Circuit Descriptions, Abbreviation List, and IC Data Sheets
EN 58 LC8.1E LB9.
9. Circuit Descriptions, Abbreviation List, and IC Data Sheets
Index of this chapter:
9.1 Introduction
9.2 LCD Power Supply
9.3 DC/DC converters
9.4 Front-End
9.5 Video/Audio Processing
9.6 HDMI
9.7 Abbreviation List
9.8 IC Data Sheets
Notes:
•Only new circuits (circuits that are not published recently)
are described.
• Figures can deviate slightly from the actual situation, due
to different set executions.
• For a good understanding of the following circuit
descriptions, please use the Wiring, Block (chapter 6) and
Circuit Diagrams (chapter 7). Where necessary, you will
find a separate drawing for clarification.
9.1 Introduction
The LC8.1E LB chassis (development name “LC08EE”) is a
new chassis using an NXP “LOC-TOP” chipset. It covers
screen sizes of 32" and 42" with the “MG8” styling.
Main key components are:
• NXP TDA1547 “LOC-TOP” LCD TV controller
• NXP TDA8890 “LOC-TOP” Versatile Video processor
• Weltrend WT61P8S microprocessor
• NXP TDA8932 Class-D Audio processor
• UV1316E tuner.
Refer to figure “LC08EE Architecture” for details.
Figure 9-1 LC08EE Architecture
L
R
Y
Pb
Pr
VGA
HDMI 1
HDMI 2
SPDIF
L
/
R
Ext 1 - Scart 1
SMIC
TDA8890
LOC TOP
TDA15471/15421
Tuner
CVBS
L
R
SAW
SAW
5V
HDMI
MUX
HP
DC-DC
1x NCP5422
4xLD1117
Standby uP
WT61P7/8
CEC
I2C
LVDS
DDR1
250MHz
16MB
3V3
2V5
1V8
12V
+/-12V
3V3 stby
IR, LED, LC
SPI
Flash
1MB
CLASS D
TDA8933BT
I_18170_038.eps
310708
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