Sanyo LC74981W Specifications

Ordering number : ENN6678A

O3100TN (OT) No. 6678-1/12

Overview

The LC74981W is an LCD display scan converter IC that converts NTSC and PAL TV signals to XGA resolution. The video signal-processing circuits required to implement an LCD TV set can be easily formed by combining this IC with a digital decoder, a microcontroller, and an LCD panel. Since this IC does not require an external frame memory for resolution conversion, it can contribute to minimizing total costs. As additional functionality, it also provides inputs for personal computer video (up to XGA) and digital TV (480p/480i). Since LC74981W operation is based on expansion (resolution increasing) processing, depending on the input resolution, it can also support use of, for example, 800 × 600 and 800 × 480 dot resolution LCD panels. Thus the LC74981W can be used in a wide range of applications.

Features

•

NTSC and PAL input support: 24-bit or 16-bit digital YCbCr signal input

• PC input support: Personal computer 24-bit digital RGB signal input at resolutions up to XGA

• DTV (480i / 480p) input: 24-bit digital YCbCr input

• Progressive-scan 18-bit RGB (36 bits two-phase supported) signal output

•

YCbCr to RGB conversion

• Interlaced to progressive scan conversion

• Resolution conversion (enlargement)

• Variable display size and display position (independently settable in the horizontal and vertical directions)

• Image quality adjustments: brightness, contrast, color, sharpness, color phase, black balance, and white balance

• Built-in γ correction (LUT technique. Each 8-bit R, G, and B signal is independently programmable.)

• Dithering (8-bit to 6-bit conversion)

• Built-in OSD function (8 colors, 256 charactors)

•I2C bus interface

• Constant frame-rate processing (identical frame periods in the input and output signals) adopted so that no external memory is required.

Specifications

• Supply voltage: 3.3 V (input pins are 5 V tolerant)

• Maximum operating frequency: 65.0 MHz

• Package: SQFP208

Applications

• LCD TVs, monitors, and projectors

• PDP displays

• Car television and in-car navigation systems

Package Dimensions

unit: mm

3210-SQFP208

LC74981W

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

LCD TV Scan Converter IC

CMOS IC

Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft’s control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO products described or contained herein.

28.0

30.6

0.15

0.2

3.8max

0.5

30.6

(0.5)

(1.25)

28.0

156 105

208

104

157

(3.2)

0.35

SANYO: SQFP208

[LC74981W]

No. 6678-2/12

LC74981W

I/O Specifications

Input Signal Overview

Signal type Pin No. Pin Description Notes

6 to 13 YIN7 to 0

Y/Y/R

54 to 61 RIN7 to 0

Video signals

16 to 23 UIN7 to 0

C/Cb/G

64 to 71 GIN7 to 0 26 to 33 VIN7 to 0

–/Cr/B

74 to 81 BIN7 to 0

90 HITV NTSC/PAL horizontal sync signal 91 VITV NTSC/PAL vertical sync signal

Sync signals

92 HIDTV DTV horizontal sync signal 93 VIDTV DTV vertical sync signal 94 HIPC PC horizontal sync signal 95 VIPC PC vertical sync signal 96 BLKIH Horizontal enable

Data enable signals

97 BLKIV Vertical enable

36 CLKITV NTSC/PAL clock

Pixel clocks

39 CLKIDTV DTV clock 42 CLKIPC PC video clock

167 XTAL Display clock

• NTSC, PAL, and DTV (480i and 480p) inputs YCbCr signals conform to the CCIR 601 standard. The YC C signal is a multiplexed CbCr signal.

• PC input (up to XGA)

• Three independent systems for both horizontal and vertical sync signals

• Any input polarity may be used. The LC74981W discriminates internally.

• Positive logic (active-high) input

• A composite signal can be input to BLKIH. (BLKIV must be tied high in this case.)

• Three independent input systems

• Fixed frequency crystal oscillator (65 MHz maximum)

Output Signal Overview

Signal type Pin No. Pin Description Notes

106 to 111 ROEVEN5 to 0 Even pixels, red 114 to 119 GOEVEN5 to 0 Even pixels, green

Video signals

122 to 127 BOEVEN5 to 0 Even pixels, blue 130 to 135 ROODD5 to 0 Odd pixels, red 138 to 143 GOODD5 to 0 Odd pixels, green 146 to 151 BOODD5 to 0 Odd pixels, blue

Sync signals

162 HOUT Horizontal sync signal 163 VOUT Vertical sync signal

Data enable signals

102 BLKHOUT Horizontal enable 103 BLKVOUT Vertical enable 154 DCLK1 Single-phase clock

Pixel clocks

155 DCLK1B Single-phase clock (inverted) 158 DCLK2 Two-phase clock 159 DCLK2B Two-phase clock (inverted)

• For each RGB signal: 6 bits and 2 phases

• Also provides single-phase output (In this mode the odd pixel pins are used for output.)

• The sync period, position, and polarity can be set.

•

A composite sync signal can be output from VOUT.

• Outputs the same frequency as that of the crystal oscillator.

• The enable period and the polarity can be set.

•

A composite signal can be output from BLKVOUT.

• Outputs a frequency 1/2 that of the crystal oscillator.

Control Signal Overview

Signal type Pin No. Pin Description Notes

172 AICS Chip select

Three-wire bus 173 AIDA Data bus

174 AICK Bus clock 175 SDA Data bus

C-bus

176 SCL Bus clock

• Used for OSD control and γ correction characteristics settings.

• Used to set the internal control registers and to output internal status information.

• The slave address is “0111000+ (R/W)”.

No. 6678-3/12

LC74981W

Parameter Symbol Conditions Ratings Unit

Maximum supply voltage V

max –0.3 to +4.6 V

Input voltage V

–0.5 to + 0.5 V

Output voltage V

–0.3 to VDD+ 0.3 V Allowable power dissipation Pd max Ta = 70°C 1.6 W Storage temperature Tstg –55 to +125 °C Operating temperature Topr –30 to +70 °C

Electrical Characteristics

Absolute Maximum Ratings at VSS= 0 V

Parameter Symbol Conditions

Ratings

Unit

min typ max

Supply voltage V

3.0 3.3 3.6 V

Input voltage range V

0 — 5.5 V

Allowable Operating Ranges at Ta = –30 to +70°C

Parameter Symbol Conditions

Ratings

Unit

min typ max

Input pins C

f = 1 MHz — — 10 pF

Output pins C

OUT

f = 1 MHz — — 10 pF

Bidirectional pins C

I/O

f = 1 MHz — — 10 pF

I/O Pin Capacitances at Ta = 25°C, VDD= VI= 0 V

Note: While the standard operating temperature is –30 to +70°C, for applications such as automotive applications, it can also be used over the range –40 to

+85°C. Note, however, that the value of the allowable power dissipation differs somewhat between these two cases. Contact your Sanyo representative for details if you need to use this device with the latter (wider) operating temperature range.

Parameter Symbol Conditions

Ratings

Unit

min typ max

Input high-level voltage V

CMOS level 0.7 V

——V

CMOS level Schmitt 0.75 V

——V

Input low-level voltage V

CMOS level — — 0.2 V

CMOS level Schmitt — — 0.15 V

Input high-level current I

VI= V

–10 — +10 µA

= VDD, with pull-down resistors attached. +10 — +100 µA

Input low-level current I

VI= V

–10 — +10 µA

Type B4, I

= –2 mA VDD– 0.8 — — V

Output high-level voltage V

Type B8, IOH= –4 mA VDD– 0.8 — — V Type B12, I

= –6 mA VDD– 0.8 — — V

Type B4, I

= 2 mA — — 0.4 V

Output low-level voltage V

Type B8, IOL= 4 mA — — 0.4 V Type B12, I

= 6 mA — — 0.4 V

Output leakage current I

In the high-impedance output state –10 — +10 µA

Pull-down resistance R

35 70 140 kΩ

Quiescent current* I

Outputs open, VI= VSSor V

— — 100 µA

DC Characteristics at Ta = –30 to +70°C, VDD= 3.0 to 3.6 V

Note: * Certain of the input pins include built-in pull-down resistors. The quiescent current drain cannot be guaranteed in certain situations due to the

structure of these circuits.

No. 6678-4/12

LC74981W

Pin Assignment

DVSS

OSDRIN

OSDGIN

OSDBIN

OSDEN

YIN7

YIN6

YIN5

YIN4

YIN3

YIN2

YIN1

YIN0

DVDD

DVSS

UIN7

UIN6

UIN5

UIN4

UIN3

UIN2

UIN1

UIN0

DVDD

DVSS

VIN7

VIN6

VIN5

VIN4

VIN3

VIN2

VIN1

VIN0

DVDD

DVSS

CLKITV

DVDD

DVSS

CLKIDTV

DVDD

DVSS

CLKIPC

DVDD

SCANMOD

SCANEN

AVSS

PDO

AVDD

AVSS

VCOCNT

VCORNG

AVDD

DVDD

DCLK1B

DCLK1

DVSS

DVDD

BOODD5

BOODD4

BOODD3

BOODD2

BOODD1

BOODD0

DVSS

DVDD

GOODD5

GOODD4

GOODD3

GOODD2

GOODD1

GOODD0

DVSS

DVDD

ROODD5

ROODD4

ROODD3

ROODD2

ROODD1

ROODD0

DVSS

DVDD

BOEVEN5

BOEVEN4

BOEVEN3

BOEVEN2

BOEVEN1

BOEVEN0

DVSS

DVDD

GOEVEN5

GOEVEN4

GOEVEN3

GOEVEN2

GOEVEN1

GOEVEN0

DVSS

DVDD

ROEVEN5

ROEVEN4

ROEVEN3

ROEVEN2

ROEVEN1

ROEVEN0

DVSS

RIN7

RIN6

RIN5

RIN4

RIN3

RIN2

RIN1

RIN0

DVDD

DVSS

GIN7

GIN6

GIN5

GIN4

GIN3

GIN2

GIN1

GIN0

DVDD

DVSS

BIN7

BIN6

BIN5

BIN4

BIN3

BIN2

BIN1

BIN0

DVDD

DVSS

CLPP

CLPY

CLPCB

CLPCR

DVDD

DVSS

HITV

VITV

HIDTV

VIDTV

HIPC

VIPC

BLKIH

BLKIV

PLLH

DVDD

DVSS

RST

BLKHOUT

BLKVOUT

DVDD

TSTSUB0

TSTSUB1

TSTSUB2

TSTSUB3

TSTMOD0

TSTMOD1

TSTMOD2

TSTMOD3

TSTOB0

TSTOB1

TSTOB2

TSTOB3

TSTOB4

TSTOB5

TSTOB6

TSTOB7

DVSS

DVDD

TSTOA0

TSTOA1

TSTOA2

TSTOA3

TSTOA4

TSTOA5

TSTOA6

TSTOA7

DVSS

DVDD

CLKIO

PDOWN2

PDOWN1

SCL

SDA

AICK

AIDA

AICS

MUTE

EXCTR

DVSS

DVDD

XTAL

DVSS

DVDD

VIRST

VOUT

HOUT

DVSS

DVDD

DCLK2B

DCLK2

DVSS

104

105156

157

208

10 15 20 25 30 35 40 45 50

Top view

100

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A13540

LC74981W

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