Block Diagram - LG SJ2 Service Manual

BLOCK DIAGRAM

BT Internal Antenna
UART(Single) control
I2C
BT Module
CRYSTAL
24.576 MHz
SPDIF_RX
BK3V3
SPIDF-IN
BK5 V
LDO
OPTICAL
L/R
MP3-IN
MP3_IN_DETECT
USB
playback
IR
Sensor
power on/off key IO
Switch key
Dot LED Display
Standby Audio IN
USB OPTICAL
Red LED white LED white LED white LED
DATA
BCK
LRCK
IC300
MCLK
ADC
IC301
OPT_Det
Audio DSP
Protect IC 5V-In
IC302
IC305
ESD Protect
1 pcs
IR
USB Overcurrent DET
vol+
VOL+/- source vol-
Switch key
source
8307 Debug
GND
MTK I/O PIN control
BT
white LED
I2C / RST / PWDN
DATA0(P124) MCLK
LRCK
BCK
DATA2(P120)
W_SDA
W_SCL
W_INT
W_RST(no use)
CRYSTAL
24 MHz
SDRAM 64 MHz
Series Flash
32 M bit
for EQ and SW
Reset IC
3-19 3-20
L
PWR AMP
IC500
R
Wireless
Internal Antenna
To Amp +22 V MOSFET SW
DMP4639
DC to DC
W3.3 V
W3.3 V
+5 V MOSFET
AO3403
LDO 6332
3.3 V
3.3 V
BK1.23 V
DC to DC
1.23 V
DC to DC
DC to DC
BK3V3
IC100
IC101
BK5V
8 Ω 30 W
THD 10 %
8 Ω 30 W
THD 10 %