Circuit Descriptions
7.
7.
Circuit Descriptions
Index of this chapter:
7.1 Introduction
7.2 Power Architecture
7.3 Front-End
7.4 HDMI
7.5 Video and Audio Processing - PNX8543
7.6 Common Interface CI+
7.7 Net TV
7.8 Ambi Light
7.9 “White LED” Backlight
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 (see chapter
) and circuit diagrams (see chapter
10. Circuit Diagrams and PWB Layouts
you will find a separate drawing for clarification.
7.1
Introduction
The Q549.3E LA chassis (platform TV543/92 Elite Premium) is
a derivative from the Q549.2E LA chassis (platform TV543/92
Elite Core).
Main delta’s with the previous chassis are the introduction of
“White LED backlight” and the implementation of the LAN9420
ethernet controller (item no.7N04, diagram B07G).
7.1.1
Implementation
Key components of this chassis are:
•
PNX8543 Digital Colour Decoder
•
EP3C25F324C7N FPGA (“Local Contrast”)
•
HD1816AF Hybrid Tuner
•
DRX3926K Demodulator
•
TDA9996 HDMI Switch
•
TPA3123D2PWP Class D Power Amplifier
•
LAN9420 ethernet controller.
7.1.2
TV543 Architecture Overview
•
For details about the chassis block diagrams refer to
chapter
. An overview of the TV543
architecture can be found in
Figure 7-1 Architecture of TV543/92 Elite Premium platform
1
83
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Matrix
FHD@120p
FHD@100p
Matrix
FHD@120p
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PNX5120
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Ambient Li
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3
2
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8
54
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H264
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Contra
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16
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MICRONA
S
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S
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a
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250E
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FLA
S
H
8
Ambient Li
g
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Led Dimmin
g
PCI
2 channel
Audio Amp.
Ethernet
U
S
B 2.0
hdmi
hdmi
hdmi
CA
TDA9996
MUX
hdm
i
Mini
PCI (Wifi)
hdmi
S
PI
LVD
S
Pixel
a
ted Am
b
i
