tw2868 Intersil Corporation, tw2868 Datasheet

tw2868

Manufacturer Part Number

tw2868

Description

8-channel Video Decoders And Audio Codecs And Video Encoder For Security Applications

Manufacturer

Intersil Corporation

Datasheet

1.TW2868.pdf (3 pages)

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8-Channel Video Decoders and Audio Codecs and

Video Encoder for Security Applications

TW2868

Introduction

The TW2868 includes eight high quality

NTSC/PAL/SECAM video decoders that convert

analog composite video signal to digital

component YCbCr data for security application.

Each channel contains 10 bit ADC and proprietary

clamp and gain controllers and utilizes 4H comb

filter for separating luminance & chrominance to

reduce cross noise artifacts. The TW2868 adopts

the image enhancement techniques, such as IF

compensation filter, CTI and programmable

peaking. TW2868 also includes one NTSC/PAL

video encoder with two 10 bit DAC’s to support

CVBS and YC output. The TW2868 also includes

audio CODEC, which has ten audio Analog-to-

Digital converter processing and one Digital-to-

Analog converter. A built-in audio controller can

generate digital outputs for recording/mixing and

accepts digital input for playback.

Features

FN7796.0

August 9, 2011

 Accepts all NTSC(M/4.43) /

PAL(B/D/G/H/I/K/L/M/N/60)/SECAM

standards with auto detection

 Integrated eight video analog anti-aliasing

filters and 10 bit CMOS ADCs

 High performance adaptive 4H comb filters for

all NTSC/PAL standards

 IF compensation filter for improvement of color

demodulation

 Color Transient Improvement (CTI)

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

T e c h w e l l

Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.

All other trademarks mentioned are the property of their respective owners.

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 Automatic white peak control

 Programmable hue, saturation, contrast,

brightness and sharpness

 Proprietary fast video locking system

 Supports ITU-R BT.656 type time multiplexed

output with 54/108MHz

 Provides simultaneous 2x four channel Full D1

with 108MHz and 2x CIF with 54MHz by time-

multiplexed output format

 Integrated ten audio ADC processing and one

audio DAC

 Provides multi-channel audio mixed analog

output

 Supports I2S/DSP Master/Slave interface for

record output and playback input

 PCM 8/16 bit and u-Law/A-Law 8bit for audio

word length

 Programmable audio sample rate that covers

popular frequencies of 8/16/32/44.1/48kHz

 Supports a two-wire serial host interface

 Integrated one video encoder and two10bit

video CMOS DACs.

 Integrated clock PLL for 108MHz clock output.

 Ultra low power consumption (Typical

867.36mW)

 128 pin LQFP package

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tw2868 Summary of contents

Page 1

... CTI and programmable peaking. TW2868 also includes one NTSC/PAL video encoder with two 10 bit DAC’s to support CVBS and YC output. The TW2868 also includes audio CODEC, which has ten audio Analog-to- Digital converter processing and one Digital-to- Analog converter. A built-in audio controller can generate digital outputs for recording/mixing and accepts digital input for playback ...

Page 2

... Block Diagram Video, Clock and Host Interface VIN1 VIN2 VIN3 VIN4 VIN5 VIN6 VIN7 VIN8 VYOUT VCOUT 2 TW2868 4H Comb 4H Comb ADC ADC Video Decoder Video Decoder 4H Comb 4H Comb ADC ADC Video Decoder Video Decoder 4H Comb 4H Comb ADC ADC Video Decoder Video Decoder ...

Page 3

... Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality. Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use ...

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