BT869KRF Ver la hoja de datos (PDF) - Conexant Systems

Número de pieza

componentes Descripción

Lista de partido

BT869KRF

Flicker-Free Video Encoder with Ultrascale™ Technology

Conexant Systems 

Bt868/Bt869

Flicker-Free Video Encoder with UltrascaleTM Technology

The Bt868/869 is specifically designed for video systems requiring the generation of

high-quality flicker-free composite and Y/C (S-video) signals from various YCrCb or

RGB digital streams. The Bt868/869 accepts any input format from 640 x 480 to

800 x 600 resolution.

The Bt868/869 uses Conexant’s UltraScale™ technology to provide the most

advanced vertical and horizontal scaling necessary for the display of non-interlaced

data on interlaced devices such as the TV. The UltraScale™ technology converts the

lines of input pixel data to the appropriate number of output lines for producing a

full-screen, high-quality image.

The Bt868/869 performs 5-line vertical filtering, which includes poly phase

interpolation scaling for overscan compensation and flicker filtering. Horizontal

scaling for overscan compensation is achieved by altering the encoder clock

frequency. This approach preserves all of the high frequency components of the

input signals, which are essential for the highest quality display of text intensive

images such as web pages on TVs. The amount of flicker filtering and overscan

compensation is programmable.

Worldwide video standards are supported, including NTSC-M (N. America,

Taiwan, Japan), PAL-B,D,G,H,I (Europe, Asia), PAL-M (Brazil), PAL-N (Uruguay,

Paraguay), and PAL-Nc (Argentina). Bt868 and Bt869 are functionally identical, with

the exception that Bt869 can output Macrovision Level 7.0 anticopy algorithm.

Functional Block Diagram

P[23:0]

HSYNC*

VSYNC*

BLANK*

FIELD

SIC

SID

ALTADDR

RESET*

SLEEP

SLAVE

PAL

XTALIN

XTALOUT

Input

DEMUX

Color Space

Conversion

Flicker

Filter/Scaler

FIFO

Timing

Serial

Interface

Internal

Reference

Video

Encoder

DAC

MUX

XTAL

OSC

PLL

Clock

Generation

BIAS

GEN

FSADJUST

COMP

VREF

DACA

DACB

DACC

VBIAS

CLKO

CLKI

Distinguishing Features

• Digital RGB or YCrCb non-interlaced

input to interlaced or non-interlaced

analog TV output modes:

YCrCb Modes:

– 16-bit 4:2:2 multiplexed 8-bit

– 24-bit 4:4:4 multiplexed 12-bit

– 24-bit 4:4:4 non-multiplexed 24-bit

RGB Modes:

– 15/16 bit 5:6:5 RGB multiplexed 8-bit

– 24-bit 8:8:8 RGB mulitplexed 12-bit

– 24-bit 8:8:8 RGB non-multiplexed

24-bit

• Digital RGB non-interlaced input to

analog RGB noninterlaced (VGA/SVGA)

output modes:

– 15/16 bit 5:6:5 RGB multiplexed 8-bit

– 24-bit 8:8:8 RGB mulitplexed 12-bit

– 24-bit 8:8:8 RGB non-multiplexed

24-bit

• Support for NTSC/PAL outputs in the

following modes:

– Interlaced and non-interlaced outputs

– S-video output (simultaneous with

composite NTSC or PAL outputs)

– Component YUV analog output mode

• 5-line vertical filtering scaling for

overscan compensation and flicker

filtering

• CCIR601 compatible input mode

• Luma and chroma comb filtering

• 3 x 10-bit DACs

• 6 MHz Luma bandwidth

• Macrovision 7.0 copy protection

• 80-pin PQFP package

• 3.3 V operation with 5 V tolerant IOs

• 2-line serial programming interface

• Power-Down modes

• Master/slave video timing operation

• TV connected register flag

• Automatic configuration

Applications

• Desktop/Portable PCs with TV-Out

• Living-room PCs

• Internet PC/TVs

• Internet Appliances

Data Sheet

100123B

September 2000

Share Link: