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3. Technical Brief
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Figure 3-1-8. Schematic of Asta USB block
Figure 3-1-9. Schematic of USB Transceiver
ACC_GPIO_6
P3
ACC_GPIO_7
P4
R4
ACC_GPIO_8
ACC_GPIO_9
R3
P2
ACC_GPIO_2
ACC_GPIO_3
N9
M9
ACC_GPIO_4
ACC_GPIO_5
N4
J9
ACC_GPIO_0
ACC_GPIO_1
K9
R2
ACC_GP07_USB_DAT5
ACC_GP06_USB_DAT4
ACC_GP10_USB_DAT6
ACC_GP11_USB_DAT7
ACC_GP00_USB_STP
ACC_GP01_USB_DIR
ACC_GP02_UART0_RX
ACC_GP03_UART0_TX
ACC_GP04_USB_CLK
ACC_GP05_USB_NXT
10V
1%
R438
12K
C429
0.1u
R435
51K
C433
2.2u
R436
1K
0.1u
C431
4.7u
R437
0
4.7u
C424
C432
VBUS
VCC
F3
B5
VCC_IO1
VCC_IO2
B2
F5
XTAL1
XTAL2
F6
VDDE_1V8
C430
0.1u
C1
D1
DP
FAULT
E2
GND1
C5
D2
GND2
GND3
E4
D3
ID
NC1
F1
F2
NC2
D5
NXT
PSW_N
D4
E6
REF1V8
REG3V3
E3
C2
RREF
STP
D6
TEST
C4
F4
CFG0
E1
B4
CFG1
CFG2
B3
CHIP_SEL
C3
A4
CLOCK
DATA0
B1
A1
DATA1
DATA2
A2
A3
DATA3
DATA4
A5
A6
DATA5
DATA6
B6
DATA7
C6
E5
DIR
DM
U402
ISP1508AET
0.1u
C423
VBAT
C428
4.7u
0
R430
ACC_GP20_USB_CS_PD
ACC_GP04_USB_CLK
USB_DAT0
USB_DAT1
USB_DAT2
ACC_GP22_USB_DAT3
ACC_GP06_USB_DAT4
ACC_GP07_USB_DAT5
ACC_GP10_USB_DAT6
ACC_GP11_USB_DAT7
ACC_GP01_USB_DIR
ACC_GP05_USB_NXT
ACC_GP00_USB_STP
USB_XTAL1
USB_DM
VBUS_USB_TRX
USB_DP
USB_DAT_VP
L4
USB_OE
M4
L3
USB_SE0_VM
USB_DAT1
USB_DAT2
USB_DAT0