LG GT500 Service Manual page 182

7. CIRCUIT DIAGRAM
1 2
High Speed USB Interface
VBAT
10V
A
C3
ACC_GP_USB_CS CHIP_SEL
TP500 A4
ACC_USB_HS_IN_CLK CLOCK
B1
USB_DATA(0) DATA0
TP501 A1
USB_DATA(1) DATA1
A2
USB_DATA(2) DATA2
A3
U502
ACC_USB_HS_DATA(3) DATA3
A5
ISP1508AET
ACC_USB_HS_DATA(4) DATA4
A6
ACC_USB_HS_DATA(5) DATA5
B6
ACC_USB_HS_DATA(6) DATA6
C6
ACC_USB_HS_DATA(7) DATA7
D5
ACC_USB_HS_NXT NXT
D6
B ACC_USB_HS_STP STP
E5
ACC_USB_HS_DIR DIR
E1
CFG0
E6
REF1V8
C512 C513
4.7u 0.1u
USB Transceiver
ESD / EMI Filter
C
D
34 pin connector To VGA FPCB
E
CN503
1
2
F
SYSCLK0
3
4
TOUCH_X+
5
TOUCH_X-
6
TOUCH_Y+
7
TOUCH_Y-
8
9
TOUCH_Y- : GND line shielding to CN 10
APP_GP_VGA_SDN
11
APP_I2C_SDA
12
APP_I2C_SCL
13
CI_RES_n
14
15
SPK_RCV+
16
SPK_RCV-
17
ENBY0040301
GB042-34S-H10-E3000
G
H
1 2
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3 4 5
MUIC Circuit
VDDE_1V8
VBAT
C500 C501
0.1u 4.7u
USB_DM
C4
TEST USB_DP
B5
VCC_IO1
B2
VCC_IO2 APP_ACC_UART_RX
C2
RREF APP_ACC_UART_TX
C1
DM USB_DM
D1 C505 0.1u FB500
DP USB_DP MIC2P
E2 R505 10 FB501
FAULT HS_EAR_L
D3 R506 10 FB502
ID HS_EAR_R
B3
CFG2
B4 C506 C507 C508
CFG1
D4
PSW_N 22p
R509 22p 22p
F4
VBUS VBUS
E3
REG3V3 1K
F5 Close to MUIC
TP502
XTAL1 USB_XTAL1
F6
XTAL2
VDDE_1V8
1%
APP_GP_USW_SCL
APP_GP_USW_SDA
APP_GP_USW_INT
VDDE_1V8
KNATTE2-C2 FL501
D2 A1 R513 DNI
APP_UART_RX DTMS_I DTMS_E
C3 A3 R515 0
ACC_UART0_RX CTMS_I CTMS_E
D4 A4 R517 0
ACC_UART0_TX CFMS_I CFMS_E
D3 A2 R518 DNI
APP_UART_TX DFMS_I DFMS_E
C5 B5
DCIO_I DCIO_E
D5 A5
VPPFLASH VPPFLS_I VPPFLS_E
D1 B1
ONSWB_n CTS_ON_I CTS_ON_E
Download Point And TP Test Point
If VBUS not used, then remove
CAM_AVDD_2V8 CAM_DVDD_1V8 If VBUS not used, then remove
34
33
32
31
30
CI_DATA[0]
29
CI_DATA[1]
28
CI_DATA[2]
27
CI_DATA[3]
26
CI_DATA[4]
25
CI_DATA[5]
24
CI_DATA[6]
23
CI_DATA[7]
22
CI_HSYNC
21
CI_VSYNC
20
VPPFLASH_E
19
CI_PCLK
18
CTS_ON
C523 C525 APP_ACC_UART_RX
0.1u 0.1u
APP_ACC_UART_TX
OTP_A
VBAT
3 4 5
6 7 8
Micro USB Interface
MUIC VBUS
VBUS
D2 D5
BAT VB
G2
A4 C5 4
DN1 COM1 USW_DM
A5 B5
DP2 COM2 USW_DP OUT
2
U501
C504
R501 0 B3 B4 R502 0 NFM21PC105B1A3 FL500
MAX14526EEWP_TCC6
U1 UID USW_ID 1u
R503 0 A3
U2 R504
B1 VBAT
RES
A1
MIC 2.2K
D4 D1
AUD1 CAP
D3 R507 DNI
AUD2
C4
GND
TI : PD = USB, PU = UART
TP602 A2 C3 R508 DNI
ISET IC
MAXIM : NA = USB, PU = UART
C509
If TI, then 10nF
4.7u
If Maxim, then 4.7uF
OJ
OJ500 OJ501
APP_ACC_UART_RX
APP_ACC_UART_TX
VPPFLASH_E
CTS_ON
2.5G 3G
1
GND GND
2
APP_ACC_UART_RX RX RX
3
APP_ACC_UART_TX TX TX
4
VBUS VCHAR
NC1
5
CTS_ON ON_SW
ON_SW
6
VBAT VBAT
7
VBUS NC2 PWR
8
NC3 URXD
9
NC4 UTXD
10
VPPFLASH_E DSR
11
RTS
12
CTS
URT500
VBAT
DOWNLOAD POINT
TP607
TP605
TP606
TP603
TP604
TP608
TP609
Test Point
6 7 8
- 183 -
9 10 11
FM_ANT
9
L500
C502
VA500
G1
3 U500
82nH DNI
ULCE0505C015FR
IN DRAIN SRC
1
4 5
CNTRL GATE
3 6
GND OUT
2 7 6
8
IN VCC
1 8 10
CN501 12
DRAIN_THERMAL
9 14
NUS3065MUTAG
1
2
USW_DM
C510 C511
3
USW_DP
4
USW_ID
2012 5
1 uF 22p
7
Close by uUSB CONN
9
11
13
15
Backlight Charge Pump
VBAT
U604 AAT3169IFO-T1
4 7
C1+ C2+
5 8
C1- C2-
R631 0
6
OUTCP WLED_PWR
9
IN
11
D1 WLED1
12
D2 WLED2
3 13
APP_GP_BL_EN EN_SET D3 WLED3
14
D4 WLED4
10 1
GND D5 WLED5
15 2
PGND D6
C635 C634
1u 1u
9 10 11
12
A
CN500
1
B
2
C
D
E
F
G
H
12
LGE Internal Use Only