Toshiba 20VL44G User manual

TOSHIBA LC CHASSIS
20VL44G 20VL55 20VL63
TFT- LCD TV SERVICE MANUAL

CONTENTS PAGES
Safety instructions 1
Technical specifications 2
Power rating and Panel Specifications 3
Remote control explanations 4
Service Menu of the TV 5
Set appearrances 9
Block diagram of the VCTI 10
Block diagram of Microcontroller (Genesis) 11
Block diagram of power supply 12
Data sheet of important IC’s 14
Service mode items and explanations 12
Replacement part List 23
Frequency list of channels
28

SAFETY PRECAUTIONS
GENERAL GUIDELINES
1. Always use the manufacturer’s replacement safety
components. The critical safety components marked
with on the schematics diagrams should not be
by other substitutes. Other substitute may create the
electrical shock , fire or other hazards. Take
attention to replace the spacers with the originals.
Furthermore where a short circuit has occurred ,
replace those components that indicate evidence of
overheating.
2. After servicing , see that all the protective devices
such as insulation barriers, insulation papers, shields
and isolation R-C combinations are correctly
installed.
3. When the receiver is not being used for a long time
of period of time , unplug the power cord of the
Adaptor from the AC outlet.
Color TFT LCD Module is very sensitive
both electrically and physically.Users,
therefore, are requested to follow the
“Guidance of handling color TFT LCD
Module”on the followings.
1-Be careful not to make scratch on the
polarizer.
Surface of polarizer is soft and can be physically
damaged easily.
Please do not touch, push or rub polarizer surface
with materials over HB hardness.
2 -Keep clean the surface.
Please wear rubber glove when touch the surface of
LCD screen. Please use soft and anti-static material
as cleaner.
3 -Keep out of water.
Water on/in the LCD may cause electrical short or
corrosion. Please wipe out dry or water carefully.
4 -Prevent swift Temperature &
Humidity change.
Instantaneous temperature and/or humiditychange
can make dew or ice which cause nonconformance
such as malfunction.
5 High temperature & high humidity
reduce the life-time.
LCD is not proper to be used at high temperature
and high humidity. Please keep specified
temperature and humidity condition.
6 -Keep out of Corrosive Gas.
Corrosive gas effect the polarizer and the circuit
chemically and cause defects accordingly.
7 -Electrostatic discharge can make
Damage
There are electro-static sensitive components such
as CMOS in LCD Module. Please earth human
body when handle the LCD.In addition, please do
not touch the interface connector pin with bare.
8 -Do not operate for a long time under
the same pattern
Operating LCD for a long time under the same
pattern can cause image persistence and can
damage it. Please follow following guidance.
1. Turn the power off when do not use.
2. Change the pattern periodically.

Receiving System PAL B/G+I+D/K SECAM L/L'
Tuning System PLL FST
Comb Filter Adaptive 4H\2H
LTI, CTI Filters Optional
Sync On Green (SOG) support on graphics YES
Scaling Upto SXGA at 75Hz
Stereo Decoding (German A2, Nicam, BTSC) German A2, Nicam
Virtual Dolby Optional
Subwoofer Optional
YPbPr In (Progressive) Through D-sub 15 conn. Optional
Number of speakers 2 (L+R)
Level (1.5, 2.5, Teleweb) Teletext 1.5
Type
No Text- Optional
Fast Text -Optional
Top Text&Fast-Default
List Mode Optional
Page Memory 10p
Supported Menu Languages
ENGLISH, DEUTSCH, DUTCH, FRANCAIS,
ESPAÑOL, ITALIANO, PORTUGUESA,
EHΛΛNIKA, SVENSKA, NORSK, SUOMI,
TÜRKÇE, POLSKI, MAGYAR, ČEŠTINA,
ROMANESTE, SLOVENČINA, DANSK,
SERBIAN, PЧCCKИЙ, Bulgarian, Crotian
>> 22 Languages
4:3 YES
16:9 4:3 Panels: Depends on LCD
16:9 Panels: YES
14:9 4:3 Panels: NO
16: 9 Panels: Depends on LCD
Panorama NO
Letterbox 4:3 Panels: NO
16: 9 Panels: Depends on LCD
Subtitle 4:3 Panels: NO
16: 9 Panels: Depends on LCD
Zoom NO
WSS (Wide Screen Signalling) Optional
ATS (Automatic Tuning System) Frequency Search
Manual Search Frequency Search
AFT (Auto Fine Tuning) YES
Number of Program Storage 100
No Ident Timer YES
Equalizer YES
AVL (Automatic Volume Level) YES
Sound Status Memory YES
Picture Status Memory YES
Zapping\Swap Optional
Panel Lock YES
Picture Format Switching Through Scart (Pin 8) YES
Auto RGB Detect Through Scart (Pin 16) YES
Timer On\Off or Sleep Optional
Picture Smart Modes YES
Sound Smart Modes YES
Simple Hotel Mode Optional
Stby to On in PC mode
when last watched is PC Optional
Stby to On automatically
when PC signal is available Optional
Memory Card Reader Optional
Teletext
Picture Formats
(4:3, 16:9, 14:9, Panorama, LetterBox, Subtitle)
Wake Up in PC
SPECIFICATIONS

15" 17" 20" 22W" 26" 27" 32"
Adaptor Input 12V 12V 15V 24V Built-in Power Built-in Power Built-in Power
Current rating 3A 4A 4A 3A
Power consumptions 48W 60W 75W 100W 130W 130W 130W
St-By Power
Consum
p
tion <3W <3W <3W <3W <3W <3W <3W
Input Range 100-240V/50, 60Hz 100-240V/50, 60Hz 100-240V/50, 60Hz 100-240V/50, 60H
z
100-240V/50, 60Hz 100-240V/50, 60
H
100-240V/50, 60Hz
Audio Output Power
(
%10
)
THD 2X2W 2X3W 2X3W 2X7W 2X7W 2X7W
Manufacturer
Samsung
CMO
AUO
Samsung CMO AUO Samsung
Samsung
LG-Philips
AUO
Chimei Chimei
Interface Double TTL\Single
LVDS Dual LVDS Single TTL\Single LVDS Single LVDS Singlel LVDS Singel LVDS Singel LVDS
Resolution XGA (1024x768) SXGA
(1280x1024)
SVGA (800x600)
VGA (640x480)
WXGA
(1280x720) WXGA (1280x768) WXGA (1280x720) WXGA (1280x720)
Brightness (cd/m2)> 250 300 500 450 450 550 550
Contrast> 300 400 500 500 400 600 600
POWER RATING AND PANEL SPECIFICATION

1.Picture Format ( )
2. Temporary mute of volume (MUTE) ( )
3.Numeric buttons
4. Audio/Video (AV) ( )
5.PC mode transition ( )
6. Teletext / MIX / TV choice buttons ( )
7. Up (Menu -Teletext) ( )
8. Left (Menu) ( )
9. Volume UP ( )
10. Volume DOWN ( )
11. Red Fastext Button
12. Green Fastext Button
13. Index Button (P100) ( )
14. Question/Answer button (REVEAL) ( )
15. UPDATE Button ( )
16. SUB PAGE Button ( )
17. STAND-BY Button ( )
18. Return to Selected Program Button (SWAP) ( )
19. TV mode transition button ( )
20. Menu Button ( )
21. OK Button ( )
22. Right (Menu) ( )
23. Down (Menu/Teletext) ( )
24. Program up button (P+) ( )
25. Program down button (P-) ( )
26. Blue Fastext Button
27. Yellow Fastext Button
28. STOP Button ( )
29. Teletext enlarge button (DOUBLE) ( )
30. Equalizer selection button ( )
31. Picture control button ( )
REMOTE CONTROL
OK
123
456
789
0
AV SWAP
PC TV
TXT/MIX MENU
VOL+
X
172
1
3
4
20
519
6
7
8
9
22
21
10
24
23
25
11
12 27
26
13 28
14 29
15 30
31
16
18
VOL-
‹?
PR+
PR-

SERVICE MENU OF THE TV
ITEM NAME OPTIONS/ VALUES
DEFAULT VALUES OR
SETUP
OPTIONS
SCART 2 ON/OFF OFF
FAV ON/OFF ON
SVHS ON/OFF ON
HOTEL MODE ON/OFF OFF
STBY RECALL ON/OFF OFF
RECALL LAST AV ON/OFF OFF
MSP CARRIER MUTE ON/OFF OFF
WSS RF ON/OFF ON
AUTO AV 16:9 ON/OFF ON
FIRST ATS ON/OFF OFF
BACKLIGHT POL ON/OFF OFF
FACTORY MODE ON/OFF OFF
ADJUSTMENTS
WHITE R 0-255 128
WHITE G 0-255 128
WHITE B 0-255 128
BRIGHTNESS 0-255 130
CONTRAST 0-257 158
COLOR 0-255 128
PRESCALE FM 0-127 37
PRESCALE NICAM 0-127 63
PRESCALE SCART 0-127 27
HOTEL VOLUME 0-63 16
AGC 0-31 23
FACTORY RESET
SW DOWNLOAD
SELECTIONS
TUNER TYPE PHILIPS , SAMSUNG PHILIPS
TELETEXT FAST&TOP , NO TEXT ,FAST FAST&TOP
TIMER MODE SLEEP TIMER OFF TIMER SLEEP TIMER
MSP CLIP REDUCE VOL REDUCE
VOLUME REDUCE VOL
SWAP/ZAPP ZAPP
DOLBY VIRTUEL ON/OFF OFF

LC (L5C) SERVICE MENU
Service Menu is entered by pressing 9, 3, 0, 1 keys on the remote controller when the Picture icon is
highlighted in the Main Menu.
Service Menu has 3 sub-menus. These are:
•Options
•Adjustments
•Selections.
Navigation through these menus can be done by pressing OK button. Every adjustment made in this
menu is saved automatically.
OPTIONS
Options are adjustments that the user can select On or Off.
•SCART 2
•FAV
•SVHS
•HOTEL MODE
•STAND BY
•MSP CARRIER MUTE
•WSS SCART
•FIRST ATS
SCART 2 / FAV / SVHS
If a source is disabled in the Service Menu, it will be skipped during source switches. If SCART2 is
enabled, SW assumes that the FAV source share the same path as the SVHS source on the HW. If it is
disabled, it is assumed that FAV and SVHS share separate paths. TUNER and SCART1 are enabled by
default.
HOTEL MODE
Enabling Hotel Mode has two effects. First, SETUP menu is no longer accessible by the user. Second,
maximum adjustable volume value is limited to HOTEL VOLUME value. This value can be adjusted in the
ADJUSTMENTS sub-menu of the Service Menu.
STAND BY
If this Option is OFF, the TV will stay in Stand By mode after a Power On. If this Option is ON, the TV will
recall its last stand by status before the Power Off, and switch on from Stand By automatically, if the last
state was ‘Stand by On’.
MSP CARRIER MUTE
If this option is ON, sound processor’s carrier mute functionality will be enabled. The MSP will mute the
sound automatically if the signal quality is bad. Setting this option Off will disable this functionality.
ATS
If this option is set to ON, TV will display Country Selection menu in the next start. After some country is
selected, the user will be prompted for the start of AutoProgramming process.

ADJUSTMENTS
This sub-menu contains numeric adjustments. These items are:
•WHITE R
•WHITE G
•WHITE B
•BRIGHTNESS
•CONTRAST
•COLOR
•PRESCALE FM
•PRESCALE NICAM
•PRESCALE SCART
•HOTEL VOLUME
WHITE R / WHITE G / WHITE B
These are used for color bias adjustment. Unlike other items in the service menu, changes will take effect
immediately.
PRESCALE FM / PRESCALE NICAM / PRESCALE SCART
These are prescale values that will be used for the initialization of the sound processor (MSP), at the next
switch on.
HOTEL VOLUME
This value is used as the volume limit, when the Hotel Mode is on.
SELECTIONS
This sub-menu contains selections.
•TUNER TYPE SAMSUNG / PHILIPS
•TELETEXT NO TEXT / FAST / FAST&TOP
•MSP CLIP REDUCE VOL / REDUCE TONE
TUNER TYPE
One of two supported tuner can be selected from this item. System must be restarted for this change to
take effect.
TELETEXT
NO TEXT: Teletext is totally disabled. TXT/MIX button will not be functional. AUTO picture format mode
will be disabled in RF, F-AV and SHVS modes. Naming and sorting functionality during Autoprogramming
will be disabled.
FAST: TOPtext functionality will be disabled.
FAST&TOP: TOPtext functionality is enabled.
TIMER MODE
If OFF TIMER is selected, the user will be able to enter time of the day info for the TV to switch off. If
SLEEP TIMER is selected, the user can specify some time period, after which the TV will go to stand by
automatically.

MSP CLIP
This selection identifies which method will be used by the sound processor to prevent clipping effects on
volume.
AUTOPROGRAMMING
When the user selects the Autoprogram item in Setup menu, Country Selection menu is opened. The user
must select a country before the Autoprogramming starts. Broadcast system will be selected according to
the country selected.
Broadcast systems according to countries:
BELGIUM BG + L
CROATIA BG
CZECH REP. DK
DENMARK BG
FINLAND BG
FRANCE L + BG
GERMANY BG
GREECE BG
HUNGARY DK
IRELAND I
ITALY BG
NETHERLANDS BG
NORWAY BG
POLAND DK
PORTUGAL BG
SPAIN BG
SWEDEN BG
SWITZERLAND BG + L
TURKEY BG
UNITED KINGDOM I
For countries France, Belgium and Switzerland, autoprogramming is done twice. For Belgium and
Switzerland, first BG channels will be searched, after the search in BG is done, searching will restart for L
standard. If the selected country is France, the sequence of standards is reversed, thus, first L then BG.
TELETEXT LANGUAGES
L5C SW decides which teletext language group will be used for teletext decoding, according to the
country selected for autoprogramming.Teletext languages according to countries:
EAST EUROPE:CROATIA ,CZECH_REP, POLAND
WEST EUROPE: BELGIUM ,DENMARK, FINLAND, UK, FRANCE, GERMANY,
IRELAND ,ITALY ,NETHERLANDS, NORWAY, PORTUGAL,SPAIN, SWEDEN, SWITZERLAND,
HUNGARY
TURKISH-GREEK:GREECE TURKEY
PC MODE
PC mode can be entered by pressing PC button on the remote controller. User can return back to TV
mode by pressing the PC or TV buttons.
After the switching to PC mode, VGA input will be displayed on screen, as soon as the mode (input
resolution and frequency) is determined.
If there is no input from the VGA input, NO SIGNAL dialog will be displayed for 15 seconds. At the end of
this period if there is no signal from VGA input, the TV will go to Sleep State. While in the sleep state, the
TV will keep monitoring the VGA input. If VGA signal is detected, the TV will wake from Sleep State, to PC
mode. Alternatively, the user may select to switch the TV on from Sleep State, just like switching on from
Stand-by. In this case, the set will switch on from TV mode.

SET APPEARANCE OF 26-32 INCH
Back light module
(Built-in Panel)
Main
Chassis
Audio Amplifier Power Supply board
SET APPEARANCE OF 15-23 INCH
Main
Chassis
Back light module

HEADPHONE
AMPL.TDA1308
AUDIO AMPL.
MAX9704
MULTISYSTEM
TUNER
SAW
FILTER IF INPUT
SC1-AUDIO-OUT
SC2-AUDIO-OUT
SC1 AUDIO-IN
RGB-IN
SC1-CVBS-IN
SC2-CVBS-IN
SVHS-C/Y IN
RCA-CVBS-IN
SC1-CVBS-OUT
SC2-CVBS-OUT
VCTI IC
PSS DIP88
U303
Aout1 R/L
Aout2 R/L
Ain2 L/R
Ain1 L/R
VCT-RGB-OUT
VS-VCT
HS-VCT
SUBWOOF. SUBWOOFER AMP.
MP7731
SUBWOOFER
SPEAKER
RESET Q
L/R OUT
MUTE
HEADPHONE
JACK
SPEAKERS
SCART 1
SCART 2
CVBS
RCA-IN
SVHS IN
EEPROM
24LC02
VGA
SOCKET
MEMORY
CARD
RGB-DSUB
HS/VS-DSUB
RGB-SD
HS/VS-SD
RGB
SWITCH
PI3V512
PC-SD-SW
RGB-SW
HS/VS-SW
2nd RGB
SWITCH
PI3V512
S1-MAIN-SW
RGB-G
HS/VS-G
AUDIO-R/L
MEMORY CARD
AUDIO-R/L-RCA
CD4053
AUDIO
SWITCH
MEMORY CARD
RCA SWITCH
CD4053
AUDIO
SWITCH
AUDIO-R/L-SC2
MR-R/L
RCA-S2-
SWITCH
Ain1R
Ain1L
OPTIONAL OPTIONAL
OPTIONAL
OPTIONAL
BLOCK DIAGRAM OF VCTI AND PERIPHERALS

BLOCK DIAGRAM OF GENESIS IC AND PERIPHERALS
U200 GM5221-1 GENESIS LCD TV CONTROLLER
RESET Q
RGB-G
HS/VS-G
KEYBOARD
IR INPUT
U201 EEPROM
24LC16
U203
SERIAL FLASH
25VF040
SCART1 PIN 8
SCART2 PIN 8
STANDBY
STANDBY 2
24 BIT RGB OUTPUT
TO LVDS INTERFACE
HS/VS
PANEL CTRL
DE
CLOCK
PANEL EN
LED
LED 2
S1-MAIN-SW
PC-SD-SW
MEMORY CARD-RCA SW
RCA-S2-SW
BACKLIGHT-EN
BRT-ADJ.
PANEL PWR
BACK LIGHT
CONNECTOR
MUTE S202 SW
UPDATE CONN.
UART RX/TX

BLOCK DIAGRAM OF 14-23 INCH POWER SUPPLY
U602 MP1593
STEP DOWN
CONVERTOR
U604
SI9933
MOSFET
POWER
SWITCH
U603 LM1117
2 1
15"-17" 12V
20" 15V
S601
INV_POW
AMP_POW
INV_POW
AMP_POW
S600
F600
FUSE 5A
GND
1 2 3 4 5 6 7
4
3
2
1
S602
GND
24V
SUB_POW
F601
FUSE 5A
OPTIONAL FOR 14"-17"-20"
OPTIONAL FOR 20"W- 22"-23"
12V
(15V) U600 MP1593
STEP DOWN
CONVERTOR
U601 LM1117
1.8V STBY
3.3V STBY
5V_STBY
VOLTAGE
DOUBLER
33V For Tuner
PNL_EN
STBY
U606
LM1117
U605
MC78L08
8V
PANEL POWER
5V
3.3V
S603
Tuner Supply

1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
24V
GND
Stand-by 2
12V
GND
S101
JP100
U100 MP1593
STEP DOWN
CONVERTOR
U600 MP1593
STEP DOWN
CONVERTOR
Enable
U101 MC34063
STEP-UP
CONVERTOR
U605 MC78L08
U604
SI9933
MOSFET
POWER
SWITCH
U601 LM1117
U603 LM1117
24V
12V
PNL_PWR
12V-- R101 150K R609 220K R102 10K
5V-- R101 56K R609 NI R102 18K
5V _ STBY
AMP_POW_S
STBY
AMP_POW
5V
U606 LM1117
3V3
8V
33V For
Tuner
AMP_POW_S
INV_POW
3V3_STBY
1V8_STBY
BLOCK DIAGRAM OF 26 - 32 INCH POWER SUPPLY

GENESIS GM5221 LCD TV CONTROLLER
The gm5221 is an LCD TV controller supporting resolutions up to SXGA (1280x1024). The gm5221
leverages Genesis patented advanced image-processing technology as well as a proven integrated
ADC/PLL and an Ultra-Reliable DVI™ compliant digital receiver to provide excellent image quality.
gm5221 also integrates a microcontroller, an OSD controller, advanced color management and dual
LVDS transmitters.
1.1 gm5221 System Design Example
Figure 1 below shows a typical dual interface LCD TV system based on the gm5221. Designs based on
the gm5221 have reduced system cost, simplified hardware and firmware design and increased reliability
because only a minimal number of components are required in the system.
TUNER
PACK
VIDEO
DECODER
AUDIO
PROCESSOR
gm5221
L
C
D
D
I
S
P
L
A
Y
AUDIO
AMPL
V CHIP
V
G
A
D
V
I
Y
Pb
Pr
M
U
X
IR KEY BOARD
EEPROM
S
V
I
D
E
O
C
V
B
S
Figure 1. gm5221 System Design Example

1.2 gm5221 Family Features
• Intelligent Image Processing™
• Fully programmable zoom ratios
• High-quality shrink capability from UXGA resolution
• Programmable coefficients for variable sharpness control
• RealRecovery™ provides full color recovery image for
refresh rates higher than those supported by the LCD panel
• Analog RGB Input Port
• Supports SDTV RGB inputs in interlaced mode
• Supports EDTV (480p) up to 1080i HDTV inputs
• Supports mid level clamp for YPbPr inputs
• Macro vision decoding
• Supports up to 162 MHz (SXGA 75Hz / UXGA 60Hz)
• On-chip high-performance PLLs (single reference crystal
required)
• Composite-sync, Sync-on-Green (SOG) and Sync-on-Y
(SoY) support
• Input format detection
• Phase and image positioning
• Ultra-Reliable DVI-Compliant Input Port
• Operating up to 165 MHz (up to UXGA 60Hz)
• Direct connect to all DVI 1.0-compliant transmitters
• High-bandwidth Digital Content Protection (HDCP)
Note: HDCP function is available H version only.
• CCIR-656 8-bit Video Input Port
• Supporting NTSC / PAL interlaced and progressive
• Direct connect to commercially available video decoders
• Spatial de-interlacing
• Advanced Color Management
• Programmable gamma correction (CLUT)
• TV color controls including hue and saturation controls
• Full color matrix allows end-users to experience the same
colors as viewed on CRTs and other displays (e.g. sRGB
compliance)
• Advanced Active Color Management ™ (ACM-II) provide
flesh-tone compensation and image enhancement for video
preset modes like sport, nature .
• Adaptive Contrast and Color™ (ACC) ensures full dynamic
range is used in video content
• On-chip Versatile OSD Controller
• On-chip RAM for high-quality programmable menus
• 1, 2 and 4-bit per pixel character cells
• Horizontal and vertical stretch of OSD menus
• Blinking, transparency and blending
• Supports two independent OSD menu rectangles
• Proportional fonts
• Embedded X86 On-chip Microcontroller
• High-performance X86 MCU with on-chip RAM and ROM
• External parallel ROM or serial SPI ROM interface
• Unified memory architecture simplifies chip programming
• 23 general-purpose inputs/outputs (GPIOs) available
• 2-wire serial bus master to control NVRAM, video decoder
• Two DDC2Bi ports with DMA buffer to internal RAM
• Four PWM outputs for analog backlight control, audio, etc.
• General-purpose ADC’s for keypad and temperature sensing
• Integrated reset circuit
• Slow clock mode for 50mW sleep mode power consumption
• JTAG debug / ICE support for firmware debugging
• Built-in Test Pattern Generator
• Simplifies manufacturing / test
• Energy Spectrum Management (ESM™)
• Digital clock spectrum management
• Eliminates EMI suppression components and shielding
• Built-in LVDS Transmitters
• Four channel 6/8-bit LVDS transmitter
• Support for 8 or 6-bit panels with high-quality dithering
• Single / double wide up to SXGA 75Hz output
• Pin swap, odd / even swap and red / blue group swap of RGB
outputs for flexibility in board layout
• Highly integrated System-on-a-Chip
• All system clocks synthesized from a single external crystal
• 50mW power saving mode
• 5-Volt tolerant inputs
• Two Layer PCB support
• On-chip reset feature to eliminate external reset component
• Integrated Schmitt trigger for HSYNC and VSYNC
PACKAGE
• 208-pin PQFP
• 3.3V IO and 1.8V core power supplies

2 gm5221 Pinout
The gm5221 devices are packaged in a 208-pin Plastic Quad Flat Pack (PQFP).
N/C N/C
DCLK
JTAG_RESET
RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED
JTAG_TDO
RESERVED
JTAG_TDI
PPWR
PBIAS
GPIO15
RESERVED
HOST_SCL/UART_DI
HOST_SDA/UART_DO
RVDD_3.3
CRVSS
CVDD_1.8
CRVSS
DDC_SCL_VGA
DDC_SDA_VGA
DDC_SCL_DVI
DDC_SDA_DVI
GPIO0 GPIO1 GPIO2 GPIO3 GPIO4
CVDD_1.8
CRVSS
GPIO5 GPIO6
GPIO7/IRQin
GPIO8/IRQout
GPIO9/SCL
GPIO10/SDA
CRVSS
RVDD_3.3 CVDD_1.8
CRVSS
GPIO11/PWM0 GPIO12/PWM1 GPIO13/PWM2 GPIO14/PWM3
GPIO16/VDATA7 GPIO17/VDATA6
N/C
ROM_DATA3
ROM_DATA2
ROM_DATA1
ROM_DATA0
ROM_OEn
ROM_WEn
ROM_CSn
CRVSS
CVDD_1.8
RESERVED
AVDD_LV_E_3.3
AVSS_LV_E
CH3P_LV_E/ER0
CH3N_LV_E/ER1
CLKP_LV_E/ER2
CLKN_LV_E/ER3
CH2P_LV_E/ER4
CH2N_LV_E/ER5
CH1P_LV_E/ER6
CH1N_LV_E/ER7
CH0P_LV_E/EG0
CH0N_LV_E/EG1
AVSS_LV_E
AVDD_LV_E_3..3
AVSS_LV
AVDD_LV_3.3
AVDD_LV_O_3.3
AVSS_LV_O
CH3P_LV_O/EG2
CH3N_LV_O/EG3
CLKP_LV_O/EG4
CLKN_LV_O/EG5
CH2P_LV_O/EG6
CH2N_LV_O/EG7
CH1P_LV_O/EB0
CH1N_LV_O/EB1
CH0P_LV_O/EB2
CH0N_LV_O/EB3
AVSS_LV_O
AVDD_LV_O_3..3
CVDD_1..8
CVSS
EB4
EB5
EB6
EB7
DEN
DHS
DVS
RVDD_3.3
CRVSS
N/C
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144
143
142
141
140
139
138
137
136
135
134
133
132
131
130
129
128
127
126
125
124
123
122
121
120
119
118
117
116
115
114
113
112
111
110
109
108
107
106
105
AGND_ADC
RESERVED
AVDD_ADC_3.3
AGND_RED
RED-
RED+
AVDD_RED_3.3
AGND_GREEN
GREEN-
GREEN+
SOG_MCSS
AVDD_GREEN_3.3
AGND_BLUE
BLUE-
BLUE+
AVDD_BLUE_3.3
CRVSS
CVDD_1.8
RESERVED
VDD_RXPLL_1.8
GND_RXPLL
RESERVED
AVDD_RXC_3.3
RXC-
RXC+
AGND_RXC
AVDD_RX0_3.3
RX0-
RX0+
AGND_RX0
VDD_RX0_1.8
AVDD_RX1_3.3
RX1-
RX1+
AGND_RX1
VDD_RX1_1.8
AVDD_RX2_3.3
RX2-
RX2+
AGND_RX2
VDD_RX2_1.8
AGND_IMB
REXT
AVDD_IMB_3.3
VCLK
GPIO23/VDATA0
GPIO22/VDATA1
GPIO21/VDATA2
GPIO20/VDATA3
GPIO19/VDATA4
GPIO18/VDATA5
N/C
208 207 206 205 204 203 202 201 200 199 198 197 196 195 194 193 192 191 190 189 188 187 186 185 184 183 182 181 180 179 178 177 176 175 174 173 172 171 170 169 168 167 166 165 164 163 162 161 160 159 158 157
ROM_DATA4 ROM_DATA5 CRVSS RVDD_3.3 ROM_DATA6 ROM_DATA7 ROM_ADDR0 ROM_ADDR1 ROM_ADDR2 ROM_ADDR3 ROM_ADDR4 ROM_ADDR5 ROM_ADDR6 ROM_ADDR7 ROM_ADDR8 ROM_ADDR9 ROM_ADDR10 CRVSS RVDD_3.3 ROM_ADDR11 ROM_ADDR12 ROM_ADDR13 ROM_ADDR14 ROM_ADDR15 ROM_ADDR16 ROM_ADDR17 VSYNC HSYNC/CSYNC CRVSS CVDD_1.8 RESETn LBADC_GND LBADC_RETURN LBADC_IN3 LBADC_IN2 LBADC_IN1 LBADC_VDD_3.3 AVDD_RPLL_3.3 TCLK XTAL AGND_RPLL RESERVED VDD_RPLL_1.8 GND_RPLL VDD_ADC_1.8 GND_ADC N/C N/C N/C N/C N/C N/C
Figure 2. gm5221 Pin Out Diagram

VCT49xxI
Volume 1: General Description
General Description
1. Introduction
The VCT 49xxI is an IC family of high-quality single-
chip TV processors. Modular design and deep-submi-
cron technology allow the economic integration of fea-
tures in all classes of single-scan TV sets. The
VCT 49xxI family is based on functional blocks con-
tained and approved in existing products like
DRX 396xA, MSP 34x5G, VSP 94x7B, DDP 3315C,
and SDA 55xx.
Each member of the family contains the entire IF,
audio, video, display, and deflection processing for 4:3
and 16:9 50/60-Hz mono and stereo TV sets. The inte-
grated microcontroller is supported by a powerful OSD
generator with integrated Teletext & CC acquisition
including on-chip page memory.
Fig. 1–1: Single-chip VCT 49xxI
1.1. Features
The VCT 49xxI family offers a rich feature set, cover-
ing the whole range of state-of-the-art 50/60-Hz TV
applications.
– PSSDIP88-1/-2 package
– Submicron CMOS technology
– Low-power standby mode
– Single 20.25-MHz reference crystal
– 8-bit 8051 instruction set compatible CPU
– Up to 256 kB on-chip program ROM
– WST,PDC,VPS,andWSSacquisition
– ClosedCaptionandV-chipacquisition
– Up to 10 pages on-chip teletext memory
– Multi-standard QSS IF processing with single SAW
– FM Radio and RDS with standard TV tuner
– TV-sound demodulation:
• all A2 standards
• all NICAM standards
• BTSC/SAP with MNR (DBX optional)
•EIA-J
– Baseband sound processing for loudspeaker chan-
nel:
• volume
• bass and treble
• loudness
• balance
• spatial effect (e.g. pseudo stereo)
• Micronas AROUND (virtual Dolby optional)
• Micronas BASS
– CVBS, S-VHS, YCrCband RGB inputs
– 4H adaptive comb filter (PAL/NTSC)
– multi-standard color decoder (PAL/NTSC/SECAM)
– Nonlinear horizontal scaling “panorama vision”
– Luma and chroma transient improvement (LTI, CTI)
– Non-linear color space enhancement (NCE)
– Dynamic black level expander (BLE)
– Scan velocity modulation output
– Soft start/stop of H-drive
– Vertical angle and bow correction
– Average and peak beam current limiter
– Nonlinear and dynamic EHT compensation
– Black switch off procedure (BSO)
Video & Sound IF
DRX 396xA
Audio Processing
MSP 34x5G
Video Processing
VSP 94x7B
Control, OSD, Text
SDA 55xx
Display & Deflection
DDP 3315C
VCT 49xyI

Fig. 1–2: Block diagram of the VCT 49xxI
XTAL1
IF
Frontend
Slicer
Video
Backend
IF
Processor Sound Demodulator Audio Processor
Display
Generator
Bus
Arbiter
20kB XRAM 256kB
Prog ROM Clock Generator
Reset & Test
Logic
I2C Master/
Slave
24kB
Char ROM TEST
RESETQ
XTAL2
I2C
Pxy
CVBS in
IFIN-
IFIN+
TAGC
SIF
YCrCb in
CVBS out
RGB in
AOUT SPEAKER
RGB out
SVM
RGB in
SENSE
RSW
VERT
EW
HOUT
PROT
HFLB
Panorama
Scaler
Display &
Deflection
Processor
Timer
CRT
PWM
ADC
UART
Watchdog
RTC
I/O-Ports
Memory
Interface
ADB, DB, PSENQ,
PSWEQ, WRQ, RDQ
CPU
8051
AIN
Video
Frontend
Color
Decoder
Component
Interface
Comb
Filter
VCT 49xyI
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
25
26
27
28
29
30
31
32
33
34
35
36
24
38
44
43
42
41
40
39
37
GOUT
GIN
BIN
SVMOUT
RIN
FBIN
VRD
XREF
VSUP3.3BE
GND
BOUT
ROUT
VSUP3.3IO
GND
HFLB
HOUT
SAFETY
VPROT
GNDDAC
VSUP3.3DAC
SDA
SCL
P21 / PWMV
P17
P20 / DFVBL
P16
P15
P14
P13
P12
P11
VSUP3.3FE
GND
GNDM
SENSE
GND
VSUP5.0BE
TEST
VERT+
VERT-
EW
RSW2
RSW1
P10
88
87
86
85
84
83
82
81
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
64
63
62
61
60
59
58
57
56
55
54
53
65
51
45
46
47
48
49
50
52
SIF / AIN1R
RESETQ
TAGC
VREFIF
VREFAU
SPEAKERL
VSUP5.0IF
XTAL2
VSUP3.3DIG
GND
IFIN-
GNDIF
VSUP1.8DIG
GND
XTAL1
VIN11
VIN9
VIN10
VIN7
VIN8
VIN6
VIN5
VIN4
VIN3
VIN1
VIN2
P22
P23
VOUT1
VOUT2
VOUT3
VSUP1.8FE
GND
SPEAKERR
AOUT1L
GND
VSUP8.0AU
AIN1L
AIN2R
AIN2L
AIN3R / AOUT2R
AIN3L / AOUT2L
AOUT1R
IFIN+
PSSDIP88-2 package