RTD2020

2002/11/12

Rev.1.20

REALTEK

FLAT PANEL DISPLAY CONTROLLER

RTD2020

Product Brief

This document contains introductory information pertaining to the Realtek RTD2020 Flat Panel Display Controller. Because
there is proprietary and confidential information contained in the complete specifications, this brief is offered to those interested
in the chip. For a more detailed description of the device, please contact your Realtek sales representative.

1. Features.................................................................................................................................................................................... 2

2. General Description ................................................................................................................................................................ 3

3. Block Diagram......................................................................................................................................................................... 4

4. Pin Assignments....................................................................................................................................................................... 5

5. Pin Descriptions....................................................................................................................................................................... 6

5.1 ADC ................................................................................................................................................................................... 6

5.2 PLL..................................................................................................................................................................................... 6

5.3 Control Interface ................................................................................................................................................................ 7

5.4 Digital Input ....................................................................................................................................................................... 8

5.5 Display Port........................................................................................................................................................................ 8

5.6 Miscellaneous Interface...................................................................................................................................................... 9

5.7 DDC Channel ..................................................................................................................................................................... 9

5.8 Power & Ground ................................................................................................................................................................ 9

5.9 MCU Interface.................................................................................................................................................................. 10

RTD2020

2002/11/12

Rev.1.20

1. Features

General
! Integrated Spread-Spectrum DCLK PLL
! Integrated 8-bit triple-channel 140MHz ADC/PLL
! Integrated programmable timing controller
! Integrated microcontroller compatible with the

standard 8032

! 24 General-purpose input/outputs (GPIOs)
! Embedded fully functional multi-language OSD

support

! Embedded DDC supports DDC1, DDC2B, and

DDC/CI

! Supports ISP functionality on DDC channel
! 3 Embedded programmable PWM
! Zoom scaling up and down
! Embedded Pattern Generator
! No external memory required
! Requires only one crystal to generate all timing

Analog RGB Input Interface
! Supports up to 140MHz (SXGA @ 75Hz)
! Supports Sync On Green (SOG) and de-composite

sync modes

! On-chip high-performance PLLs

Digital Input Interface
! Supports 24-bit pixel digital input up to 160MHz
! Supports 12-bit DVO input
! Supports 16/24-bit YUV422/444 video format

input

! Supports 8-bit video format input
! Built-in YUV to RGB color space converter &

de-interlace

! Capture window auto position & auto phase

tracking capability

Auto Detection /Auto Calibration
! Input format detection
! Compatibility with standard VESA mode and

support for user-defined mode

! Smart engine for Phase and Image position

calibration

Scaling
! Fully programmable zoom ratios
! Independent horizontal/vertical scaling
! Advanced zoom algorithm provides high image

quality

! Sharpness/Smooth filter enhancement

Color Processor
! Digital brightness and contrast adjustments
! Gamma correction
! Dithering logic for 18-bit panel color depth

enhancement

Output Interface
! Fully programmable, built-in display timing

generator

! 1 and 2-pixel/clock panel support, up to 140MHz
! Pin swap, odd/even swap and red/blue group swap
! Programmable TCON function support
! Reduced EMI and Power saving features

Host Interface
! Supports 3/4 pins MCU serial bus interface
! Support parallel bus interface while using internal

MCU

Embedded OSD
! 12*18 dot font per character
! Embedded 256 characters and symbols including

16 multi-color symbols

! User font RAM, which allows programming of 128

special symbols

! 7 background colors and 8 character colors
! Programmable width and height control
! 4 background windows
! Selectable shadow color for windows and

characters

! Intensity, blinking effects
! Fade-in/out effect
! Frame shadowing and independent row shadowing
! Frame bordering and independent row bordering
! 4 channel 8-bits PWM output, and selectable PWM

clock frequency

! Row-to-Row spacing to maintain constant display

height

! Window alpha-blending effect

Power & Technology
! 2.5V/3.3V power supply
! 0.25�m CMOS process; 208-pin PQFP package

RTD2020

2002/11/12

Rev.1.20

2. General Description

The Realtek RTD2020 is a highly-integrated single chip IC controller solution for producing real time, top quality digital video
and computer graphic images on LCD monitor/flat panel displays, such as XGA LCD monitors. LCD monitors and flat panel
displays provide a sharp, flicker free display while saving space and energy for desktop PC applications. The RTD2020 provides
an ideal interface between industry standard digital graphics controllers and a wide variety of LCD panel devices. Flat panel
devices using the RTD2020 can support all incoming VESA modes and interface to any TFT LCD device, up to SXGA
(1280x1024) resolution.

For increased flexibility, the RTD2020 supports both analog and digital interface inputs. The embedded 8-bit triple-channel
140MHz high-quality Analog to Digital Converter (ADC) and PLL support up to a 1280x1024 75Hz RGB analog input signal.
The digital interface can support Transmission Minimized Differential Signaling (TMDS) receiver or Video-Decoder or DVO
digital output signals up to 160MHz.

The RTD2020 features an embedded On-Screen Display (OSD) engine. This OSD enables either character based or bit map based
menu display. Through this menu, display parameters, such as brightness and contrast, can be controlled, and information on
resolution and frequency, can be displayed. The embedded display pattern generator is a function for panel testing.

Processing 24-bit RGB or 16-bit YUV input data streams, and conversion of input VGA signals to high resolution output, the RTD2020
implements a sophisticated scaling algorithm. This feature allows the RTD2020 to perform horizontal and vertical interpolation or
replication and up & down image scaling, based on programmable parameters, to create images of the highest quality.

The built-in advanced filtering engine enables independent vertical and horizontal zoom/shrink, and, through enhancement of
individual pixels, enhances image sharpness, and provides superb visual quality. This allows appropriate sized display of crisp,
sharp text and smooth, clear graphics, taking full advantage of LCD flat panel technology.

Also featured are enhanced color processing functions, including gamma correction and dithering logic. Brightness, contrast and
gamma correction can be programmed through the internal gamma correction lookup tables. Full control of output panel data is
obtained by color mapping input RGB data. The 8-bit/color pixel path offers up to 16.7 million color support for 24-bit TFT LCD
panels. 18-bit LCD panels are also supported through spatial and temporal dither algorithms.

Increased integration in the RTD2020 includes components such as an 8032 compatible micro controller, and DDC RAM to
provide monitor information the PC through the DDC1/DDC2B protocol. Internal System Programming (ISP) is accomplished
through the DDC serial bus, supporting enhanced DDC-communication from PC to monitor, such as DDC/CI is also supported.

Finally, the Timing-Controller (TCON) generates the control signals for LCD-panel rather than LCD-monitor, and the embedded
spread-spectrum technology reduces EMI effects.

All these features make the RTD2020 is the optimum solution for superior-quality image display.

RTD2020

2002/11/12

Rev.1.20

3. Block Diagram

Video

Decoder

48D

IIC

EEPROM

24.576MHz

Key-In

RTD2020

Flat Panel Display

48D

TCON

48D

TMDS

Receiver

LCD Panel

Row/Column

Driver

TTL Signal
LCD Panel

TMDS/LVDS

LCD Panel

Program ROM

(64KB~128KB)

Addr

Data

Ctrl

16D

R/G/B

NTSC

PAL

Rx0~2

RxC

IIC

Application System Block Diagram

Sync

Processor

FIFO

Color

Conversion

Scaling Up

Color

Processing

OSD

MUX

PLL

Onchip

MCU

24.576MHz

Flat Panel Display -- RTD2020

Panel

HS & VS

Analog
RGB

Triple-ADC

Control

Build-In

OSD

Timing

Control

Panel
Driver

Digital
RGB/YUV

Chip Functional Block Diagram

Built-In

OSD

RTD2020

2002/11/12

Rev.1.20

4. Pin Assignments

T0#/P3.4/SCSB T1#/P3.5/SCLK

INT1#/P3.1/IRQ#

Realtek

RTD2020

208 207 206 205 204 203 202 201 200 199 198 197 196 195 194 193

DBGRN0

GNDIK

DBBLU7

DBBLU6

DBBLU5

DBBLU4

DBBLU3

GNDO

DBBLU2

VCC3IO

DBBLU1

DBBLU0

P2.5/TCON16

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

53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

DAGRN4

DBGRN1

DBGRN2

VCCK

DBGRN3

VCC3IO

DBGRN4

GNDO

DBGRN5

DBGRN6

DBGRN7

DBRED0

DBRED1

DBRED2

GNDIK

DBRED3

VCCK

DBRED4

DBRED5

VCC3IO

DBRED6

GNDO

DBRED7

REFCLK/OCLK

DABLU0

DABLU1

DABLU2

DABLU3

VCCK

DABLU4

DABLU5

GNDIK

DABLU6

VCC3IO

DABLU7

GNDO

DAGRN0

DAGRN1

DAGRN2

DAGRN3

DAGRN5 DAGRN6

GNDO

DAGRN7 DARED0 DARED1 VCC3IO DARED2

GNDIK

DARED3

VCCK

DARED4 DARED5 DARED6 DARED7

DEN/TCON4

VCC3IO

DCLK/ECLK

GNDO

P1.0/TCON0

VCCK

GNDIK

RESET#

PLL_TEST1

XI XO

PSEN#

ROM_DATA7

EXT#

ADC_TEST

ADC_VDD

ADC_REFIO

ADC_GND

ADC_VDD

ADC_GND

WE#/P0.4

GNDIK

VCCK

GNDO

VCC3IO

GNDO

VCC3IO

ROM_DATA6

VCC3IO

P2.4/TCON15

P1.4/TCON7

BBLU0 BBLU1 BBLU2 BBLU3 BBLU4 BBLU5 BBLU6 BBLU7 BGRN0 BGRN1

GNDIK

BGRN2 BGRN3

VCCK

BGRN4 BGRN5

BGRN6 BGRN7

BRED0 BRED1 BRED2 BRED3 BRED4 BRED5 BRED6 BRED7

GNDIK

BCLK BEN

VCCK

BVS BHS VODD PWM0 P2.7/PWM2 P2.6/PWM1 P3.3 INT0#/P3.2 DDCSCL

AVS GNDO AHS

DDCSDA

DVS/TCON5 DHS/TCON6

P1.1/TCON1 P1.2/TCON2

P1.3/TCON3

P3.6/SDI P3.7/SDO

P3.0/PWDN#

PLL_TEST2

PLL_GND

PLL_VDD

ROM_DATA5

ROM_DATA4

ROM_DATA3

ROM_DATA2

ROM_DATA1

ROM_DATA0

ROM_ADDR0

ROM_ADDR1

ROM_ADDR2

ROM_ADDR3

ROM_ADDR4

ROM_ADDR5

ROM_ADDR6

ROM_ADDR7

ROM_ADDR8

ROM_ADDR9

ROM_ADDR10

ROM_ADDR11

ROM_ADDR12

ROM_ADDR13

ROM_ADDR14

VCCK

ROM_ADDR15

ROM_ADDR_BANK

P1.5/TCON8

P1.6/TCON9

P1.7/TCON10

P2.0/TCON11

P2.1/TCON12

P2.2/TCON13

P2.3/TCON14

ADC_VDD

ADC_GND

PLL_GND

PLL_VDD

RTD2020 Pin-Out Diagram

Электронный компонент: RTD2020