Vizio VX37L HDTV Schematic

Service Manual

Model #: VIZIO VX37L HDTV

V, Inc

320A Kalmus Drive Costa Mesa, CA 92626

TEL : [phone] FAX :[phone]

Top Confidential

Table of Contents

CONTENTS PAGE

Sections

1. Features 1-1

2. Specifications 2-1

3. On Screen Display 3-1

4. Factory Preset Timings

5. Pin Assignment

4-1

5-1

6. Main Board I/O Connections 6-1

7. Theory of Circuit Operation 7-1

8. Waveforms 8-1

9. Trouble Shooting 9-1

10. Block Diagram 10-1

11. Spare parts list 11-1

12. Complete Parts List 12-1

Appendix

1. Main Board Circuit Diagram

2. Main Board PCB Layout

3. Assembly Explosion Drawing

Block Diagram

VIZIO VX37L HDTV Service Manual

VINC Service Manual

VIZIO VX37L HDTV

COPYRIGHT © 2000 V, INC. ALL RIGHTS RESERVED.

IBM and IBM products are registered trademarks of International Business Machines
Corporation.

Macintosh and Power Macintosh are registered trademarks of Apple Computer, Inc.

VINC and VINC products are registered trademarks of V, Inc.

VESA, EDID, DPMS and DDC are registered trademarks of Video Electronics Standards
Association (VESA).

Energy Star is a registered trademark of the US Environmental Protection Agency (EPA).

No part of this document may be copied, reproduced or transmitted by any means for any
purpose without prior written permission from VINC.

FCC INFORMATION
This equipment has been tested and found to comply with the limits of a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates,
uses and can radiate radio frequency energy, and if not installed and used in accordance with
the instructions, may cause harmful interference to radio communications. However, there is
no guarantee that the interference will not occur in a particular installation. If this equipment
does cause unacceptable interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures -- reorient or relocate the receiving
antenna; increase the separation between equipment and receiver; or connect the into an
outlet on a circuit different from that to which the receiver is connected.

FCC WARNING
To assure continued FCC compliance, the user must use a grounded power supply cord and
the provided shielded video interface cable with bonded ferrite cores. Also, any unauthorized
changes or modifications to Amtrak products will void the user’s authority to operate this
device. Thus VINC Will not be held responsible for the product and its safety.

CE CERTIFICATION
This device complies with the requirements of the EEC directive 89/336/EEC with regard to
“Electromagnetic compatibility.”

SAFETY CAUTION
Use a power cable that is properly grounded. Always use the AC cords as follows – USA (UL);
Canada (CSA); Germany (VDE); Switzerland (SEV); Britain (BASEC/BS); Japan (Electric
Appliance Control Act); or an AC cord that meets the local safety standards.

VIZIO VX37L HDTV Service Manual

Chapter 1 Features

1. Built in TV channel selector for TV viewing

2. Simulatnueous display of PC and TV images

3. Connectable to PC’s analog RGB port

4. Built in S-video, HDTV, composite video, HDMI and TV out

5. Built in auto adjust function for automatic adjument of screen display

6. Smoothing function enables display of smooth texts and graphics even if

image withresolution lower than 1366x768 is magnified

7. Picture In Picture (PIP) funtion to show TV or VCR images

8. Power saving to reduce consumption power too less than 3W

9. On Screen Display: user can define display mode (i.e. color, brightness,

contrast, sharpness, backlight), sound setting, PIP, TV channel program,

aspect and gamma or reset all setting.

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Chapter 2 Specification

1. LCD CHARACTERISTICS

Type: LPL LC370WX1-SLA1

Size: 3702inch

Display Size: 37.02 inches (940.3mm) diagonal

Outline Dimension: 877.0 mm (H) x 516.8 mm (V) x 55.5 mm (D) (Typ.)

Pixel Pitch: 0.200mm x 0.600mm x RGB

Pixel Format: 1366 horiz. By 768 vert. Pixels RGB strip arrangement

Contrast ratio: 1.CR : 1000(Typ) 2. CR WITH AI : 2000(Typ)

Luminance, White: 500 cd/m
Display Operating Mode: normally Black

Surface Treatment: Hard Coating (3H) ,Anti-glare treatment of the front polarizer.

2. OPTICAL CHARACTERISTICS

Viewing Angle (CR>10)

Left: 89°typ.

Right: 89°typ.

Top: 89°typ.

Bottom: 89°typ.

3. SIGNAL (Refer to the Timing Chart)

Sync Signal

1) Type: TMDS

2) Input Voltage Level: 90~240 Vac, 50/ 60 Hz

4.Input Connectors

2 (Typ)

RJ11, D-SUB15PIN (MINI, 3rows), Headphone, HDMIX2, RCAX3 (component),

RCAX2 (AUDIO in), RCAX3 (composite), RCAX2 (AUDIO in), S-Video, Tuner.

5. POWER SUPPLY

Power Consumption: 280W MAX

Power OFF: to less than 3W MAX

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6.Speaker

Output 10W (max) X2

7. ENVIRONMENT

5-1. Operating Temperature: 5c~35c (Ambient)

5-2. Operating Humidity: Ta= 35 °C, 90%RH (Non-condensing)

5-3. Operating Altitude: 0 - 14,000 feet (4267.2m)(Non-Operating)

8. DIMENSIONS (Physical dimension)

Width: 800 mm.

Depth: 1060 mm

+/- 20 mm

+/- 20 mm

Height: 360 mm +/- 20 mm

9. WEIGHT (Physical weight)

a. Net: 19.1+/-0.5kgs

b. Gross: 24.6+/-0.5kgsn

9-1. MOUNTING PRECAUTIONS

(1) You must mount a module using holes arranged in four corners or four sides.

(2) You should consider the mounting structure so that uneven force (ex. Twisted

stress) is not applied to the module. And the case on which a module is mounted

should have sufficient strength so that external force is not transmitted directly to

the module.

(3) Please attach the surface transparent protective plate to the surface in order to

protect the polarizer.

Transparent protective plate should have sufficient strength in order to the resist

external force.

(4) You should adopt radiation structure to satisfy the temperature specification.

(5) Acetic acid type and chlorine type materials for the cover case are not desirable

because the former generates corrosive gas of attacking the polarizer at high

temperature and the latter causes circuit break by electro-chemical reaction.

(6) Do not touch, push or rub the exposed polarizes with glass, tweezers or anything

harder than HB pencil lead. And please do not rub with dust clothes with chemical

treatment.

Do not touch the surface of polarizer for bare hand or greasy cloth.(Some

cosmetics are detrimental to the polarizer.)

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(7) When the surface becomes dusty, please wipe gently with absorbent cotton or

other soft materials like chamois soaks with petroleum benzene. Normal-hexane

is recommended for cleaning the adhesives used to attach front / rear polarizers.

Do not use acetone, toluene and alcohol because they cause chemical damage to

the polarizer.

(8) Wipe off saliva or water drops as soon as possible. Their long time contact with

polarizer causes deformations and color fading.

(9) Do not open the case because inside circuits do not have sufficient strength.

9-2. OPERATING PRECAUTIONS

(1) The spike noise causes the mis-operation of circuits. It should be lower than

following voltage :

V=±200mV(Over and under shoot voltage)

(2) Response time depends on the temperature. (In lower temperature, it becomes

longer.)

(3) Brightness depends on the temperature. (In lower temperature, it becomes

lower.)And in lower temperature, response time (required time that brightness is

stable after turned on) becomes longer.

(4) Be careful for condensation at sudden temperature change. Condensation makes

damage to polarizer or electrical contacted parts. And after fading condensation,

smear or spot will occur.

(5) When fixed patterns are displayed for a long time, remnant image is likely to

occur.

(6) Module has high frequency circuits. System manufacturers shall do sufficient

suppression to the electromagnetic interference. Grounding and shielding

methods may be important to minimize the interference.

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9-3. HANDLING PRECAUTIONS FOR PROTECTION

(1) The protection film is attached to the bezel with a small masking tape. When the

protection film is peeled off, static electricity is generated between the film and

polarizer. This should be peeled off slowly and carefully by people who are

electrically grounded and with well ion-blown equipment or in such a condition,

etc.

(2) When the module with protection film attached is stored for a long time,

sometimes there remains a very small amount of glue still on the bezel after the

protection film is peeled off.

(3) You can remove the glue easily. When the glue remains on the bezel surface or its

vestige is recognized, please wipe them off with absorbent cotton waste or other

soft material like chamois soaked with normal-hexane.

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Chapter 3 On Screen Display

Main unit button

Power

MENU

CH ▲

CH ▼

VOL +

VOL -

Input

TV Source

A. Picture Adjust：

a. Picture Mode (Standard/Movie /Game / Custom)

b. Backlight (0~100)

c. Contrast (0~100)

d. Brightness (0~100)

e. Color (saturation)(0~100)

f. Tint (hue) (0~100)

g. Sharpness (0~7)

h. Color Temperature (Cool/Normal/Warm/Custom)

B. Audio Adjust：

a. Volume (0~100)

b. Bass (0~100)

c. Treble (0~100)

d. Balance (0~100)

e. Surround (ON/OFF)

f. Speakers (ON/OFF)

C. Special Features：

a. Language (English/Français/Espaňol)

b. Sleep Timer (OFF/30Min/60Min/90Min/120Min)

c. Analog CC (OFF/CC1~4/TT1~4)

d. Digital CC (OFF/CC1~4/Service1~6)

e. Digital CC Style

f. PIP Position (TL/TC/TR/ML/MR/BL/BC/BR)

g. Rest All Setting

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D. TV Tuner Setup：

a. Tuner Mode (Cable/Air)

b. Auto Search

c. Skip Channel

E. Parental Control：

a. Parental Lock Enable (ON/OFF)

b. TV Rating

c. Move Rating

d. Block Unrated TV (NO/Yes)

e. Access Code Edit

RGB Mode

A. Picture Adjust：

a. Auto Adjust

b. Backlight (0~100)

c. Contrast (0~100)

d. Brightness (0~100)

e. Color Temperature (9300/6300/Custom)

f. Tint (0~100)

g. H-Size (0~255)

h. Horizontal Shift (0~63)

i. Fine Tune (0~31)

B. Audio Adjust：

a. Volume (0~100)

b. Bass (0~100)

c. Treble (0~100)

d. Balance (0~100)

e. Surround (ON/OFF)

f. Speakers (ON/OFF)

C. Special Features：

a. Language (English/Français/Espaňol)

b. Sleep Timer (OFF/30Min/60Min/90Min/120Min)

c. PIP Position (TL/TC/TR/ML/MR/BL/BC/BR)

d. Rest All Setting

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AV COMPONENT MODE

A. Picture Adjust：

a. Picture Mode (Standard/Movie /Game / Custom)

b. Backlight (0~100)

c. Contrast (0~100)

d. Brightness (0~100)

e. Color (saturation)(0~100)

f. Tint (hue) (0~100)

g. Sharpness (0~7)

h. Color Temperature (Cool/Normal/Warm/Custom)

B. Audio Adjust：

a. Volume (0~100)

b. Bass (0~100)

c. Treble (0~100)

d. Balance (0~100)

e. Surround (ON/OFF)

f. Speakers (ON/OFF)

C. Special Features：

a. Language (English/Français/Espaňol)

b. Sleep Timer (OFF/30Min/60Min/90Min/120Min)

c. Analog CC (OFF/CC1~4/TT1~4)

d. PIP Position (TL/TC/TR/ML/MR/BL/BC/BR)

e. Rest All Setting

D. Parental Control：

a. Parental Lock Enable (ON/OFF)

b. TV Rating

c. Move Rating

d. Block Unrated TV (NO/Yes)

e. Access Code Edit

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HDMI MODE：

A. Picture Adjust：

a. Picture Mode (Standard/Movie /Game / Custom)

b. Backlight (0~100)

c. Contrast (0~100)

d. Brightness (0~100)

e. Color (saturation)(0~100)

f. Tint (hue) (0~100)

g. Sharpness (0~7)

h. Color Temperature (Cool/Normal/Warm/Custom)

B. Audio Adjust：

a. Volume (0~100)

b. Bass (0~100)

c. Treble (0~100)

d. Balance (0~100)

e. Surround (ON/OFF)

f. Speakers (ON/OFF)

C. Special Features：

a. Language (English/Français/Espaňol)

b. Sleep Timer (OFF/30Min/60Min/90Min/120Min)

c. PIP Position (TL/TC/TR/ML/MR/BL/BC/BR)

d. Rest All Setting

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Chapter4 Factory preset timings

This timing chart is already preset for the TFT LCD analog & digital display
monitors.

Resolution

Refresh

rate

640x480 60Hz 31.5kHz 59.94Hz N N 25.175

640x480 75Hz 37.5kHz 75.00Hz N N 31.500

800X600 60Hz 37.9kHz 60.317Hz P P 40.000

800x600 75Hz 46.9kHz 75.00Hz P P 49.500

800X600 85Hz 53.7kHz 85.06Hz P P 56.250

1024x768 60Hz 48.4kHz 60.01Hz N N 65.000

1024X768 75Hz 60.0kHz 75.03Hz P P 78.750

720x400 70Hz 31.46kHz 70.08Hz N P 28.320

1366X768 60 47.7KHZ 60.00HZ P N 85.500

Remark: P: positive N: negative

Horizontal

Frequency

Vertical

Frequency

Horizontal

Polarity

Vertical

Polarity

Pixel

Rate

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Chapter5 Pin Assignment

The TFT LCD analog display monitors use a 15 Pin Mini D-Sub connector as

video input source.

Pin Description

1 Red

2 Green

3 Blue

4 Ground

5 Ground

6 R-Ground

7 G-Ground

8 B-Ground

9 +5V for DDC

10 Ground

11 No Connection

12 (SDA)

13 H-Sync (Composite Sync)

14 V-Sync

15 (SCL)

1

11

5

106

15

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HDMI CONNECT PIN ASSIGNMENT

PIN SIGNAL ASSIGNMENT

1 TMDS Data2+

2 TMDS Data2 Shield

3 TMDS Data2-

4 TMDS Data1+

5 TMDS Data1 Shield

6 TMDS Data1-

7 TMDS Data0+

8 TMDS Data0 Shield

9 TMDS Data0-

10 TMDS Clock+

11 TMDS Clock Shield

12 TMDS Clock-

13 CEC

14 Reserved (N.C on device)

15 SCL

16 SDA

17 DDC/CEC Ground

18 +5V Power

19 Hot Plug Detect

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Four-Pin mini DIN S-Video Connector

a. Pin Assignment

b. Signal Level Video (Y): Analog 0.1Vp-p/75

Video (C): Analog 0.286p-p/75

Sync (H+V): 0.3V below Video (Y)

c. Frequency H: 15.734KHz V: 60Hz (NTSC)

Signal Level Video (Y) : Analog 0.1Vp-p/75

Video (C) : Analog 0.286p-p/75

Sync (H+V): 0.3V below Video (Y)

Frequency H: 15.734Khz V: 60HZ (NTSC)

F-Type TV RF connector

a. Signal Level 60dBµV typical

b. System NTSC

c. Frequency 55~801MHz (NTSC)

PC connector 15 pin male D-sub connector

a. Pin Assignment Refer to Section 2.3.10

b. Signal Level Video (R, G, B): Analog 0.7Vp-p/75

Sync (H, V): TTL level

RGB Signal:

a. Sync Type TTL (Separate / Composite) or Sync. On Green



b. Sync polarity Positive or Negative

c. Video Amplitude RGB: 0.7Vp-p

d. Frequency H: support to 30K~70KHz

V: support to 50~85Hz

Pixel Clock: support to 110MHz

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HDMI Signal (HDMI):

a. Pin Assignment Refer to HDNI Pin Assignment

b. Type A

c. Polarity Positive or Negative

d. Frequency

H: 15.734KHz V: 60Hz (NTSC-480i)

H: 31KHz V: 60Hz (NTSC-480p)

H: 45KHz V: 60Hz (NTSC-720p)

H: 33KHz V: 60Hz (NTSC-1080i)

Component signal (Component 1 and Component 2)

Component 1

a. Frequency H: 15.734KHz V: 60Hz (NTSC-480i)

Component 2

H: 31KHz V: 60Hz (NTSC-480p)

H: 45KHz V: 60Hz (NTSC-720p)

H: 33KHz V: 60Hz (NTSC-1080i)

b. Signal level Y: 1Vp-p Pb: ±0.350Vp-p Pr: ±0.350Vp-p

c. Impedance 75

a. Frequency H: 15.734KHz V: 60Hz (NTSC-480i)

H: 31KHz V: 60Hz (NTSC-480p)

H: 45KHz V: 60Hz (NTSC-720p)

H: 33KHz V: 60Hz (NTSC-1080i)

b. Signal level Y: 1Vp-p Pb: ±0.350Vp-p Pr: ±0.350Vp-p

c. Impedance 75

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Chapter6 Main Board I/o Connections

J6 CONNECTION (TOP→BOTTOM)

Pin Description

1 “+5V”

2 “+3.3V”

3 “ADCKEY”

4 “LED”

5 “PWR KEY”

6 “GND”

7 “GND”

8 “IR”

J7 CONNECTION (TOP→BOTTOM)

Pin Description

1 “POWRSW”

2 “+12V”

3 “+12V”

4 “+12V”

5 “GND”

6 “GND”

7 “GND”

8 “GND”

9 “GND”

10 “+5V”

11 “+5V”

12 +5V

13 “PWM”

14 “BL ON/OFF”

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Chapter 7 Theory of Circuit Operation

The operation of D-SUB 15pin route

The D-SUB 15pin is input analog signal to the MTK8202 transfer A/D converter then generates

the vertical and horizontal timing signals for display device.

The operation of HDMII CON route

The HDMI 1&2 CON is input digital signal to the PI3HDMI412FT switch output signal is process

to the MT8293. Then transfer to the MTK8202, the MTK8202 generates the vertical and

horizontal timing signals for display device.

The operation of HDTV & Component route

HDTV & Component signal is input to the MTK8202 then MTK8202 generates the vertical and

horizontal timing signals for display device.

The operation of Video 1,2,3 & S-Video route

The Video 1,2 and S-Video signal is transmission signal to the MTK8202 then MTK8202

generates the vertical and horizontal timing signals for display device.

The operation of TV route

TV signal is processes to the tuner and output to MTK8202 then MTK8202 generates the vertical

and horizontal timing signals for display device. Audio is processes to the tuner output to SIF

circuit and output to MTK8202.Then MTK8202 process to wm8776 and output to TDA8946J

transfer to speaker

The operation of DTV route

DTV signal is processes to the tuner and transmission to MT5112 and output signal to MT5351

then MT5351 output to MT8202 generates the vertical and horizontal timing signals for display

device.

The operation of keypad

There are 7 keys to control and select the function of L42 and also has one LED to indicate the

status of operation. They are “Power, ▼▲, + -, Input, OSD”.

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MT8202 Application

MT8202 is a highly integrated video and audio single chip processor for emerging

HDTV-Ready LCD TV. It includes one 3D/2D TV Decoder recovering the best image

from CVBS, and in addition, its analog input also support popular S-Video, Component,

VGA video source. On-chip advanced motion adaptive de-interlacer (MDDitm) converts

accordingly the interlace video into smooth non-flicking progressive motion pictures.

With on-chip advanced 2D Graphic processor,MT8202 provides customers with high

quality UI adding significant end product value. Flexible scalar provides wide adoption to

various LCD panel for different video sources. Its on-chip audio processor decodes

whole world standard audio signals from tuner with lip sync control, delivering high

quality post-processed sound effect to customers. On-chip microprocessor and

reference FW reduces the system BOM and shortens the schedule of UI design by

high-level C program. With truly SOC design, MT8202 offers our customers the real

cost-effective high performance HDTV-ready solution.

BOLOCK DIAGRAM

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1. Video input

a. Input Multiplexing

1.component X2

2.composite X2

3.s-videoX1

4.HDMI X2

5.VGA X1

6.RF&DTV X1

b. Input formats:

1.support HDTV 480i/480p/720p/1080p

2.support Y/C signal 1VP-P/75Ω

3.support Y/C signal 1VP-P/75Ω

4.support 480i/408p/720p/1080i/1080p

5.support VGA input up to 1366x168@60HZ

6.support RF NTSC system Frequency 55~801MHZ;DTV 480i/480p/720p/1080p

2. Decoder

TVD

1.Single 2nd generation TV decoder

2.Automatic TV standard detection supporting NTSC, NTSC-4.43, PAL (B, G, D, H, M, N, I,

Nc), PAL (Nc), PAL, SECAM

3.Enhanced 2nd generation NTSC/PAL Motion Adaptive 3D comb filter

4.Motion Adaptive 3D Noise Reduction

5.Embedded VBI decoder for Closed-Caption/XDS/ Teletext/WSS/VPS

6.Supporting Macro vision detection

YPbPr/Scart/D-connector

1.Supporting HDTV 480i/480p/576i/576p/720p/1080i input

2.Smart detection on Scart function for European region

3.Smart detection on D-connector for Japan region

4.Supporting SCART RGB inputs mixed with composite signal by adjustable horizontal delay

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VGA

1.Supporting various VGA input timings up to SXGA (1280x1024@75Hz).

2.Supporting Separate/Composite/SOG sync types

Digital port

1.1 digital port supporting DVI 24-bit RGB or CCIR-656/601 digital video input format

2.1 additional 8 bit digital port for ITU656 video format

VBI

1.Dual VBI decoders for the application of V-Chip/Closed-Caption/XDS/ Teletext/WSS/VPS

2.Supporting external VBI decoder by YPrPb input

3.VBI decoder up to 1000 pages Teletext.

3. Support Formats:

Support NTSC, NTSC-4.43

Automatic Luma / Chroma gain control

Automatic TV standard detection

NTSC Motion Adaptive 3D comb filter

Motion adaptive 3D Noise Reduction

VBI decoder for closed-caption/XDS/Teletext/WSS/VPS

Macro vision detection

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BOLOCK DIAGRAM

4. 2D-Graphic/OSD processor

Embedded two backend RGB domain OSD planes and one YUV domain OSD plane. to

support Main/PIP Teletext/Close-caption functions together with setup menu

1.Supporting alpha blending among these two planes and video

2.Supporting Text/Bitmap decoder

3.Supporting line/rectangle/gradient fill

4.Supporting bitblt

5.Supporting color Key function

6.Supporting Clip Mask

7.65535/256/16/4/2-color bitmap format OSD,

8.Automatic vertical scrolling of OSD image

9.Supporting OSD mirror and upside down

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5. Microprocessor interface

When power is supplied and power key is pressed then the rest circuit lets Reset to low state

that will reset the MTK8202 to initial state. After that the Reset will transits to high state and the

MTK8202 start to work that microprocessor executes the programs and configures the internal

registers. The execution speed of CPU is 162 MHz.

1. The I/O ports are configured as follows：

Pin name Function Type Description

AD17 PWM Output

R3 GPIO2 Output Panel on/off

V1 GPIO7 Output System power

Y2 GPIO16 Output LVDS on/off

R4 GPIO3 Output ATSC POW on/off

AD22 IOSCL Input / Output SDA

AV22 IOSDA Input / Output SCL

W3 GPIO13 Output HDMI Switch Select

Y4 GPIO_18 Output MT8293 Reset

W4 GPIO_14 Output MT8293 acknowledge to player

B19 ADC_IN0 Input Key ADC detection

L4 IR Input IR Receiver

Y1 GPIO_15 Output SYSTEM EEPROM Read / Write

Backlight Adjust

T2 GPIO_23 Output LED Backlight

L2 RESETn Input MT8202 RESET

R2 GPIO_1 Output DTV & HDMI Select PIN

T4 GPIO_4 Output DTV & ATV Select PIN

2. PIP/POP HARDWARE LIMITION:

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6. Video processor

1.Color Management

Fully 10-bit processing to enhance the video quality

Advanced flesh tone and multiple-color enhancement. (For skin, sky, and grass…)

Gamma/anti-Gamma correction

Advanced Color Transient Improvement (CTI)

Saturation/hue adjustment

2.Contrast/Brightness/Sharpness Management

Sharpness and DLTI/DCTI

Brightness and contrast adjustment

Black level extender

White peak level limiter

Adaptive Luma/Chroma management

3.De-interlacing

2nd generation advanced Motion adaptive de-interlacing

Automatic detect film or video source

3:2/2:2 pull down source detection

Main/PIP 2 independent de-interlacing processor

4.Scaling

2nd generation high resolution arbitrary ratio vertical/horizontal scaling of video, from 1/32X

to 32X

Advanced linear and non-linear Panorama scaling

Programmable Zoom viewer

Picture-in-Picture (PIP)

Picture-Out-Picture (POP)

5.Display

Advanced dithering processing for LCD display with 6/8/10 bit output

10bit gamma correction

Supporting alpha blending for Video and two OSD planes

Frame rate conversion

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6.Seamless performance comparing demonstration function

Support Left/Right video processing comparing function without additional resources

(DRAM…) for customers’ demonstration

All the video functions (De-interlace/3D comb/NR/Flesh tone/CTI) can be included

7. DRAM Usage

1.For features of 8202, Dual for enhance features support, and single 8x16 DDR for

simple function support Lists are the comparison chart between function support

lists of (2xDDR) and (1xDDR)

2.For single DDR, 8202 only support 1080i bob mode de-interlacing. (Non-3D de interlace)

3.With single DDR, it is suggested not to support PIP/POP features. Due to DDR Bandwidth

limitation on PIP/POP when single DDR.

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8.DDR SDRAM (V58C2128164SBI5) Application

Pin description

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Command Truth Table

1. Power-Up Functional Description

The following sequence is required for POWER UP.

1. Apply power and attempt to maintain CKE at a low state (all other inputs may be undefined.)

- Apply VDD before or at the same time as VDDQ.

- Apply VDDQ before or at the same time as VTT & Vref.

2. Start clock and maintain stable condition for a minimum of 200us.

3. The minimum of 200us after stable power and clock (CLK, CLK), apply NOP & take CKE high.

4. Precharge all banks.

5. Issue EMRS to enable DLL.(To issue “DLL Enable” command, provide “Low” to A0, “High” to

BA0 and “Low” to all of the rest address pins, A1~A11 and BA1)

6. Issue a mode register set command for “DLL reset”. The additional 200 cycles of clock input is

required to lock the DLL. (To issue DLL reset command, provide “High” to A8 and “Low” to

BA0)

7. Issue precharge commands for all banks of the device.

8. Issue 2 or more auto-refresh commands.

9. Issue a mode register set command to initialize device operation

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2. Mode Register Set (MRS)

The mode register stores the data for controlling the various operating modes of DDR SDRAM. It

programs CAS latency, addressing mode, burst length, test mode, DLL reset and various vendor

specific options to make DDR SDRAM useful for a variety of different applications. The default

value of the mode register is not defined, therefore the mode register must be written after EMRS

setting for proper DDR SDRAM operation.

The mode register is written by asserting low on CS, RAS, CAS, WE and BA0 (The DDR SDRAM

should be in all bank precharge with CKE already high prior to writing into the mode register).

The state of address pins A0 ~ A11 in the same cycle as CS, RAS, CAS, WE and BA0 low is

written in the mode register. Two clock cycles are required to meet tMRD spec. The mode

register contents can be changed using the same command and clock cycle requirements during

operation as long as all banks are in the idle state. The mode register is divided into various

fields depending on functionality. The burst length uses A0 ~ A2, addressing mode uses A3,

CAS latency (read latency from column address) uses A4 ~ A6. A7 is a ProMOS specific test

mode during production test. A8 is used for DLL reset. A7 must be set to low for normal MRS

operation. Refer to the table for specific codes for various burst length, addressing modes and

CAS latencies.

1. MRS can be issued only at all banks precharge state.

2. Minimum tRP is required to issue MRS command.

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3. Precharge

The Auto Precharge operation can be issued by having column address A10 high when a Read

or Write command is issued. If A10 is low when a Read or Write command is issued, then normal

Read or Write burst operation is executed and the bank remains active at the completion of the

burst sequence. When the Auto Precharge command is activated, the active bank automatically

begins to precharge at the earliest possible moment during the Read or Write cycle once

tRAS(min) is satisfied.

Read with Auto Precharge

If a Read with Auto Precharge command is initiated, the DDR SDRAM will enter the precharge

operation N-clock cycles measured from the last data of the burst read cycle where N is equal to

the CAS latency programmed into the device. Once the autoprecharge operation has begun, the

bank cannot be reactivated until the minimum precharge time (tRP) has been satisfied.

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