Circuit Descriptions, Abbreviation List, and IC Data Sheets
9.
9.
Circuit Descriptions, Abbreviation List, and IC Data Sheets
Index of this chapter:
9.1 Introduction
9.2 Block Diagram
9.3 Abbreviation List
9.4 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
•
This chassis uses a 1440x900 WXGA+ LCD panel for the
19” model and a 1680x1050 WSXGA+ LCD panel for the
22” model. It supports PC modes via the VGA D-sub and
HDMI inputs, and supports component video, composite
video and audio input, full SCART input, HDMI with HDCP.
YPbPr can support up to 1080i and HDMI can support up
to 1080p (both should also support down to and including
480i).
•
This chassis uses the MediaTek MT5335PGU scaler IC.
This IC combines a transport de-multiplexer, a high
definition MPEG-2 video decoder, an MPEG2 audio
decoder, an LVDS transmitter, and a NTSC/PAL/SECAM
TV decoder with a 3D comb filter. It also has a built-in high
resolution and high-quality audio codec. It includes the
MediaTek 2D MDDi de-interlace solution to generate
smooth motion pictures. A 3D comb filter added to the TV
decoder recovers great detail for still pictures. The special
colour processing technology provides natural, deep
colours and true studio quality graphics.
•
It integrates HDMI1.3, high speed VGA ADC, dual-channel
LVDS, and USB2.0 receiver.
9.2
Block Diagram
Figure 9-1 Scaler board block diagram 19" & 22"
5V
Power
3
.
3
V,2.5V,1.
8
V,1.2V,1.1V
IR
Headphone
Audio AMP
TDA
8
9
3
2BTW
12V
S
B-01
MT5335PGU
MPEG-1 l
a
yer I/II decoding
A
u
dio ADC
A
u
dio DAC
3
D
su
rro
u
nd proce
ss
ing with
Virt
ua
l
su
rro
u
nd
A
u
tom
a
tic vol
u
me control
A
u
dio I/F
2-D Gr
a
phic
De-interl
a
ce
VADCx4
HDMI In I/F
Digit
a
l TV Demod
u
l
a
tor
An
a
log TV IF Demod
u
l
a
tor
TV
au
dio demod
u
l
a
tor
U
S
B2.0
3
.
3
V,2.5V,1.2V,1.1V
Power
Board
16V
Common Interface Controller
MT
8
295
3
.
3
V,1.
8
V
PCMCIA
5V,
3
.
3
V
D-
S
UB/PC-VGA
S
CART
HDMI 1
HDMI 2
HDMI MUX
TMD
S
251PAGR
5V,
3
.
3
V
Audio R/L of CVB
S
Audio R/L of PC
YPbPr/L/R
Keypad
Channel demodulator
MT51
33
3
.
3
V
TUNER
ENG
3
7E14KF
5V
S
B-04
S
B-1
3
S
B-1
3
S
ub MCU
WT6702F_OG200WT
3
.
3
V
S
B-11
S
B-10
Fla
s
h MX25L
3
205DMI-12G
DDR
S
DRAM
HY5DU121622DTP-D4
3
2.5V
S
B-19
S
B-1
8
S
B-17
S
B-1
3
S
B-0
3
S
B-01
S
B-02
S
B-09
S
B-15
S
B-1
8
S
PIDF OUT
2.5V
S
B-1
8
S
B-14
EARPHONE AMP
S
B-17
U
S
B Port
S
B-10
I_1
8
120_020.ep
s
26060
8
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Страница 58: ...58 TPM1 3HE LA 7 Circuit Diagrams and PWB Layouts 3340D 10 Layout Scaler Board Top Side I_18121_020 eps 051108 ...
Страница 78: ...Revision List EN 78 TPM1 3HE LA 11 ...