LG -E400 Service Manual page 158

BT/WI-FI FRONT-END
ANT901
BT_WLAN_RF
100p
L905
L906
C946
DNI
100n
3
WLAN_RX
WLAN_TX
4 BT_TRX
WLAN_SW_[0] TR_SW0
2
WLAN_SW_[1] TR_SW1
12
GND1
WLAN_SW_[2] TR_SW2
GND2
7
GND3
BT_WLAN_RF ANT
11
GND4
WLAN_PWR_DET_IN CPL
PGND
C911 C912 C913
2400MHz,2500MHz
10p 10p 10p
ANTENNA SWITCH MODULE LOGIC
WiFi RX-ANT
WiFi TX-ANT
BT-ANT
Wi-Fi : WCN1314
SLEEP_CLK
WLAN_RST_N
WLAN_ACTIVE
BT_PRIORITY
BT_ACTIVE
WLAN_CLK_WCN
WLAN_RF_RX
WLAN_PWR_DET_IN
WLAN_CLK_REQ_WCN
WLAN_SW_[0]
WLAN_SW_[1]
WLAN_SW_[2]
WLAN_CMD
WLAN_CLK
WLAN_SDIO[3]
WLAN_SDIO[2]
WLAN_SDIO[1]
WLAN_SDIO[0]
LGE Internal Use Only
L900
WLAN_RF_RX
3.9n
C906
C907
DNI
DNI
FL900
L901
L903
1 FM_ANT
WLAN_RF_TX
5 68n
2.4n
C908 C909
6
DNI DNI
8 C910 L904
82n
9 47p
10
13
BT_RF_QCT
C916
1.8n
DNI
C915
SW0 SW1 SW2
HIGH LOW LOW
LOW HIGH LOW
LOW LOW HIGH
18 28
SLEEP_CLK DNC2
27
GND_D1
9
DNC1
25 82
GND_D2 PLL_EXT_LPF
26
GND_D3
19
WLAN_RST_N
C932
39 75
WLAN_ACTIVE GND_A
470p
20
BT_PRIORITY
29 84
BT_ACTIVE RF_TX_DA
71
RF_TX_PA WLAN_RF_TX
41
C937 1n
TCXO_IN
80
RF_RX
U901
87
PDET_IN
WCN1314-0-87WLNSP-TR-0D
45
EAN62416201 GND_A1
22 56
PA_EN GND_A2
17 53
WLAN_CLK_REQ GND_A3
33
GND_A4
12
TR_SW_EN_0
21
TR_SW_EN_1
11
TR_SW_EN_2
23
SDIO_CMD
14 63
SDIO_CLK REXT
15
SDIO_DATA3
6
SDIO_DATA2
16
SDIO_DATA1
13
SDIO_DATA0
C904
R900
22p
VREG_MSME_1.8V
R901 R902
2.2K 2.2K
6
GND1
33
BT_RST_N
SYS_RST_N
28
I2C_COMMON_SDA_WCN I2C_SDA
29
I2C_SCL
I2C_COMMON_SCL_WCN
L902 82n 43
FM_HRX_IN
49
FM_PRXTX_IO
BT_PCM_OUT
46 U900
R903
BT_PCM_IN FM_I2S_SD
56
DNI BT_PCM_SYNC FM_I2S_WS WCN2243
51
BT_PCM_CLK FM_I2S_SCK
EAN61966101
58
BT_PCM_OUT BT_PCM_IN
TP900 TP901
42
BT_PCM_CLK BT_PCM_CLK
53
SLEEP_CLK SLEEP_CLK
36
BT_UART_TX
BT_UART_RXD
47
BT_UART_RX BT_UART_TXD
40
BT_UART_RTS BT_UART_CTS
57
BT_UART_CTS BT_UART_RTS
R904
TP902 TP903 TP904 TP905
1M
+1V2_MSM_A2_WCN R1 0
+1V2_WLAN_WCN R2 0
VREG_MSME_1.8V
+1V3_MSM_A3_WCN
+1V8_WLAN_TCXO
+3V_WLAN_WCN
- 158 -
BT/FM Module : WCN2243
31
VDD_IO
24
VDD_XO_BIAS
14
VREG_DIG
4
VREG_ANA
10
VDD_LDO_IN
54
VDD_FM_1P3_1
37
VDD_FM_1P3_2
50
VDD_FM_1P3_3
55
VDD_FM_1P3_4
21
VDD_DIG_1P3
32
VDD_FM_DAC
19
VDD_BT_PA
13
VDD_BT_1P3_1
12
VDD_BT_1P3_2
15
VDD_BT_1P3_3
5
VDD_BT_1P3_4
C921 C922 C925
C917 C918 C919 C920 C923 C924 C926 C927
0.1u
WiFi : WCN 1314
C928 GND_A21
10n
GND_D1
GND_D2
GND_D3
31
VDD_CORE1 GND_D4
46
C929 VDD_CORE2 GND_A1
48
C930
VDD_CORE3 GND_A22
4.7u 0.1u
5
VDD_CORE_AON1 GND_D5
36
VDD_CORE_AON2 GND_D6
38
VDD_CORE_AON3 GND_D7
C931
GND_D8
8
VDD_IO
0.1u
GND_A2
2
VDD_FEM GND_A23
R3 0 U901
EAN62416201
GND_A3
C933
4
C934
C935 C936 VDD_SDIO
100p
100n
2.2u 220n GND_A4
85
VDD_RFA10 GND_D9
77
VDD_RFA11 GND_A5
GND_A6
78
VDD_PA GND_A7
GND_A8
51
VDD_TCXO GND_A9
35
VDD_RFA1 GND_A10
FB900
74
VDD_RFA2 GND_A11
66
VDD_RFA3 GND_A12
81
C938
VDD_RFA4
67
10n
VDD_RFA5 GND_A13
54
VDD_RFA6 GND_A14
76
VDD_RFA7 GND_A15
62
VDD_RFA8
49
VDD_RFA9 GND_A16
C939 C940 C941 C942 GND_A17
22u 10n 100p 100p GND_A18
GND_A19
GND_A20
FB1
R4 0
60
C943 C944 C945
2.2u 0.1u 100p colse to pin78
Copyright © 2012 LG Electronics. Inc. All right reserved.
7. CIRCUIT DIAGRAM
VREG_MSME_1.8V
+3V_WLAN_WCN
79
3
7
1
10
30
58
24
32
37
47
70
64
86
52
34
60
72
73
61
44
65
83
50
59
68
69
57
55
42
40
43
Only for training and service purposes