Circuit Descriptions, Abbreviation List, and IC Data Sheets
EN 89LC4.41E AA 9.
9. Circuit Descriptions, Abbreviation List, and IC Data Sheets
Index of this chapter:
9.1 Introduction
9.2 Block Diagram
9.3 Power Supply Unit
9.4 Abbreviation List
9.5 IC Data Sheets
9.1 Introduction
The LC4.41 chassis is a global chassis for the year 2006. It is
a successor of the LC4.3 chassis and covers a screen size of
42 inch (in 16:9 ratio). It has a new styling, called ME5FL. There
are two different picture qualities available, depending on the
model: Pixel Plus in the 42PF7321/10 and /12 models, and
Digital Crystal Clear in the 42PF5xx1/10 and /12 models. The
block diagram below (Figure “Block diagram”) shows the Pixel
Plus architecture; the architectures of the Digital Crystal Clear
models are shown in the block diagram in the Figure “Block
diagram of the internal building blocks“.
The architecture consists of a TV and Scaler panel, I/O panel,
Side I/O and Local Keyboard panel and Power Supply panel.
The functions for video/audio processing, microprocessor (P),
and CC/Teletext (TXT) decoder are all combined in one IC
(TDA150xx, item 7217), the so-called third generation Ultimate
One Chip (UOC-III) or “Hercules”. This chip has the following
features:
• Control, small signal, mono/stereo, and extensive Audio/
Video switching in one IC.
• Upgrade with digital sound & video processing.
• Alignment free IF, including SECAM-L/L1 and AM.
• FM sound 4.5/5.5/6.0/6.5, no traps/bandpass filters.
• Full multi-standard colour decoder.
• One Xtal reference for all functions (microprocessor, RCP,
TXT/CC, RDS, colour decoder, and stereo sound
processor).
9.2 Block Diagram
Figure 9-1 Block Diagram
The function is basically the same as in the LC4.3E AA, with the
following differences:
• the model range only contains models with Digital Crystal
Clear or Pixel Plus;
• Pixel Plus is performed by a new IC, called Pacific 3.
The Pacific 3 IC, which is present in Pixel Plus models,
provides additional sharpening, and contrast and colour
enhancements to the picture. For a general outline, see the
table and the block diagrams below, in which the architectures
of the two different models are given, together with their
electronic building blocks.
Table 9-1 Models and picture quality
Figure 9-2 Block diagram of the internal building blocks
For more information, please refer to manual LC4.3E AA,
12NC 3122 785 15270
TUNER
IF
CVBS
CVBS,U,V
A/D
AD9945
COLUM-
BUS
SCALER
LVDSRx
SDRAM
HDMI
NVM
FLASH
DDR
LCD
PA NE L
601 INTERF. 601 INTERF.
DVI TMDS
601 INTERFACE
Y
C
HERCULES
INTERNAL LIP SYNC CKT
SM5301
DVI-IHDMIDMMIHP
NVM
AUDIO
AMPLIFIER
ComPair
SCART/
CINCH
I/O
TO
AUDIO
AMP
PACIFIC 3
LVDSRx
G_16210_093.eps
200106
Model Picture quality
42PF3321/10 Digital Crystal Clear
42PF5321/10/12 Digital Crystal Clear
42PF5411/10 Digital Crystal Clear
42PF7321/10/12 Pixel Plus
HERCULESPIXEL PLUS
ADC
CVBS
Pb, Pr
COLUMBUS SCALER PACIFIC 3
LV DS
HERCULES
DIGITAL
CRYSTAL CLEAR
ADC
CVBS
Pb, Pr
COLUMBUS SCALER
LV DS
G_16210_094.eps
140206
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