G3100
8. Circuit Diagram
8.1 Main Chipset and Memory
5
4
2V45_VCORE 2V8_VMEM
C123
0.1u
G2
VSS0
J8
VSS1
B
A1
A8
B1
B2
B7
B8
C1
F8
L1
L2
L7
L8
M1
M8
NC0
NC1
NC2
NC3
NC4
NC5
NC6
NC7
NC9
NC10
NC11
NC12
NC13
NC14
_CEF
_OE
_WE
_BYTE
RY_BYF
_WP_ACC
_RESET
_LB
_UB
_CE1PS
CE2PS
DU1
DU2
DU3
DU4
DU5
DU6
H1
P7
K14
C8
ADD1
ADD2
ADD3
ADD4
ADD5
ADD6
ADD7
ADD8
ADD9
ADD10
ADD11
ADD12
ADD13
ADD14
ADD15
ADD16
ADD17
ADD18
ADD19
ADD20
ADD21
ADD22
H1
H2
C5
H8
2V8_VMEM
_ROM_CS1
_RD
JP101
_WR
TP108
J_WR
C3
D3
J1
D5
_LBS
_UBS
_RAM_CS
R110
10K
TP105
TP106
_RAM_CS
_ROM_CS1
_WR
_LBS
_UBS
_RD
R106
10K
2V8_VMEM
RY_BY
_RESET
E4
C4
D4
H4
J3
J2
J4
K3
K2
K4
L4
L1
L3
L5
M1
M2
N1
P1
N2
P2
N3
M3
P4
N4
M4
P5
ADD0
ADD1
ADD2
ADD3
ADD4
ADD5
ADD6
ADD7
ADD8
ADD9
ADD10
ADD11
ADD12
ADD13
ADD14
ADD15
ADD16
ADD17
ADD18
ADD19
ADD20
ADD21
ADD22
TP110
B2
G14
PWRON
CLKON
C124
1000p
13MHZ
X101
B4
B5
G7
K5
L4
L5
C125
NC
C132
NC
3
4
2
1
_RESET
R112
10M
USC0
USC1
USC2
USC3
USC4
USC5
ACC_DET
32.768KHz
MC-146
C
VIBRATOR
RX
HFK_EAR
TX
CHRDET
HOOK_DETECT
_MIDI_IRQ
2V8_VMEM
ONNOFF
JACK_DETECT
VMIDI_CTL
RY_BY
LCD_RES
R117
10K
_MIDI_RST
KB101
SP101
POWERKEY
ON/OFF
R120
GPRS
n.a
WAP
10K
KB102
KEYROW0
C
KB103
KB104
KB105
1
2
3
KB106
SOFT2
CHG_EN
EOC
GATEIN
LCD_ID
KB107
UP
KEYROW1
_MIDI_CS
SP102
KB108
KB109
KB110
4
5
6
KB111
KEYROW0
KEYROW1
KEYROW2
KEYROW3
KEYROW4
D
SEND
KEYROW2
KEYCOL0
KEYCOL1
KEYCOL2
KEYCOL3
KEYCOL4
SP103
KB112
KB113
KB114
7
8
9
M14
M13
P14
P13
N12
M11
KB115
C14
D12
A14
A13
E11
C12
B13
D11
D10
B12
C11
D9
B11
A11
C10
D8
A10
C9
C7
B9
A9
B8
A8
D6
B7
L13
M12
A6
F4
D4
B5
A5
C4
E4
B4
A4
C3
47n
DATA0
DATA1
DATA2
DATA3
DATA4
DATA5
DATA6
DATA7
DATA8
DATA9
DATA10
DATA11
DATA12
DATA13
DATA14
DATA15
N6
P6
M6
N7
M7
L7
P8
N8
M8
P9
M9
P10
N10
M10
P11
N11
AA
DATA0
DATA1
DATA2
DATA3
DATA4
DATA5
DATA6
DATA7
DATA8
DATA9
DATA10
DATA11
DATA12
DATA13
DATA14
DATA15
R101
2V45_VCORE
2V45_VAN
AUXADC4
C141
NC
R102
100K
C117 C118 C119
47n
47n
C120 C121 C122
47n
47n 47n
GPIO_32
JTAGEN
GPIO_21
GPIO_20
GPIO_19
GPIO_18
RAMCS
ROMCS
WE
LWR
HWR
RD
GPO_0
GPO_1
CLKOUT
CLKOUT_GATE
GPO_24
GPO_5
GPO_6
ASDI
ASDO
ASFS
PWRON
CLKON
CLKIN
OSCOUT
OSCIN
RESET
USC0
USC1
USC2
USC3
USC4
USC5
USC6
BSDO
BSOFS
BSDI
BSIFS
VSDI
VSDO
VSFS
U101
AD6522
GPIO_0
GPIO_1
GPIO_2
GPIO_3
GPIO_4
GPIO_5
GPIO_6
GPIO_7
GPIO_8
GPIO_9
GPIO_10
GPIO_11
GPIO_12
GPIO_13
GPIO_14
GPIO_15
GPIO_16
GPIO_17
GPO_2
GPO_3
GPO_4
GPO_7
GPO_8
GPO_9
GPO_10
GPO_11
GPO_16
GPO_17
GPO_18
GPO_19
GPO_20
GPO_21
DISPLAYCS
GPO_22
GPO_23
GPCS1
GPCS0
GPIO_22
GPIO_23
GPIO_24
SIMCLK
SIMDATAOP
KEYPADROW0
KEYPADROW1
KEYPADROW2
KEYPADROW3
KEYPADROW4
KEYPADCOL0
KEYPADCOL1
KEYPADCOL2
KEYPADCOL3
KEYPADCOL4
L14
K11
J11
J12
H13
H14
R103
47
DSR
TP101 J_JTAGEN
TP102 J_TDO_1
TP103 J_TDI
TP107 J_TMS
TP109 J_TCK
B2
TP104 B1
C2
C1
J_TDO_0
B1
C2
D1
D2
E1
A1
C1
E2
F1
F2
J4
K4
J2
K2
K1
J3
K3
J1
H1
H2
TP111
F3
G4
G2
G1
G3
H3
H2
G13
G12
H12
F14
F13
H11
F12
E14
E13
G11
E12
D14
D13
F11
M5
A7
C5
J14
L10
K13
K12
J13
MVBAT
100
TO U102_#A4 C116
220n
G2
F2
F1
E2
D1
E1
D2
TX_EN
RX_EN
BANDSEL1
T_H
B4
A3
TDI
TDO
TMS
TCK
ITXP
ITXN
QTXN
QTXP
IRXP
IRXN
QRXP
QRXN
RXON
TXON
MCLK
MCLKEN
RESET
ARSM
ATSM
ASDO
ASDI
ASFS
AFCDAC
RAMPDAC
U102
AD6521
REFCAP
REFOUT
AUXADC1
AUXADC2
AUXADC3
AUXADC4
BSDI
BSIFS
BSDO
BSOFS
VSDO
VSDI
VSFS
47n
F9
E9
C9
D9
E10
D10
C10
B10
A10
H9
TXIP
TXIN
TXQN
TXQP
RXIP
RXIN
RXQP
RXQN
BB
2V8_VMEM
R108
120K
AFC
TX_RAMP
BATT_TEMP
A8
A7
A6
A5
B5
A4
TEMPSENSE
TP112
AUXADC4
C126 C127
39p
VINAUXP
VINAUXN
VINNORP
VINNORN
IDACOUT
IDACREF
0.1u
H10
G10
J10
K10
BUZZER
_MAIN_LCD_CS
VOUTNORP
VOUTNORN
VOUTAUXP
VOUTAUXN
39p
10p
1u
(2012)
C131
39p
C140
100
0.1u
AUXIP
AUXIN
KEYROW3
C133
39p
VINNORN
C137
39p
39p
J6
CLOSE TO AD6521
K8
K7
K9
K6
VOUTNORP
VOUTNORN
AUXOP
AUXON
C138
NC
C139
NC
LCD_BACKLIGHT_CTL
KEY_BACKLIGHT
PLL_PD
SIM_RST
SIM_EN
SIM_CLK
SIM_DATAOP
D
SP104
KB116
KB117
KB118
*
0
#
SP106
SP107
KB119
DOWN
KEYROW4
SP105
SP108
Section
Date
Designer
07/26
2003
SP110
J_VBAT
J_GND
E
Sign & Name
VBAT
SP109
KEYCOL0
MODEL
Sheet/
Sheets
G3100
1/4
Checked
DRAWING
KEYCOL1
NAME
BB
Approved
KEYCOL2
KEYCOL3
KEYCOL4
Iss.
1
2
3
4
Notice No.
Date
Name
LG Electronics Inc.
DRAWING
NO.
SPFY0060901_1.1
5
LGIC(42)-A-5505-10:01
LG Electronics Inc.
- 115-
C
VINNORP
39p 39p
GSMSEL
VSYNTHEN
TXPA
MIC_ONOFF
PLL_LE
PLL_DATA
PLL_CLK
C128 C129 C130
R116
C134 C135 C136
DCSSEL
R111
82K
R109
1K
J1
K1
P3
L6
L8
P12
L11
C13
A12
D7
B6
D3
SOFT1
TP113
TP114
L12
B3
A3
N14
ADD0
ADD1
ADD2
ADD3
ADD4
ADD5
ADD6
ADD7
ADD8
ADD9
ADD10
ADD11
ADD12
ADD13
ADD14
ADD15
ADD16
ADD17
ADD18
ADD19
ADD20
ADD21
ADD22
C111
47n
A1
DVDD1
G1
DVDD2
K5
DVDD3
J4
VCCF
J5
VCCS
G1
F1
E1
D1
F2
E2
D2
C2
C6
E6
F6
C7
D7
E7
F7
D8
G8
F3
E3
D6
E5
E8
C115
47n
NC1
NC2
NC3
NC4
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
C110
47n
DGND1
DGND2
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQ8
DQ9
DQ10
DQ11
DQ12
DQ13
DQ14
DQ15
C114
GND1
GND2
GND3
GND4
GND5
GND6
GND7
GND8
GND9
GND10
GND11
VSSRTC
J2
G3
K3
H4
H5
K6
G6
J7
K2
H3
J3
K4
J6
H6
K7
H7
DATA0
DATA1
DATA2
DATA3
DATA4
DATA5
DATA6
DATA7
DATA8
DATA9
DATA10
DATA11
DATA12
DATA13
DATA14
DATA15
VCC1
VCC2
VCC3
VCC4
U103
TH50VPF5683CDSB
A
C113
100p
C112
47n
J9
B9
B6
B7
47n
A2
J5
C109
47n
F10
AVDD1
A9
AVDD2
J8
AVDD3
C108
47n
AGND4
AGND3
AGND2
AGND1
C107
47n
10
A2
C106
47n
E3
C105
47n
VPEG1
C104
47n
VDDRTC
C103
47n
B14
B10
C6
D5
C102
47n
9
8
2V45_VCORE
CLOSE TO AD6522
2V45_VCORE 2V45_VRTC
2V8_VMEM
L2
N5
N9
N13
C101
2V8_VMEM
7
B3
J7
B8
G9
CLOSE TO AD6522
L9
2V8_VMEM
6
VEXT1
VEXT2
VEXT3
VEXT4
3
VSIM
2
VMEM1
VMEM2
VMEM3
VMEM4
1
8.2 Audio Part
1
2
3
4
6
5
7
9
8
10
2V45_VAN
3.3K
C214
14
LED
MTR
2
19
6
PLLC
9
VREF
C205
390p
R206
SPOUT1
R207
0
CN201
SPK+ 1
R209
0
SPK-
17
C208 0.1u
MIC201
SPOUT2
18
3V3_VMIDI
C215
47p
IOVDD
C216
47p
7
8
VSS
SPVSS
100nH
1
2
OBG-15S40-C2
C213
39p
R211
2.2K
Speaker
VIBRATOR
L203
100nH
3
R213
Q203
2SC5585
2
MIC_ONOFF
C217
0.1u
16
C210
39p
C211 0.1u
100
1.5K
0
C218
0.1u
L202
39p
VINNORN
2
R215
VDD
C209
CLOSE TO RECEIVER
R208
SPVDD 15
32
C207
39p
VINNORP
0.1u
0
C206
39p
100
U207
YMU762
R212
R214
0
EQ3
A
2.2K
VA206
1000p
D0
D1
D2
D3
D4
D5
D6
D7
R204
VA205
R210
(2012)
SP204
C212
2V8_VMEM
(2012)
1
100K
0
C204
10u
0
R205
82K
R216
NC
C202
10u
SP202
40POLY
27
26
25
24
23
22
21
20
DATA8
DATA9
DATA10
DATA11
DATA12
DATA13
DATA14
DATA15
2
R257
_WR
_IRQ
VA204
10K
13
1K
CN202
1
C203
39p
VOUTNORN
28
3
SP205
R212
EQ2
0
SP206
R244
10K
R202
R256
VOUTNORP
NC
_WR
_MIDI_IRQ
16POLY
12
VA202
R244
EQ1
C201
0.01u
R203
33K
HPOUT_L
VA201
A
11
10
HPOUT_R
SP203
1
4 CLK1
_RST
30
A0
31
_RD
29
5 _CS
NC
SP201
0
VA203
R201
13MHz
_MIDI_RST
ADD0
_RD
_MIDI_CS
2V8_VMEM
CLOSE TO MIC
VBAT
3V0_VLCD
B
B
2
C220
2.2u
(2012)
1
HFK_EAR
2
U202 LP3981ILD-3.3
1
6
VOUT
VEN
3
VIN
3
5
BYPASS
NO
COM
GND
NC
6
C219
0.1u
HFK_AUXOP
5
AUXOP
4
C221
0.1u
HFK_EAR
7
15
U204
HEADSET
1
HFK
2
R217
CONNECTION
0
CN203
1
HEADSET_SPK_P
3V0_VLCD
4
VOUT_SE GND1
GND2
C222
4.7u
VMIDI_CTL
IN
VCC
D201
3V3_VMIDI
VBAT
MAX4624EUT-T
1SS352
U203
1
HFK_EAR
2
3
MAX4624EUT-T
IN
NO
COM
VCC
GND
NC
3
R218
2
VIBRATOR
6
1.5K R219
HFK_AUXON
1
Q201
2SC5585
100K
5
AUXON
4
C223
0.1u
C
C
3V0_VLCD
R220
2.2K
VBAT
3V0_VLCD
3V0_VLCD
KEY BACKLIGHT
AUXIP
11
NO1
1
7
47
47
47
47
R228
U201
LCD BACKLIGHT
MAX4599EXT-T
LD206
VCC
LD205
5
NC
GOM2
AUXIN
5
IN2
R237
2.2K
4
5
100K
3
4
GND
6
2
IN
1
R236
1.5K
RPWRON
0
R254
4
10K
KEY_BACKLIGHT
VCHARGE
C243
0.1u
D
3
R234
C233
0.1u
R235
0
6
R252
NO 6
COM
Q202 IMX9T110
1
8
LD204
C232
0.1u
N_C1
GOM1
IN1
12
V+
N_C2
2
GND1
13 GND2
3
NO2
10
LD203
LD202
R233
510K
NC2
9
NC1
D
LD201
R227
OUT
2
GND
2
3V0_VLCD
R226
3
C242
0.1u
C227 C228 C229 C230 C231 C238
27p 27p 27p 27p 27p 27p
HOOK_DETECT
R225
VIN+
1
47
VCC
MAX9075EXK-T
47
U206
5
4
VIN-
HEADSET_MIC_P
U205
MAX4695EGC
VBAT
R222
1M
4.7K
R221
3.3K
R224
10u
(2012)
R223
C224
NC
R255
C225
R250
0
HFK_AUXIN
R238
15
R239 SP207
ONNOFF
R251
NC
NA
HFK_AUXIP
HFK_EAR
HFK_EAR
0
1
CONNECTION
HEADSET
(2012)
C234 10u
J201
Headset jack
R240
4.7
5
1
3
4
2
R241
1M
Designer
Sign & Name
2
3
MODEL
Sheet/
Sheets
G3100
2/4
DRAWING
NAME
BB
Approved
Iss.
1
Date
07/28
2003
Checked
SP210
C237
47p
SP209
C236
47p
SP208
L201
100nH
VA208
C235
47p
VA207
HEADSET_SPK_P
JACK_DETECT
HEADSET_MIC_P
E
Section
HFK
4
Notice No.
Date
Name
LG Electronics Inc.
DRAWING
NO.
SPFY0060901_1.1
5
LGIC(42)-A-5505-10:01
LG Electronics Inc.
- 116 -
8.3 PMIC, LCD and I/O Connector
1
2
3
4
5
6
7
9
8
10
VBAT
2V85_VSIM
2V85_VSIM
CN402
27
R450100
100
R455
ADD0
A
NA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
LCD_RES
R452
ADD1
R448100
R441100
R442100
R443100
R444100
R445100
R446100
R447100
R440100
R439100
R438100
R437100
R436100
R435100
R434100
R433100
R449100
R432100
R453
DATA0
DATA1
DATA2
DATA3
DATA4
DATA5
DATA6
DATA7
DATA8
DATA9
DATA10
DATA11
DATA12
DATA13
DATA14
DATA15
_WR
_MAIN_LCD_CS
3V0_VLCD
0
R451100
R454
LCD_BACKLIGHT_CTL
LCD_ID
0
R309
20K
SP301
C301
220n
R312
0
J301
1
2
3
SIM_RST
SIM_CLK
A
5
VCC GND
RST
CLK
6
7
VPP
IO
SIM_SOCKET
SIM_DATAOP
SP302
SP303
SP305
SP304
C303
NC
C302
1000p
C304
NC
28
B
C460 C461 C462 C463 C464 C465 C466 C467 C468 C469 C470 C471 C472 C473 C474 C475 C476 C477 C478 C479
27p 27p 27p 27p 27p 27p 27p 27p 27p 27p 27p 27p 27p 27p 27p 27p 27p 27p 27p 27p
2.2u
C481
B
VBAT
2.2u
C480
BATTERY CONNECTOR
(2012) (2012)
CN303
1
2
3
BATT_TEMP
VBAT
3V0_VLCD
R327
100K
VBAT
3
2
8
5
20
VTCXO
1
TPCF8102
BAT301
REFOUT
2V7_VTCXO
22
I/O CONNECTOR
2V45_VRTC
24
25
C339
39p
6
26
13
DGND
27
AGND
11
2V45_VRTC
15
16
9
28
1
GATEIN
EOC
CHGEN
CHRDET
TCXOEN
PWRONIN
VRTC
2V45_VAN
21
C341
0.22u
(2012)
C348
NC
C342
2.2u
(2012)
C343
2.2u
(2012)
C344
4.7u
(2012)
C345
0.1u
C346
0.22u
(2012)
C347
0.1u
Section
Date
Designer
07/28
2003
J_RPWON
D301
DAN222
TP413
VBAT
2
RPWRON
ONNOFF
3
E
1
Sign & Name
MODEL
DRAWING
Sheet/
Sheets
3/4
NAME
BB
Approved
TP412
Iss.
1
G3100
Checked
PWRON
R349
200K
TP411
C340
39p
C349
0.1u
GATEIN
EOC
CHG_EN
CHRDET
CLKON
RPWRON
R348
200K
C336 C337
39p 39p
SP321
D1
7
VAN
47
SP320
D2
D6
6
RESCAP
C335
0.1u
R345
SP318
D5
4
RPWRON
2V45_VCORE
SP317
G
D3
VMEM
U301
ADP3408 VCORE
2V8_VMEM
19
SP316
S
D4
5
BATSNS
2V85_VSIM
SP315
D
17
GATEDR
MVBAT
18
C
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
SP314
CUS02
7
VSIM
KEYROW0
8
VCHARGE
CN302
SP313
C334
1000p
Q301
RESET
3
NA
NA
47
47
47
47
47
47
47
4.7
4.7
100
100
SP312
12
C332
100p
R331
R332
R333
R334
R335
R336
R337
R338
R339
R341
R342
R343
R344
SP311
D302
39p
VBAT
SP310
R347
0.33
VBAT
ROWX
MVBAT
CHRIN
ISENSE
_RESET
C331
100p
R330
100K
SP309
(2012)
PWRONKEY
SIMEN
DSR
USC3
USC0
USC1
USC2
USC4
USC5
ACC_DET
RX
TX
HFK_AUXON
HFK_AUXOP
HFK_AUXIP
HFK_AUXIN
R340
100
C329
10u
(2012)
R329
100K
SP308
10
14
VRTCIN
2
4
POWERKEY
SIM_EN
VBAT
VBAT
VBAT_2
23
C330
0.1u
R328
100K
SP306
C
VCHARGE
C351
C327
1u
(2012)
C328
1u
(2012)
C333
10u
39p
SP307
RPWRON
C350
2V8_VMEM
SP323
U302
NCP512SQ30T1
1
5
VIN VOUT
2
GND
3
4
EN
NC
2
3
4
Notice No.
Date
Name
LG Electronics Inc.
DRAWING
NO.
SPFY0060901_1.1
5
LGIC(42)-A-5505-10:01
LG Electronics Inc.
- 117 -
D
8.4 RF Part
1
2
3
4
5
6
7
8
9
10
RF2.85V
R401
15K
RXIP
C401
100p
TX_RAMP
C402
39p
RXIN
R402
10
R403
0
RXQP
RF2.85V
ANTENNA
C406
1000p
OUT401
A
C403
22p
C405
100p
C404
0.1u
RXQN
GND
R404
100
C482
0.5p
TXPA
C407
27p
R405
100
L413
27p
RF2.85V
C411
0.1u
C414
10u
2012
1
2
8
4
10
16
L409
2.7nH
C451
1.5p
51
53
50
UHFTune
VCCUHF
54
55
56
57
58
52
LOP
VCC3
LON
RxQN
RxIP
RxIN
RxQP
60
61
59
NC4
NC7
NC5
44
43
TP402
TP404
TP406
TP408
TP409
42
PLL_LE
PLL_CLK
PLL_DATA
40
PLL_PD
39
38
C430
22p
C431
10p
C426
8200p
2012 FILM
R417
10
41
C428
0.1u
RF2.85V
37
RF2.85V
36
35
34
33
R418
10
R419
10
T_H
G1
C
32
LPFADJ
CapQP
CapQN
31
45
C438 C439
22p 0.1u
470p
30
46
C437 C440
22p 0.1u
R423
39K 1%
C443
C442
470p
28
29
CapIN
CapIP
TxFN
TxFP
VCC2
27
26
25
24
TxQN
23
TxQP
TxIP
TxIN
22
FILTN
1608
COIL
GND1
48
47
R413
2.2K
C424
680p
C446
22p
T_H
C447
0.1u
7
L411
3.3nH
TXQN
5
C449
100p
C450
0.5p
2
8
IN2
OUT2
G4 G3 G2 G1
4
3
C448
27p
6
GSMSEL
OUT1
GNDD
RF2.85V
49
RF2.85V
C444
1.2p
IN1
FREF
VCCF
VCCD
LNAPCSIN
L407
82nH
FL402
FAR-G6CS-1G8425-L257
1
GNDFN
FEENA
C441
12p
L410
0
GNDCP
C434
10p
C435
0.1u
L408
10nH
C445
10p
UHFCPO
CX74017
1%
1608
COG
DCSSEL
SXENA
VCCFNCP
U401
18
R422
1K
C436
1n
LDMUX
21
14
15
16
17
2 11
C
PCO2
NC6
27
R420
10
DATA
LNADCSIN
17
R421
390
PCO1
GNDLNAGSM
15
RF2.85V
CLK
LNAGSMIN
13
7
LE
TxEN
TxINP
14
TP410
VDDBB
RXEN
FILTP
GND15
28
GND16
GND18
GND19
GND17
29
32
31
30
GND20
33
GND21
GND22
34
GND23
35
36
GND24
GND25
37
L406
NC
C433
1p
38
GND5
C432
47p
6
TxVCOTune
TxCPO
12
GSM_IN
GND26
1
DCS_RX
10
GND6 EGSM_RX
VRAMP
VCC1
B
VCC1
11
L404
150nH
1608
C423
220p
TXBYPASS
9
R407
5.6K
RF2.85V
UHFBYP
20
GND1
GND2
GND3
GND4
GND5
20
21
18
GND6
GND7
22
23
24
25
19
GND8
GND9
GND10
GND11
GND12
13
3
VREG
GSM_OUT
8
6
VBATT
9
L405
4.7nH
GND27
DCS_TX
EGSM_TX
GND3
GND4
5
TX_ENABLE
U402
RF3110
5
GND28
GND2
DCS_OUT
VCC_OUT
3
5
VC1
VC2
13
GND1
2
L402
1.5nH
R416
180
4
7
10
40
4
6
7
9
12
L412
10nH
R414
33
R415
180
3
TP403
TP405
TP407
RX_EN
TX_EN
BANDSEL1
C415
1u
1608
TxDCSPCS
19
L403
NC
DCS_IN
BAND_SELECT
VCC2
39
FL401
LMSP54AA-097
ANT
GND13
12
11
8
GND14
26
4dB Atten.
1
VCC4
62
RF
R412
51
VCCTxVCO
C422
1.8p
NC3
R410
510
NC2
64
R409
130
TxGSM
R406
47
63
L401
10nH
R411
390
C427
12p
C409
22p
TP401
C412
10p
NC1
NA
L414
C413
33p
C417 C418 C419 C420 C421
12p 12p 47p 47p 10u
2012
C425
22p
RF2.85V
RF2.85V
VBAT
G2
ANT
H
C410
0.1u
R408
130
G1
L
DCS
BANDSEL1
7dB Atten.
B
EGSM
C408
27p
CN401
KMS-502
A
BANDSEL1
TXQP
C452
NC
TXIN
C453
100p
TXIP
D
D
2V7_VTCXO
GSMSEL
C454
2.2u
2012
DCSSEL
EGSM
H
L
DCS
L
H
X401
13MHz
AFC
R424
15K
C456
1000p
2
1
GND
VCC
CTL
OUT
U403
SN74AHC1GU04DCKR
C455
1000p
4
3
5
2
VCC
4
IN
GND
OUT
R425
100
13MHZ
3
RF2.85V
R428
NC
VBAT
RF2.85V
E
Date
Designer
07/28
2003
1M
Sign & Name
MODEL
G3100
Sheet/
Sheets
4/4
U404
R429
NC
R427
NC
R426
Section
TEMPSENSE
R430
0
R431
NC
C458
10u
2012
1
OUT
3
_ERR
5
NR
_SD
IN
GND
6
2
4
Checked
VSYNTHEN
C457
2.2u
ADP3330
Approved
2012
DRAWING
NAME
RF Circuit
DRAWING
NO.
SPFY0060901_1.1
C459
470p
Iss.
1
2
3
4
Notice No.
Date
Name
LG Electronics Inc.
5
LGIC(42)-A-5505-10:01
LG Electronics Inc.
- 118 -
9. PCB LAYOUT
9.1 Rear Part
- 119 -
9.2 Front Part
- 120-
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