42PC5D-UL (CHASSIS:PA75C) - LG TV Service Manual (repair manual). Page 11

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BLOCK DIAGRAM
Block Diagram - Overview
Audio L/R
Flash
(16MB)
DDR(64MB)
DDR(64MB)
74LVC14APW 
TEA6420
(Audio
SW)
MC33078
(AMP)
CS5340
(A/D)
MTV416
(Micom
)
NTP3000
(Digital AMP)
X-tal(54M)
TMDS341A
(3x1,S/W)
74F08D
EEPROM
AT/NT
Tuner
64Bit I/F
Reset
CVBS
CVBS/Y/C
Y/
Cb
/Cr
R/G/B 
H/V Sync
RGB-PC
HDMI
0/1/2
COMP 1
COMP 2
AV 1
AV 2
RGB-PC
Audio L/R
I2S
MNT out
( L/R) 
SPDIF OUT
I2S
RS-232C
Dead IC when Standby
Option 
Alive IC when Standby
Video
Audio
Video
Front
End
Dual
HDMI
Rx
HD/SD
Video
Encoder
Audio
DSP
BCM3553
MCLK
MCLK
HDMI CEC
HDMI CEC 
(To Micom
)
To Micom
SDA
SCL
SIF
IF(AT)
Buffer 
Single LVDS
Connector
Digital out
(W)XGA
Local KEY
IR
Buffer
Buffer
24C16
AGC CTL (From BCM)
USB2.0
I2S Audio Input
VSB/QAM/NTSC/SIF
DDR(128MB)
DDR(128MB)
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