.7u
C305
4.7u
K12
VBAT_A
LDO_A
K14
VBAT_B
LDO_D
C306
4.7u
LDO_G 1.50~2.85V 100mA
F14
VBAT_E
LDO_E
M13
VBAT_F
VBAT_H
LDO_F 1.05~2.65V 30mA
N14
VBAT_G
LDO_H 1.20~1.80V 200mA
F3
VBAT_H
Charger Block
M3
VBAT_K
LDO_K 1.80~2.75V 200mA
VBAT_C
B14
VBAT_L
A1
VBAT_M
LDO_C
D1
VBAT_C
LDO_LP
VDD_REF
B12
MOD1
A10
X300
XTAL1
Route as a differential pair
D11
XTAL2
1
2
32.768KHz
R313
B11
RTCCLK
XTAL_OUT
1 %
27
C322
DNI
TP305
P2
SIMOFF_N
M2
SRST_n
SRST_N
M1
SCLK
SCLK
N3
SDAT
SDAT
A11
BDATA
BDATA
J14
FGS+
FGSENSEP
VA605
varistor
VBAT
J13
FGS-
FGSENSEN
G2
VBAT_D
H1
CHS+
CHSENSEP
H2
CHS-
CHSENSEN
H3
CHREG
CHREG
OTP
DCIO_INT
D301
RSX101VA-30TR
J2
VBUS
DCIO_INT
F1
DCIO
E2
VBUS
VBUS
F2
TRICKLE
TRICKLE
C5
R317
RF_CTRL_DATA
DAC_DAT
B5
VDD_REF
1u
RF_CTRL_STR_1
DAC_STR
VDDE_1V8
VDDC_2V65
VBAT
C4
RF_CTRL_CLK
DAC_CLK
P7
VDD_SPKR
Audio Block
P6
Audio Block
VDD_BEAR
P13
VDD_AUDIO
Digital Block
P3
Audio Block
VDD_AUXO
G1
Charger Block
VDD_REF
A12
VDD_IO
D12
TEST
A13
VREF
A14
IREF
Audio Block
C346
C347
C348
C349
0.1u
1u
0.1u
0.1u
3
4
5
6
7
8
VDDD_2V65
C300
0.1u
C302
2.2u
K13
2.75V 150mA
LDOA_OUT
C12
EXT_LDO
EXT_LDO
2.65V 200mA
L12
LDOD_OUT
G14
LDOE_OUT
N12
1.80V 200mA
LDOC_OUT
L14
LDOH_OUT
G13
LDOF_OUT
L13
LDOG_OUT
2.75V 100mA
M14
LDOK_OUT
2.65V 200mA
C307
C308
C309
C310
C311
2.2u
1u
1u
4.7u
1u
1608
D13
2.20V
LDOLP_OUT
E1
BUCK_FB
BUCK
C1
1.2V
VBUCK
5%
B1
VSS_BUCK
U300
L1
SIMLDO_OUT
C323
AB3100
Close to ABB
1u
N1
SIMRST_N
SIMRST_n
N2
SIMCLK
SIMCLK
P1
SIMDAT
SIMDAT
K3
SCK1
DB_I2S0_CLK
J3
WS1
DB_I2S0_WS
J1
SDI1
DB_I2S0_ULD
K2
SDO1
DB_I2S0_DLD
L3
SCK2
DB_I2S1_CLK
K1
WS2
DB_I2S1_WS
K4
SDI2
DB_I2S1_ULD
L2
SDO2
DB_I2S1_DLD
N10
MIC1P
M10
MIC1N
N9
MIC2P
P9
MIC2N
N8
MIC3P
P8
MIC3N
N11
MIC4P
P10
MIC4N
N13
CCO1
CCO1
P14
CCO2
N7
SPKRP_OUT
SPKRP
N6
SPKRN_OUT
SPKRN
P5
BEARP_OUT
BEARP
M5
BEARN_OUT
BEARN
M4
AUXO1_OUT
EAR_R
P4
AUXO2_OUT
EAR_L
P12
LINEIN1
P11
LINEIN2
C335
N4
MIDR_OUT
22p
H14
PLL_DEC3
J12
PLL_DEC4
E3
SW_BOOST
C2
BOOST_ISP
D2
BOOST_ISN
B2
VBOOST
A7
DACO_0
B6
DACO_1
DCDC_REF
A6
DACO_2
BIAS_CTRL
C6
DACO_3
6
7
8
- 181 -
9
10
11
VDDA_2V8
VDDD_2V65
VDDE_1V8
VDIGRAD_1V8
VBAT
VBAT
R302
0
VDDA_2V8
to RF3300 Power Detector
R303
0
VDDD_2V65
to AB3100 CODECs/ADC/PLL
R304
0
VDDE_1V8
to All I/O Supplies and Memory
R305
0
C303
C304
VDIGRAD_1V8
to RF3300 digital
2.2u
2.2u
VDDC_2V65
VDDH_2V75
VDDF_2V5
VDDG_2V85
VDDK_2V75
R306
0
VDDC_2V65
to Hall Switch and AB3100 BEAR
R307
0
VDDH_2V75
to 3xis
R308
0
VDDF_2V5
to DB3100 analog
R309
0
VDDG_2V85
to SD Card and LCD
R310
0
VDDK_2V75
to Bluetooth
R311
VBACKUP
4.7K
C312
1u
VBAT_C
VBAT
BLM18PG121SN1J
VCORE
120ohm 1608 2A 50mohm Bead
FB300
2.8*2.6*1.0 0.7A 240mohm 20%
R312
0
VCORE
to DB3210 CORE
L300
4.7uH
D300
C314
C315
C317
C318
C319
RB521S-30
0.1u
10u
10u
10u
0.1u
Parallel with VCORE
Local ground plane
Use multiple via
SIMVCC
MIC1P
MIC1N
MIC2P
FM_RP
FM_LP
Audio Subsystem
VBAT
C332
C333
C334
1u
0.1u
1u
A4
C1N
C338
1u
A5
A1
C1P
HPR
A2
HPL
C339
1u
D1
EAR_R
INA2
C342
1u
D2
EAR_L
INA1
U301
C343
18000p
C1
SPKRP
INB2
MAX9877AEWP_TG45
C344
18000p
C2
D5
SPKRN
INB1
OUT+
B2
B5
BIAS
OUT-
B3
AMP_I2C_SDA
SDA
C3
AMP_I2C_SCL
SCL
1%
R322
15
D4
BEARP
RXIN+
R323
15
B4
BEARN
RXIN-
1%
C354
1u
Audio Subsystem
9
10
11
12
A
B
C
D
E
F
HS_EAR_R
HS_EAR_L
SPK_RCV+
SPK_RCV-
G
H
12
LGE Internal Use Only
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Troubleshooting
