LG -E445 Service Manual page 191

LNA for the GPS
FL701
3
ANT701
C721 1.8n L703 1.8n
G3
C720 100p 4 1
OUT IN
G2 G1
5 2
1575.42 MHz
L706
L705 C722
1p
100p L704 DNI
DNI
.
ANT702 FL703
C754 2n
C745 100p
C746
OUT IN
3 1
L709
L710 L711 L712 L713
100p DNI DNI
3.9n 1.2n
C748
0.5p
BT&WIFI Notch filter
LGE Internal Use Only
+2V8_TCXO_LDO
L702 6.8n
C718
C719
18p
0.1u
GND VDD
R705 3 5 C726 33p
S_D FIL_OUT RF_INP_GPS
2 4
1K
U702
L707
4.7n
GPS_LNA_EN
C729
6.8p
SPDT for BT&Wi-Fi
Close to Pin A5
C737 100p
WIFI_RX_BT_TRX
L708
DNI
C743
8.2p
ANTSEL_0
VCTL2
4
2.7n
IN GND
5 2
VCTL1 ANTSEL_1
6
C747
8.2p
Close to Pin A3
C749 22p
WIFI_TX
C750
C751
DNI
DNI
+2V8_TCXO_LDO
X701 TG-5025CG-26M
1 4
NC VCC
5 6
TP1 TP2
2 3
GND OUT
26MHz
1. Fillcut TCXO area including Lay 8th,7th,6th
2. GND clearance over 1.5mm surrounding TCXO
3. GND clearance over 2mm direction to MT6620 side
4. Spacing between TCXO and MT6620 over 2mms as possible.
R701
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 TP703 PCM1CLK
F11
PCM1OUT TP704 PCMOUT
G12
TP706
PCM1IN PCM1IN
H9
TP707
PCM1SYNC PCM1_SYNC
G11
TP708 SD2_DAT1
UART1_UTXD3 F6
SD2_DAT2
J10
UART1_URXD3
TP709 SD2_DAT3
F10
SD2_CMD
G10
SD2_CLK
F7
SD2_DAT0
K9
+1V8_VIO_MTK DVDDIO_SD2
B6
BT_AVDD33 AVDD33_BTTX
B7
BT_AVDD13 AVDD13_BTRX
A9
AVDD13_BTAFE
B9
AVSS13_BTAFE_1
C725 B5
C723 C724 AVSS13_BTSXAFE
B8
AVSS13_BTSX_1
10p 100n 100n
A8
AVSS13_BTSX_2
E8
GND3
B11
Close to Pin A9
NC1
D13
OSC1_GPS
OSC1_GPS
E13
SYNC
GPS_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
(5/23)
GPIO1_28
C13
1 R712 AVDD28_OSC
+2V8_TCXO_LDO
C12
GPS_AVDD13 AVDD13_SXIF_GPS
A12
AVDD13_LNA_GPS
C11
AVSS28_OSC
C732 C733 A11
AVSS13_RX_GPS
B12
100n AVSS13_SXIF_GPS
100n
DAISY_CHAIN
1u
C753
1n C752
OSC1_GPS
- 191 -
M5
EXT_INT_N
H1
TP701
WIFI_INT_B
D10
TP702
BGF_INT_B
E9
ALL_INT_B
K11
OSC_EN
K12
SYSRST_B TP705
J5
FB701 120
VDDK_1
F8
VDDK_2
J4
DVDDIO18
E10
DVDDIO28
K10
PAD_32K_OUT
C715
D12 C716 C717
FSOURCE
M3
100n 1u 1u
XTEST
H6
GPIO1_10
J6
GPIO1_11
J7
GPIO1_9
H3
GPIO1_13
L7
GPIO1_12
L5
U701 GPIO1_14
G13
RTCCLK_O
F13
RTCCLK
H13
VRTC
J13
AVSSRTC
L11
FM_AUIN_R
L10
FM_AUIN_L
N9
FM_AUOUT_R C727 1u
N10
FM_AUOUT_L C728 1u
N13
FM_TX_OUT
M13
FM_RX_IN_N
L13 R708 0
FM_RX_IN_P
J12
I2S_DATA_IN R709 330
J11
I2S_DATA_OUT
H8
I2C_SDA
D8
Added BB Side Another 330R! Needed checking
I2C_SCL
H12
R710 330
I2S_CLK
H11
I2S_WS R711 330
M10
NC2
N11
FB702
FM_VDD28 120
M11
FB703
FM_VDD13 120
N12
FM_VSS2
L12 C734
C735 C736
FM_VSS1
1u
0.1u 0.1u
3. Make star connection for AVDD13 (Both E6,E7 and E4,C4,G1)
C744
R713
100n
10K
R714
10K
Daisy_Chain
Copyright © 2013 LG Electronics. Inc. All right reserved.
7. CIRCUIT DIAGRAM
WIFI_INT_B
BGF_INT_B
SYSRST_B_6620
CLDO
+1V8_VIO_MTK
+2V8_VIO_MTK
RTCCLK_GPS
+2V8_VIO_MTK
FM_AUOUT_R
FM_AUOUT_L
Keep ther FM_RX_IN_N and FM_ANT in
differential trace to connect to audio jack
FM_RX_IN_N
C730 27n
FM_ANT
I2S_DATA_IN
C731
10p
I2S_CLK
I2S_WS
FM_AVDD28
FM_AVDD13
Only for training and service purposes