LG KT520 Service Manual page 33

3. TECHNICAL BRIEF
ACC_GP00_USB_STP
ACC_GP01_USB_DIR
ACC_GP02_UART0_RX
ACC_GP03_UART0_TX
ACC_GP04_USB_CLK
ACC_GP05_USB_NXT
ACC_GP06_USB_DAT4
ACC_GP07_USB_DAT5
ACC_GP10_USB_DAT6
ACC_GP11_USB_DAT7
ACC_GP20_USB_CS_PD
ACC_GP22_USB_DAT3
ACC_GP06_USB_DAT4
ACC_GP07_USB_DAT5
ACC_GP10_USB_DAT6
ACC_GP11_USB_DAT7
LGE Internal Use Only
USB_DAT1
USB_DAT0
USB_DAT2
Figure 3-1-8. Schematic of DB3150 USB block
C3
A4
ACC_GP04_USB_CLK
B1
USB_DAT0
A1
USB_DAT1
A2
USB_DAT2
A3
A5
A6
B6
C6
D5
ACC_GP05_USB_NXT
D6
ACC_GP00_USB_STP
E5
ACC_GP01_USB_DIR
E1
E6
Figure 3-1-9. Schematic of USB Transceiver
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J9
ACC_GPIO_0
K9
ACC_GPIO_1
P2
ACC_GPIO_2
N9
ACC_GPIO_3
M9
ACC_GPIO_4
N4
ACC_GPIO_5
P3
ACC_GPIO_6
P4
ACC_GPIO_7
R4
ACC_GPIO_8
R3
ACC_GPIO_9
R2
L4
USB_DAT_VP
L3
USB_SE0_VM
M4
USB_OE
VBAT VDDE_1V8
C408 C409
0.1u 4.7u
10V
C4
CHIP_SEL TEST
B5
CLOCK VCC_IO1
B2
DATA0 VCC_IO2
C2
DATA1 RREF
C1
DATA2 DM
D1
U402
DATA3 DP
E2
ISP1508AET
DATA4 FAULT
D3
DATA5 ID
B3
DATA6 CFG2
B4
DATA7 CFG1
D4
NXT PSW_N
F4
STP VBUS
E3
DIR REG3V3
F5
CFG0 XTAL1
F6
REF1V8 XTAL2
Copyright © 2008 LG Electronics. Inc. All right reserved.
USB_DM
USB_DP
R417 1K
VBUS_USB_TRX
USB_XTAL1
Only for training and service purposes