· True international support for NTSC, PAL

and SECAM output

· HDTV output capability

· Adaptive flicker filtering

· Supports resolutions from 320 x 200 to

1024 x 768

· Pin- and software-forward compatible

with the Bt868/869

d i g i t a l i n f o t a i n m e n t p r o d u c t s

Highest-Quality Video Encoder with
"Adaptive" Flicker Filtering

Conexant's CX25870/871 is specifically designed to meet TV out

system requirements for the next-generation desktop PCs,

notebook PCs, game consoles and set-top boxes. With pin- and

software-forward compatibility to the Bt868/869, manufacturers

can quickly bring to market new solutions that support adaptive

flicker filtering, ATSC High Definition Television (HDTV) output,

true international television display (NTSC, PAL and SECAM

output), and resolutions from 320 x 200 to 1024 x 768. The

CX25870/871 supports all features of the market's most popular PC

video encoder, Bt868/869, including 5-line vertical and horizontal

flicker filtering, overscan compensation and 10-bit DACs.

International Support

The CX25870/871 provides the most complete support for products

with TV out capability shipped into the U.S. and international

markets. Support for SCART and WSS 16:9 (wide screen signaling)

per EIAJ CPR-1204 and ITU-R BT.119 are now built in. The

CX25870/871 provides support of international standards including

NTSC (North America, Taiwan, Japan), PAL-B, D, G, H, I (Europe,

Asia), PAL-M (Brazil), PAL-N (Paraguay), PAL-Nc (Argentina), PAL-60,

SECAM-D, K, K1 (Russia), SECAM-B, G, H (Middle East) and

SECAM-L (France).

Distinguishing Features

Adaptive Flicker Filter

Video Encoder

C X 2 5 8 7 0 / 8 7 1

d i g i t a l i n f o t a i n m e n t p r o d u c t s

HDTV Output Mode

HDTV is the wave of the future. Consumers are

beginning to purchase their first HDTV sets. With the

start of this television set transition, TV out capability

must now include the ability to connect and display

PC, set-top box and game console content on these

new HDTV television sets.

The CX25870/871 provides an HDTV output capability

which generates either the analog RGB or analog

component video output necessary for driving

a HDTV's high definition input port. While the

CX25870/871 is in HDTV output mode, the device will

provide either analog RGB or analog YP

signals and

automatically insert tri-level synchronization pulses (when

necessary) and vertical synchronizing "broad pulses".

The CX25870/871 is compliant with EIA770-3, SMPTE

274M/293M/296M and supports ATSC HDTV resolutions

including 480p, 720p and 1080i.

Adaptive Flicker Filtering

The CX25870/871 provides Conexant's unique adaptive

flicker filtering capability. This feature gives new

meaning to the words "end-user ease of use" by

providing the ability to automatically determine the

optimal amount of flicker filtering for a given application.

Now, consumers do not have to manually adjust the

CX25870/871 architecture block diagram

Adaptive Flicker Filter

Video Encoder

C X 2 5 8 7 0 / 8 7 1

amount of flicker filtering as they switch from applications requiring

significant flicker filtering (e.g. text intensive applications like an

Excel spreadsheet) to those requiring little or no flicker filtering

(e.g. a DVD movie). The CX25870/871 does this automatically,

even when two applications are being run simultaneously that

require different amounts of flicker filtering. The CX25870/871

adjusts the flicker filtering of the given content on a pixel-by-pixel

basis to bring the user's viewing experience to a whole new level.

Pixel Input Formats and Timing

The CX25870/871 converts a wide range of input formats to

television video formats. The input resolution can be non-interlaced

with an active resolution of 320 x 200 to 1024 x 768 or interlaced

such as CCIR601, CCIR656 and VESA VIP.

Auto Configuration Modes

The CX25870/871 offers enhanced auto configuration mode

functionality. A total of 48 different modes are now available which

provide pre-programmed register settings for at least 95% of

typical TV out settings. For example, PAL-M can be autoconfigured

to an input resolution of 640 x 480 RGB with a moderate amount of

overscan compensation with just a single register write.

The CX25870/871 full-register readback capability has been added

to provide a real time-to-market advantage for manufacturers as

they develop new products.

What is a PC Video Encoder?

A PC video encoder allows PC users to enjoy the "big screen

experience" on their PCs. This means that instead of being

hunched over a small VGA screen when playing games or

watching DVD movies, PC users can now experience exciting

3D games with the involvement and full-visual impact that

only a big screen television can provide. The PC encoder is

a highly-sophisticated chip that converts the high-resolution

progressive scan 2D/3D VGA image generated by a PC's

graphics subsystem into a format that can be displayed on

an interlaced television. This conversion should include

"flicker filtering" because if you were to directly display a

VGA image on a TV set, the image would "flicker" due to

the reduced resolution of the TV set compared to a VGA

monitor. Only the Conexant family of 5-line vertical and

horizontal flicker filter and adaptive flicker filter PC video

encoders provide the crisp video quality that allows the

family PC to be at the center of home entertainment

and productivity.

www.conexant.com

Further Information

literature@conexant.com

(800) 854-8099 (North America)

(949) 483-6996 (International)

Order # 100431B

00-0969

Digital Infotainment

Printed in USA

World Headquarters

Conexant Systems, Inc.

4311 Jamboree Road

Newport Beach, CA
92660-3007

Phone: (949) 483-4600

Fax 1: (949) 483-4078

Fax 2: (949) 483-4391

Americas

U.S. Northwest Santa Clara

Phone: (408) 249 -9696

Fax: (408) 249 -7113

U.S. Southwest Los Angeles

Phone: (805) 376 -0559

Fax: (805) 376 - 8180

U.S. Southwest Newport Beach

Phone: (949) 483-9119

Fax: (949) 483-9090

U.S. San Diego

Phone: (858) 713-4730

Fax: (858) 713-4008

U.S. North Central Illinois

Phone: (630) 773-3454

Fax: (630) 773 -3907

U.S. South Central/Mexico
Texas

Phone: (972) 871-1920

Fax: (972) 871- 8910

U.S. Northeast Massachusetts

Phone: (978) 367-3200

Fax: (978) 256 - 6868

U.S. Carolinas North Carolina

Phone: (919) 858 -9110

Fax: (919) 858 - 8669

U.S. Southeast/South America
Florida

Phone: (727) 799 - 8406

Fax: (727) 799 - 8306

U.S. Mid-Atlantic Pennsylvania

Phone: (215) 244- 6784

Fax: (215) 244- 9292

Canada Ontario

Phone: (613) 271-2358

Fax: (613) 271-2359

Europe

Europe Central Germany

Phone: +49 89 829 -1320

Fax: +49 89 834-2734

Europe North England

Phone: +44 1344 486444

Fax: +44 1344 486555

Europe Israel/Greece

Phone: +972 9 9524000

Fax: +972 9 9573732

Europe South France

Phone: +33 1 41 44 36 51

Fax: +33 1 41 44 36 90

Europe Mediterranean Italy

Phone: +39 02 93179911

Fax: +39 02 93179913

Europe Sweden

Phone: +46 (0) 8 5091 4319

Fax: +46 (0) 8 590 041 10

Europe Finland

Phone: +358 (0) 9 85 666 435

Fax: +358 (0) 9 85 666 220

Asia Pacific

Taiwan

Phone: (886 -2) 2-720-0282

Fax: (886 -2) 2-757- 6760

Australia

Phone: (61-2) 9869 4088

Fax: (61-2) 9869 4077

China Central

Phone: 86 -21- 6361-2515

Fax: 86 -21- 6361-2516

China South

Phone: (852) 2 827- 0181

Fax: (852) 2 827- 6488

China South (Satellite)

Phone: (86) 755 -5182495

Fax: (86 ) 755 -5183024

China North

Phone: (86 -10) 8529 - 9777

Fax: (86 -10) 8529 - 9778

India

Phone: (91-11) 692-4789

Fax: (91-11) 692 -4712

Korea

Phone: (82-2) 565-2880

Fax: (82-2) 565-1440

Korea (Satellite)

Phone: (82-53) 745-2880

Fax: (82-53) 745-1440

Singapore

Phone: (65) 737 7355

Fax: (65) 737 9077

Japan

Phone: (81-3) 5371 1520

Fax: (81-3) 5371 1501

f e a t u r e s a n d s p e c i f i c a t i o n s

Product Features

· Adaptive flicker filtering for enhanced image

and text sharpness

· Supports any input resolution from 320 x 200

to 1024 x 768

· 48 automatic configuration modes

· Programmable power management

· Pin- and software-forward compatibility with

the Bt868/869

· SCART support (R/G/B, 4th DAC=CVBS)

· Up to 5-line vertical and horizontal flicker

filtering

· WSS 16:9 (wide screen signaling) support

· Macrovision 7.1.L1 protection with

the CX25871

· 10-bit DACs for superior picture quality

· Wide selection of overscan compensation ratios

· Serial programming interface

· Buffered crystal clock output

· NTSC/PAL/SECAM TV outputs:

Interlaced or non-interlaced

Composite

S-video(Y/C)

Simultaneous S-video and Composite

YUV

· YCrCb non-interlaced input to interlaced output

16-bit 4:2:2 multiplexed 8-bit input

24-bit 4:4:4 multiplexed 12-bit input

24-bit 4:4:4 non-multiplexed 24-bit input

Alternate 24-bit 4:4:4 non-multiplexed

24-bit input

· RGB non-interlaced input to interlaced output

15/16-bit multiplexed 8-bit input

24-bit multiplexed 12-bit input

16-bit non-multiplexed 16-bit input

24-bit non-multiplexed 24-bit input

Alternate 24-bit non-multiplexed 24-bit input

· RGB non-interlaced input to RGB

non-interlaced output

15/16-bit multiplexed 8-bit input

24-bit multiplexed 12-bit input

24-bit non-multiplexed 24-bit input

· RGB or YCrCb interlaced input to interlaced

output

CCIR656

CCIR601/DVD

VESA VIP

· 80-pin PQFP package

Applications

· Desktop PCs

· Graphics cards

· Notebook computers

· Game consoles

· Digital television receiver cards

· Living room PCs

· Internet PCs

· DVD players

· Set-top boxes

Conexant and the Conexant symbol are trademarks of Conexant Systems, Inc.

Master, Pseudo-Master and Slave Modes

The CX25870/871 can operate as either a timing master, pseudo-master or

slave. In master mode, the CX25870/871 will generate the CLK, HSYNC, VSYNC

and BLANK signals. In pseudo-master mode, the CX25870/871 generates the

CLK only and the graphics controller generates the HSYNC, VSYNC and BLANK

signals. In Slave mode, the CX25870/871 relies on the graphics controller to

generate all timing signals.

Macrovision

Support

The CX25871 provides Macrovision 7.1.L1 anticopy protection.

Part Number CX25870