LG KM710 Service Manual page 114

7. CIRCUIT DIAGRAM
MM_1V5
Always power : IO_A, IO_G, MEM Same Power
VCO = 1.5V for MPEG, others 1.2V for current
IO_A = DBB LCD Interface (1.8V)
C500
IO_B = GPIO
1u
IO_C = T-FLASH, GPIO
IO_E = CODEC, I2C (1.8V)
IO_F = CAMERA
IO_G = LCD Module Interface
MM_1V5
VDD_MEM = Internal SDRAM
ELCD_DATA(15:0)
B14
ELCD_DATA(0)
GPIO_A0
ELCD_DATA(1) C14
GPIO_A1
C12
ELCD_DATA(2)
GPIO_A2
ELCD_DATA(3) D12
GPIO_A3
D11
ELCD_DATA(4)
GPIO_A4
ELCD_DATA(5) A12
GPIO_A5
C11
ELCD_DATA(6)
GPIO_A6
A11
ELCD_DATA(7)
GPIO_A7
D10
ELCD_DATA(8)
GPIO_A8
G4
ELCD_DATA(9)
GPIO_A9
ELCD_DATA(10) H4
GPIO_A10
A10
ELCD_DATA(11)
GPIO_A11
VRIO ELCD_DATA(12) H3
GPIO_A12
F3
ELCD_DATA(13)
GPIO_A13
B10
ELCD_DATA(14)
GPIO_A14
D6
ELCD_DATA(15)
R514 GPIO_A15
R515 47K D9
GPIO_A16
47K
R516 47K D8
GPIO_A17
C8
MM_INT GPIO_A18
B9
ELCD_ADS GPIO_A19
A9
LCD_CS GPIO_A20
F4
ELCD_WR GPIO_A21
A8
ELCD_RD
GPIO_A22
L=MAIN, H=SUB D7
MAIN_SUB_SEL GPIO_A23
R518 47K B7
GPIO_A24
R519 47K G3
GPIO_A25
BOOT MODE A7
MBOOT[0] GPIO_A26
BOOT MODE E4
MBOOT[1] GPIO_A27
A14
GATED_IOEN GATED_IOEN
H for LCD , L for active MM B13
BPEN BPEN
BOOT MODE A13
BMSEL BMSEL
BOOT MODE = EHI x86 16bit
E3
GPIO_B0
For External Card A4
SD_INSERT GPIO_B1
D2
USB 2.0 for Ccomliance Test GPIO_B2
A3
GPIO_B3
A2
TP500 GPIO_B4
UART for TCC debug C1
TP501 GPIO_B5
B3
GPIO_B6
R523 47K
C3
Leakage current from LCD GPIO_B7
BOOT MODE D3
Effects to T Flash error
MLCD_VSYNC GPIO_B8
R528 47K
Cause to MM_2V8(0.7V) B2
GPIO_B9
--> Use discharge LDO BOOT MODE D1
GPIO_B10
E1
USB_DETECT GPIO_B11
N7
TF_DAT0 GPIO_C0
L7
TF_DAT1 GPIO_C1
N6
TF_DAT2 GPIO_C2
M7
TF_DAT3 GPIO_C3
R808 30 M5
Series R for some card
TF_CLK GPIO_C4
N8
TF_CMD GPIO_C5
L1
MM_USB_EN GPIO_C6
N4
CAM_RECORD_SEL GPIO_C7
P1
CAM_2V8_EN GPIO_C16
P2
GPIO_C17
P3
GPIO_C18
P4
GPIO_C19
P5
GPIO_C20
N3
GPIO_C21
N2
GPIO_C22
N9
GPIO_C23
MM_3V3
Consider patterns
J1
MM_USB_DP USB_DP
K1
MM_USB_DM USB_DM
R534 2.7K K3
R536 USB_REXT
1%
12MHz
3.9K X500
M2
UTM_X1
2 1 M10
UTM_X0
3 4
R537 10K
DSX321G(12MHz,8PF) N10
SDR_CKE
C524 C525
22p 22p
Pull-up for USB 2.0 wakeup after suspand mode
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
VRIO VREXTH MM_2V8 MM_3V3
C501 C502 C503 C504 C505 C506 C507 C508
1u 1u 1u 1u 1u 1u 1u 1u
VRIO VREXTH MM_2V8 MM_3V3
VBACKUP
C512
1u
Max 100mA
B1
GPIO_E0 CODEC_BCLK
A1 I2S CODEC
GPIO_E1 CODEC_LRC
G1
GPIO_E2 CODEC_MCLK
F1
CODEC_DIN
GPIO_E3
F2
GPIO_E4 CODEC_DOUT
H2
GPIO_E5
K11 I2C CODEC
GPIO_E6
H1
GPIO_E7
N5
GPIO_F0 CAM_D(0)
M8
GPIO_F1 CAM_D(1)
P8
GPIO_F2 CAM_D(2)
N11
GPIO_F3 CAM_D(3)
M6
GPIO_F4 CAM_D(4)
P6
CAM_D(5)
GPIO_F5
M11
GPIO_F6 CAM_D(6)
L6
GPIO_F7 CAM_D(7)
L9
GPIO_F8 CAM_MCLK
P9
GPIO_F9 CAM_PCLK
L12
GPIO_F10 CAM_VS
P7
GPIO_F11 CAM_HS
M14
GPIO_F12 CAM_PD
N14
GPIO_F13 CAM_RST
P10
GPIO_F14
M13
GPIO_F15
MLCD_DATA(15:0)
H11
GPIO_G0
G11
GPIO_G1
K13
GPIO_G2
J13
GPIO_G3
J14
GPIO_G4
H12
GPIO_G5
U506
G14
GPIO_G6
TCC7402
L14
GPIO_G7
G13
GPIO_G8
H14
GPIO_G9
F14
GPIO_G10
F13
GPIO_G11
F11
GPIO_G12
E14
GPIO_G13
E12
GPIO_G14
E13
GPIO_G15
J11
GPIO_G16
F12
GPIO_G17
C10
GPIO_G18
D14
GPIO_G19
E11
GPIO_G20 MLCD_RD
D13
GPIO_G21 MLCD_WR
B12
GPIO_G22 MLCD_RS
C13
GPIO_G23
E2 TP502
TDI
D4 TP503
TCK
A6 TP504
TMS TC Debug
A5
TP505
TDO
B4 TP506
RTCK
B5 R532 1K
NTRST
C5
NRESET
R533 47K
C6
TEST
K4 C521 1000p
XTIN CLK_32K
L3
XTOUT
C522 1800p
L5
FILTER0
C523 1800p
L10
FILTER1
DC/DC 1.5V for MPEG
VRIO DAC_2V8
R507 R508
47K 47K
MBOOT[0]
BMSEL TF_DAT0
MBOOT[1] TF_DAT1
GATED_IOEN TF_DAT2
BPEN TF_DAT3
TF_CLK
R510 R511 R512
TF_CMD
100K 100K 47K
TFLASH detect pin for external
DAT3 pulldown for internal
MM Always power on LDO 2.8V
VRIO VBAT
U502 BH28MA3WHFV
1 2
R517 VIN VOUT1
3
47K VOUT2
5 4
GND NOISE
VCAM_28 6 7
STBY PPAD
Discharge R
1u C515
C513 0.01u
R520 R521
4.7K 4.7K
CAM_I2C_SDA
CAM_I2C_SCL
MM USB Power
VBAT
DP_2V8
BH33MA3WHFV
1 2
VIN VOUT1
3
VOUT2
5 4
GND NOISE
6 Discharge R 7
MM_LDO_EN STBY PPAD
R531
R529
R530 U504
C516
100K 100K
100K 1u
MLCD_CS
SLCD_CS
MM_RESET
4.7K
R535
- 115 -
MM_1V5
1.2V for Others
SI1304DL-E3
D Q500
C510 L500 R506 C509
VBAT
4.7uH 100p G
10u 91K MM_1V2_EN
S
AAT1143IJS-0.6-T1 U500 R509
8 1
PGND3 EN MM_LDO_EN
200K
7 2
PGND2 OUT
6 3
PGND1 VIN
5 4
AGND LX
4.7u R513
C511
62K
LEVEL SHIFT
VRIO MM_2V8
U501 NLSV2T244MUTAG
1 8
VCCA VCCB
2 7
SD_INSERT_BB A1 B1 SD_INSERT
3 6
SLCD_RST A2 B2 SLCD_RESET
MM_2V8
4 5
_OE GND
VRIO MM_2V8
U503 NLSV2T244MUTAG
1 8
1u VCCA VCCB
C514
2 7
USB_DETECT_BB A1 B1 USB_DETECT
3 6
MLCD_RST A2 B2 MLCD_RESET
4 5
_OE GND
DP_2V8
MM_3V3
R524 R525 R526 R527
1.8K 1.8K 1.8K 1.8K
SENSOR_I2C_SDA
SENSOR_I2C_SCL
LED_I2C_SDA
C517 C518
0.01u 1u
A1 C1
LEDI2C_SCL A1 B1 LED_I2C_SCL
U505
A2 B4
LEDI2C_SDA A2 TXS0104EZXUR GND
A3 B3
TOUCH_I2C_SCL A3 OE
VRIO DP_2V8
TOUCH_I2C_SDA
C519 C520
1u 1u
LGE Internal Use Only