LG TracFone LG840G Service Manual page 137

BCM4330_2.4GHz(QCT & IFX Only)_COB_With FM RX_Ver0.1
VDD_LN
FB801 120
VDD_BT
FB803 120
VDD_WRF
C819
10p
R803 15K E4
WRF_RES_EXT
C829 10p A6
RX_BG WRF_RFIN_2G
A5
WRF_RFOUT_2G
TX_WLBG B3
C830 1.2p
WRF_A_TSSI_IN
D5
WRF_G_TSSI_IN
L805
M3
3.9n
SW_BT_TX RF_SW_CTRL_0
M2
SW_WL_BT_RX RF_SW_CTRL_1
L3
SW_WL_TX RF_SW_CTRL_2
K5
EXT_LNA_GAIN RF_SW_CTRL_3
L4
RF_SW_CTRL_4
M1
RF_SW_CTRL_5
M4
RF_SW_CTRL_6
K3
RF_SW_CTRL_7
A11
FM_AOUT1
A12
FM_AOUT2
B12
FM_TX
E12
FM_RXP
D12
FM_RXN
E6
UART_TXD BT_UART_RXD
E7
UART_RXD BT_UART_TXD
F6
UART1_CTS_N BT_UART_RTS_N
D6
UART1_RFR_N BT_UART_CTS_N
G9
BT_I2S_CLK
G10
BT_I2S_DI
H8
BT_I2S_WS
H9
BT_I2S_DO
E5
BT_PCM_CLK BT_PCM_CLK
F4
BT_PCM_IN
BT_PCM_DOUT
G5
BT_PCM_OUT
BT_PCM_DIN
F5
BT_PCM_SYNC BT_PCM_SYNC
F9
HOST_WAKES_BT BT_GPIO_0
H11
BT_WAKES_HOST BT_GPIO_1
G12
BT_GPIO_2
H12
BT_GPIO_3
G11
BT_GPIO_4
H10
BT_GPIO_5
VREG_MSME_1.8V
VREG_MSMP_2.6V
U805
1 8
VL VCC WLAN_SDIO[0]_BCM
2 7
IO_VL1 IO_VCC1
WLAN_CLK_BCM WLAN_CLK WLAN_SDIO[1]_BCM
3 6
WLAN_CMD_BCM IO_VL2 IO_VCC2 WLAN_CMD WLAN_SDIO[2]_BCM
4 5
GND EN
WLAN_SDIO[3]_BCM
C866 C867
0.1u 0.1u
LGE Internal Use Only
FROM THE LGP690
+VPWR
FB804
600
C807
0.1u
C857
0.1u
J1
HSIC_AVDD12
K4
VDDIO_RF
K6
WL_VDDIO
J7
BT_VDDIO
K7
VDD_ISLAND
L7
SDIO_DATA_0
M5
SDIO_DATA_1
M8
SDIO_DATA_2
L8
SDIO_DATA_3
M6
SDIO_CLK
M7
SDIO_CMD
K1
HSIC_STROBE
L1
HSIC_DATA
L2
HSIC_RREF
F1
WRF_XTAL_OP
G1
U802 WRF_XTAL_ON
F2
WRF_TCXO_IN
H7
LPO
D4
BCM4330FKFFBG WRF_GPIO_OUT
H2
WL_GPIO_0
H1
WL_GPIO_1
H3
WL_GPIO_2
J3
EAN61970501 WL_GPIO_3
G4
WL_GPIO_4
H5
WL_GPIO_5
H4
WL_GPIO_6 NC: SDIO, 1: SPI
L9
WL_REG_ON
K9
BT_REG_ON
F10
BT_RST_N
J9
EXT_SMPS_REQ
J10
EXT_PWM_REQ
C834
A8
BT_RF
D7
BT_CLK_REQ_IN
D8
BT_CLK_REQ_POL
E8
BT_CLK_REQ_MODE
F12
BT_CLK_REQ_OUT
A1: WRF_RFIN_5G, A2:WRF_RFOUT_5G
VREG_MSME_1.8V
VREG_MSMP_2.6V
C874 100p
U806
1 11
VL VCC
2 10
I_OVL1 I_OVCC1 WLAN_SDIO[0]
3 9
I_OVL2 I_OVCC2 WLAN_SDIO[1]
4 8
I_OVL3 I_OVCC3 WLAN_SDIO[2]
5 7
I_OVL4 I_OVCC4
WLAN_SDIO[3]
C864
C865
0.1u
0.1u
VDD_3V3
C859 10p C858 10p
U801
9 1
SW_BT_TX
C_BT TX_IN
8 RF5501 2
TX_BT BT GND1
7 SMZY0028001 3
GND3 GND2
C860
10p
L804 2.2n
C826 10p
C825
0.1u
C827
C828
0.1u
0.1u
VDD_3V3
VREG_MSME_1.8V
WLAN_SDIO[0]_BCM
WLAN_SDIO[1]_BCM
WLAN_SDIO[2]_BCM
WLAN_SDIO[3]_BCM
WLAN_CLK_BCM
WLAN_CMD_BCM
X801 Q22FA1280013000
4 3
C833
1 2
R805 220 37.4MHz
15p
SLEEP_CLK C832
18p
WLAN_WAKEUP_HOST
WLAN_RST_N
BT_RESET_N
10p
TX_BT
FB807
VREG_TCXO_2.85V
60
C840
10p
U804 ALM-2506
7
PGND
1
close to antenna
NC1
ANT801 FL802 3 6
L849 1.8n L808
VDD
G3
1 4 2
IN OUT RF_IN
G1 G2 6.8n 5
RF_OUT
2 5 3
NC2
C852 4
L809
C853 VSD
DNI
6.8n
DNI EUSY0400201
FB808
1575.42 MHz
GPS_LNA_EN
C855
10n
- 137 -
FL801
ANT800 GND800
LFB212G45CG7D227 C803
C801
C872 10p C873 10p
1 3
IN OUT
10p
100p
L801
C868 L811 C869 C870 C804
DNI DNI DNI
9.1n DNI 100n
TX_WLBG
RGR6240(QSC6270 Only)
FROM THE Q3H
R806
2.2
C835 C836
10u 1n
GPS_SSBI
C843
L806
XO_OUT_GP2
3.9n
10n
C844
C845
22p
120p
L807
C846
9.1n
33p
E4
B9417
RF_P U803
2 3
C851 FL803 C847
C848
1 G1 O1
IN DNI RGR6240
DNI
G2 O2
100p E5
1575.42MHz
5 4
RF_N
EUSY0374001
C854 L810
9.1n
33p
60
Copyright © 2012 LG Electronics. Inc. All right reserved.
7. CIRCUIT DIAGRAM
VREG_RFRX2_1.3V
C837 C838 C839
100p 0.1u 1n
VREG_MSME_1.8V
R807
10
C841 C842
100p 1u
B3 R809
GPS_ADC_CLK_XO
ADC_CLK
51
B4
BLANK
A4 R811 51
DI GPS_ADC_I
A5 R812 51
DQ GPS_ADC_Q
C3
RBIAS
R814
10K
close to RGR6240
Only for training and service purposes