LG -E450 Service Manual page 207

WiFi/BT/GPS
3
C616 5p
G3
4
OUT
G2 G1
5
1575.42 MHz
L603
L604
L628
3.9n
DNI
2.2n
C647 1n
L629 L624
C657
100p 1n 2p
LGE Internal Use Only
+2V8_TCXO_LDO
LNA for the GPS
6.8n
L601
Optional LNA
External LNA should be located near Antenna
FL600
C615 C614
L702 6.2n
1 C717 33p
IN 18p 0.1u
2
C621
DNI GND VDD C718 33p
R603
3 5 RF_INP_GPS
S_D FIL_OUT
2 4
1
U601
L622
. DNI
GPS_LNA_EN
C627
6.8p Near To LNA
SPDT for BT&Wi-Fi
Close to Pin A5
C639 18p
WIFI_RX_BT_TRX
L606
DNI
C645
FL601 3.3p
VCTL2 ANTSEL_0
FL602 4
C648 100p
OUT IN IN GND
3 1 5 2
VCTL1 ANTSEL_1
6
C649
3.3p
Close to Pin A3
C651 18p
WIFI_TX
C652 C653
DNI DNI
R600
1M
1. GND_SMPS, which is DC-DC power ground should be directly connected
to battery ground, instead of sharing ground with main GND
2. L2(AVDD55_SMPS) & K2(GND_SMPS) Line shoud be more than 0.2 width
F12
BT_PRIORITY
E11
BT_ACT
A6
BTTRX_IN
A7
BTTRX_IP
D11
PCM1CLK TP602 PCM1CLK
F11
TP603
PCM1OUT PCMOUT
G12
TP605
PCM1IN PCM1IN
H9
TP606
PCM1SYNC PCM1_SYNC
G11
TP607 SD2_DAT1
UART1_UTXD3
F6
SD2_DAT2
UART1_URXD3 J10
TP608 SD2_DAT3
F10
SD2_CMD
G10
SD2_CLK
F7
SD2_DAT0
K9
+1V8_VIO_MTK
DVDDIO_SD2
B6
BT_AVDD33 AVDD33_BTTX
B7
AVDD13_BTRX
BT_AVDD13
A9
AVDD13_BTAFE
Close to Pin A9 B9
AVSS13_BTAFE_1
C624 C625 C626 B5
AVSS13_BTSXAFE
B8
10p 100n 100n AVSS13_BTSX_1
A8
AVSS13_BTSX_2
E8
GND3
B11
NC1
D13
OSC1_GPS OSC1_GPS
E13
GPS_SYNC SYNC
H10
ECLOCK
E12
DUTY_LOSS
B13
RF_INN_GPS
A13
RF_INP_GPS RF_INP_GPS
F4
GPIO1_25
F9
GPIO1_24
G9
GPIO1_26
G8
GPIO1_27
G7
GPIO1_28
C13
+2V8_TCXO_LDO AVDD28_OSC
C12
GPS_AVDD13 AVDD13_SXIF_GPS
A12
AVDD13_LNA_GPS
C11
AVSS28_OSC
A11
C634 C635 AVSS13_RX_GPS
B12
AVSS13_SXIF_GPS
100n 100n
.
+2V8_TCXO_LDO
X600 7L26002009
C655 1n
OSC1_GPS 3 4
OUTPUT VCC
2 1
GND GND_NC
C654
26MHz
1u
1. Fillcut TCXO area including Lay 8th,7th,6th
2. GND clearance over 1.5mm surrounding TCXO
- 207 -
7. CIRCUIT DIAGRAM
M5
EXT_INT_N
H1
WIFI_INT_B TP600 WIFI_INT_B
D10
BGF_INT_B TP601 BGF_INT_B
E9
ALL_INT_B
K11
OSC_EN
K12
TP604
SYSRST_B SYSRST_B_6620
J5
FB600 120
VDDK_1 CLDO
F8
VDDK_2
J4
DVDDIO18 +1V8_VIO_MTK
E10
DVDDIO28
+2V8_VIO_MTK
K10
PAD_32K_OUT
C618 C619 C620
D12
FSOURCE
M3 100n 1u 1u
XTEST
H6
GPIO1_10
J6
GPIO1_11
J7
GPIO1_9
H3
GPIO1_13
R719
L7 RTCCLK_GPS
GPIO1_12
1
L5 TP609
U600 GPIO1_14
G13
RTCCLK_O
DNI
F13
RTCCLK RTCCLK
H13
R718
VRTC +2V8_VRTC_MTK
J13
AVSSRTC R722 DNI
L11
FM_AUIN_R +2V8_VIO_MTK
Close to MT6575
L10 R721 0
FM_AUIN_L
N9
FM_AUOUT_R C628 1u
FM_AUOUT_R
N10 Keep ther FM_RX_IN_N and FM_ANT in
FM_AUOUT_L C629 1u
FM_AUOUT_L
N13 differential trace to connect to audio jack
FM_TX_OUT R720 100p
M13
FM_RX_IN_N FM_RX_IN_N L701 27n
L13
FM_RX_IN_P
J12
I2S_DATA_IN I2S_DATA_IN
J11
I2S_DATA_OUT
H8 C632
I2C_SDA
D8
I2C_SCL 10p
H12
I2S_CLK I2S_CLK
H11
I2S_WS I2S_WS
M10
NC2
N11
FB601 120 FM_AVDD28
FM_VDD28
M11
FB602 120
FM_VDD13 FM_AVDD13
N12
FM_VSS2
L12 C636
FM_VSS1 C637
0.1u 0.1u C638
1u
3. Make star connection for AVDD13 (Both E6,E7 and E4,C4,G1)
C646
100n
Copyright © 2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
FM_ANT