LG -T315i Service Manual page 124

RF PART
GND403 GND404 ANT403
R414
1
C487
DNI
C423
1n
C424
7p
6.8n C425
C421
1.2p
TX_EN
MODE
(TX_ENABLE)
LOW POWER MODE LOW
RX1(EGSM_RX)
LOW
RX2(GSM850_RX) LOW
RX3(PCS_RX) LOW
RX4(DCS_RX) LOW
GSM850/900_TX HIGH
DCS/PCS_TX HIGH
FM Radio(LNA)
FM_LNA_EN
ANTPAD_GD880
FEED
ANT402 C486
DNI
DNI
LGE Internal Use Only
R413 1K
TX_RAMP
TX_EN
BS1
BS2
BS3
C461 C454 C464 C463 C466
1n 1n 1n 1n 39p
17 1
GPCTRL2 GND1
16 2
GND9 GND2
SW401 15 U404 3
GND8 RFIN_LB
14 4
G2
ANT RF ANT GND3
13 5
G1 DCS
RX4 RFIN_HB
PCS 12 6
C470 RX3 GND4
C471
DNI
1.2p
GSM850
EGSM
FL403
C456 33p DCS
1 8
IN_1842_5 OUT_1842_5
0.5p
C457 33p PCS
4 9
IN_1960 OUT_1960
L402
2 7
GND1 GND2
3 6
GND3 GND4
5 10
GND5 GND6
1805M1880M,1930M1990M
FL402
GSM850
C458 33p
1 8
IN_881_5 OUT_881_5 33n
C467 33p
EGSM 4 9 L407
IN_942_5 OUT_942_5
2 7
GND1 GND2
3 6
GND3 GND4
5 10
GND5 GND6
869M894M,925M960MHz
BS3 BS2 BS1
(GPCTRL2) (GPCTRL1) (GPCTRL0)
LOW LOW LOW
HIGH LOW LOW
LOW HIGH LOW
LOW HIGH HIGH
LOW LOW HIGH
LOW HIGH LOW
LOW HIGH HIGH
L417
L401
WLAN_RESET
22n
22n
C430
1u
R421
5.1ohms
.
R410 R409
24K 270ohms
C489 330p
C431
C432 330p
3
1 Q401
470n
2
C427
15p
ZD401
C428
R408
4.7K 470n
FM_ANT
VBAT
C453 C455
C465 C459
10n 33p 4.7u 4.7u
L416 4.7n
C450 56p
GSM_OUT
C451 22p L404 3.3n L403 3.3n
DCS_PCS_OUT
L405
1.5n
C462
FL401
1p 3.3p
3
OUT IN
4
C437 GND2 GND1
2450MHz
C446
C452
DNI
RX34X C445
1n
1.8n
0.5p
CLK32K
L408
C460
BT_CLK
RX34
1n
DBB_BT_INT TP4
BT_DBB_INT
L409
TP7
FSYS_EN
RX12X
8.2n
L410
12n
L406
RX12
8.2n
GND401 ANT404
BT & WIFI Module (LBEH19UNBC_MURATA)
100p
C402
C469
100p
R403
0.5p
C488
1u
R422
5.1ohms 1V8_VDD R415
100K
. BT_RESET
WLAN_REG_ON
R423 R424
SPI_MOSI
24K 270ohms SPI_CS
C491
3
FM_ANT_2
1 Q402
470n
2
C490
R425
4.7K 470n SPI_INT
SPI_MISO
SPI_CLK
CLK_REQ
1V8_VDD
TCXO LDO
CLK_REQ
R404
100K
- 124 -
BLUETOOTH
VAUX 1V8_VDD
C438 10n FB404 600
C449 2.2u
C441 10p
C443 C442 C440 10n
2.2u 2.2u
C481
C436
10p 1u
C444 1V8_VDD
R412 G4
1n
RES
15K
1
D1 B4
RFP RST_N BT_RESET
2 B2
REG_EN
F7 C4
SCL TM0
E7 F3
SDA TM2
A8 F6
SPIM_CLK PCM_IN PCM_TX
C7 G6
SPIM_CS_N PCM_OUT PCM_RX
U405 F4
PCM_CLK PCM_CLK
C433 1n
A4 F5
LPO_IN PCM_SYNC PCM_SYNC
C434 1n G2 C8 TP6
XIN UART_TXD
G3 D8
TP5
XOUT UART_RXD
D7
TP1
UART_RTS_N
B5 E8
TP3
GPIO_0 UART_CTS_N
B3
TP2
GPIO_1
E6
TCXO_OR_OUT_GPIO_5
E3
TCXO_OR_IN_GPIO_6
B7
GPIO_7
CLK32K
R402
DNI
1
GND11
2 46
2G4_ANT GND9
3 45
GND14 NC5
4 44
DBB_BT_INT BT_WAKE_B GND2
5 43
BT_DBB_INT BT_HOST_WAKE_B OSC_OUT C483
1n
6 42
NC4 OSC_IN
XTALP
7 41
NC2 GND15
8 40
U401 NC7
NC8
9 39
SEL_SPI/SDIO NC3
TP411 10 38
BT_ENABLE NC1
11 37
TP407
WL_ENABLE NC9
TP405 12 36
WL_HOST_WAKE_N GND8
TP412
13 35
WL_WAKE_N VBAT2
TP404 14 34
SDIO_CMD/SPI_DI VBAT1
TP403 15 33
SDIO_D3/SPI_CS GND3
16 32
SR_VLX1
SDIO_D2
17 31
GND12 SR_AVDD_2P5
30
C410
GND10
0.1u
C478
L415
1u
3.3u
TP406
TP401 4.7u
TP402 C484
TP408
TP409
C472 C473 C474 C475 C476
DNI 4.7u 4.7u 4.7u
R401 DNI
GND
0
C408
0.1u
WiFi TCXO
VDD_TCXO
VBAT
VDD_TCXO
X401
U402
VCC GND
4 2
4 1 XTALP OUT NC
VDD VOUT 3 1
3 2
26MHz
CE GND
C419 TG-5010LH-87N
C418 C417 1u
1u
1u
7. CIRCUIT DIAGRAM
BT_RXD
BT_TXD
BT_CTS
BT_RTS
C409
C496 C497
10u
10u 10u
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Only for training and service purposes