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 TV 19MF338B & 19PFL3403D &19MD358B use
1440x900 WXGA panel.Support PC analog and DVI(HDMI
port) digital input up to 1440x900 60Hz model,and support Y/
C,CVBS.Also for Y pb signal input from SDTV to
HDTV(480i,480p,720p60Hz,1080i 60Hz) digital port for
HDMI(480i, 480p,720p60Hz,1080i60Hz).
This LCD-Monitor use MediaTek MT5380ACU scalar IC,which
has embedded ADC for HDTV/Analog D-sub input up to
54MHz/10bit,digital port for CVBS and Y/C input,TXT decoder
and built-in dual 6/8/10-bit LVDS transmitter scaler.
There are video processing and some audio function in scaler
board.The 19MF338B & 19PFL3403D &19MD358B uses
MediaTek MT5380ACU as scaler engine,which has embedded
Analog D-SUB,digital HDMI receiver,scaling input signal to
panel OSD mapping and simple 3D de-interlacer.The extra
DDR is to accomplish video frame rate conversion and to
provide OSD and de-interlacer with enough memory.
The video processing and some audio functions is done on the
Scaler board.
The MediaTek MT5380ACU consists of a DTV frontend
demodulator, a backend decoder and a TV controller and offers
high integration for advanced applications. It combines a
transport demultiplexer, a high definition MPEG
2 video
decoder, an AC3 audio decoder, an LVDS transmitter, and an
NTSC/PAL/SECAM TV decoder with a 3D comb filter.
The MT5380C enables consumer electronics manufactures to
build high quality, low cost and feature rich iDTVs. World
Leading Audio/Video Technology: The MT5380ACU has built
in high resolution and high quality audio codec. It includes
MediaTek MDDiTM deinterlace solution to generate very
smooth picture quality for motions. A 3D comb filter added to
the TV decoder recovers great detail for still pictures. The
special color processing technology provides natural, deep
colors and true studio quality graphics. Rich Features for High
Value Products: The MT5380ACU enables a true single chip
experience. It integrates high quality HDMI1.3, high speed
VGA ADC, dual channel LVDS, USB2.0 receiver and
multimedia decoder. Reliable Frontend Receiving Capability:
Excellent adjacent and cochannel rejection capability grants
customers never miss any wonderful stream. Professional
error concealment provides stable, smooth and mosaic free
video quality.
9.2
Block Diagram
19MF338B & 19MD358B
Figure 9-1 Scaler board
block diagram
DDR1 256Mbit x1
Combo
Tuner
TDQU4-507A
Audio R/L of CVB
S
IFAT +/-
Audio R/L of YPbPr
D
S
D
S
( Ma
g
navox )
( Ma
g
navox )
Function block of main Board w/ MT5380
Function block of main Board w/ MT5380
A
A
C
C
U
U
s
peaker
s
LVD
S
to panel
UART for I
S
P & Comair & iTV level 1
RC
I2C
Audio R/L of DVD YPbPr
PC D-
S
UB
UXGA 162MHz
DDC 24C02
Headphone
I2C
Key
s
HD YPbPr
CVB
S
CVB
S
+ 2nd IF
HDMI-1
DVD YPbPr
Audio R/L of PC
TDA
8
9
33
BTW
DDC 24C02
M24C16-MN6T
S
erial Fla
s
h 4MByte
S
B-0
3
S
B-05
S
B-11
S
B-07
S
B-0
8
HP OP AMP
LM4
8
09MA
S
B-12
S
B-04
S
B-06
S
B-05
MT5
38
0ACU
.MCU
.DTV receiver
.ATV demod
u
l
a
tion
.MPEG/video/
au
dio
decoder
.
S
c
a
ling
.Video enh
a
ncement
.
3
D com
b
.LVD
S
Tr
a
n
s
mitter
.HDMI 1.
3a
Receiver
.ADC
I_17550_0
8
7.ep
s
100
3
0
8
