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Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
7. CIRCUIT DIAGRAM
5
4
6
3
7
2
8
1
U1001
VL
VCC
IO_VL1
IO_VCC1
IO_VL2
IO_VCC2
GND
EN
VDD_1V8
C1003
2.2u
VDD_3V3_ALWAYS
U1002
6
5
7
4
8
3
9
2
01
1
VCC
1
B2
1B1
A2
A1
2
S
1
S
2B0
0
B1
GND
C1006
0.1u
R1006
DNI
0.1u
C1000
V_POWERRAIL
DNI
R1005
10n
C1004
TP1001
TP
TP1005
TP
u1
10
01
C
V_USB
V_POWERRAIL
U1004
4
3
5
2
6
1
S
B1
VCC
GND
A
B0
V_AC
TP1002
TP
TP
TP1003
TP1004
TP
100K
R1002
VDD_1V8
TP1000
IC1000
2
B
1
C
2
C
C3
A2
C4
D3
D1
D4
A1
B1
A3
B4
B3
B5
A5
C5
A4
D5
D2
BAT
VB
DN1
COMN1
DP2
COMP2
U1
UID
U2
RES
MIC
AUD1
CAP
AUD2
GND
ISET
IC
L
C
S
A
D
S
T
NI
L1001
8.2n
L1002
8.2n
L1000
8.2n
L1003
8.2n
V_POWERRAIL
40
01
R
K0
01
U1005
6
5
7
4
8
3
9
2
10
1
D+
S
D-
VCC
GND
_OE
HSD2-
HSD1+
HSD2+
HSD1-
V_POWERRAIL
0.1u
C1005
0
R1008
GND
UART2_TX_T20
UART2_TX_T20
UART2_TX_T20
UART2_RX_T20
UART2_RX_T20
UART2_RX_T20
UART_SW
GEN1_I2C_SCL
GEN1_I2C_SDA
MUIC_INT_N
ONKEY_N
USB_D-_IFX
USB_D+_IFX
UART_TX
UART_TX
UART2_TX_T20_3V3
UART2_RX_T20_3V3
IFX_UART2_TXD
IFX_UART2_RXD
UART_RX
UART_RX
USB1_DN
USB1_DP
USB_T20_DN
USB_T20_DP
CRADLE_DET
CRADLE_USB_ID
TABLET_USB_ID
USB3_T20_DN
USB3_T20_DP
USB_CP_DP
USB_CP_DP
USB_CP_DN
USB_CP_DN
USB_CP_SW
MUIC
UART Level Shifter
NC
Test TP for SMT Line
90ohm matching !!
S1, S2
CRADLE_USB_ID
NC
1
0
B1
B0
NC
S
HSD1(MUIC)
ON
1B0,2B0 (AP)
1B1,2B1 (CP)
0
1
OFF
ON
OFF
UART Switch
Close to u-USB connector
USB_CP_SW
S/W
HSD2(T20:USB3)
HIGH
USB Switch
LOW
MUIC/UART Switch
¡Ø Default Path : AP UART
Differential 90ohm matching !!