TW2974-LA1-CR

TW2974-LA1-CR Datasheet

TW2974 Features

Part	Datasheet
TW2974-LA1-CR	TW2974-LA1-CR (pdf)

PDF Datasheet Preview
Techwell 4-CH WD1 960H /D1 Compatible Video Decoder and Audio Codec TW2974 Features Video Decoder WD1 960H and D1 compatible video decoding operation and each channel is programmable NTSC M, and PAL B, D, G, H, I, M, N, N combination , PAL 60 support with automatic format detection Built-in analog anti-alias filter Four 10-bit ADCs and analog clamping circuit for CVBS input Fully programmable static gain or automatic gain control for the Y channel Programmable white peak control for CVBS channel 4-H adaptive comb filter Y/C separation PAL delay line for color phase error correction Image enhancement with peaking and CTI Digital sub-carrier PLL for accurate color decoding Digital Horizontal PLL for synchronization processing and pixel sampling Advanced synchronization processing and sync detection for handling non-standard and weak signal Programmable hue, brightness, saturation, contrast, sharpness Automatic color control and color killer ITU-R 656 like YCbCr 4:2:2 output or time multiplexed output with 36/72/144MHz for WD1 or 27/54/108MHz for D1 format Audio Codec Integrated five audio ADCs 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 8-bit for audio word length Programmable audio sample rate that covers popular frequencies of 8/16/32/44.1/48kHz Miscellaneous Embedded PTZ Tx pulse generation Two-wire MPU serial bus interface Integrated clock PLL for 144/108MHz clock output Power save and Power down mode Low power consumption Single 27MHz crystal for all standards and both WD1 and D1 format 3.3V tolerant I/O 1.0V/3.3V power supply 128-pin LQFP package pin compatible with TW2964 128-LQFP version 1 FN8403.1 March 13, 2013 CAUTION These devices are sensitive to electrostatic discharge follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774\|Copyright Intersil Americas LLC All Rights Reserved 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. TW2974 VIN1 AIN1 VIN2 AIN2 VIN3 AIN3 VIN4 AIN4 AIN_AUX1 AIN51 AOUT AADDCC 4H Comb Video Decoder Decimation Filter AADDCC 4H Comb Video Decoder Decimation Filter AADDCC 4H Comb Video Decoder Decimation Filter AADDCC 4H Comb Video Decoder AADDCC Decimation Filter Decimation Filter DAC Interpolation Filter FIGURE TW2974 VIDEO BLOCK DIAGRAM I2S Interface

PDF Datasheet Preview

Techwell
4-CH WD1 960H /D1 Compatible Video Decoder and Audio Codec

TW2974 Features

Video Decoder

WD1 960H and D1 compatible video decoding operation and each channel is programmable

NTSC M, and PAL B, D, G, H, I, M, N, N combination , PAL 60 support with automatic format detection

Built-in analog anti-alias filter

Four 10-bit ADCs and analog clamping circuit for CVBS input

Fully programmable static gain or automatic gain control for the Y channel

Programmable white peak control for CVBS channel
4-H adaptive comb filter Y/C separation

PAL delay line for color phase error correction

Image enhancement with peaking and CTI

Digital sub-carrier PLL for accurate color decoding

Digital Horizontal PLL for synchronization processing and pixel sampling

Advanced synchronization processing and sync detection for handling non-standard and weak signal

Programmable hue, brightness, saturation, contrast, sharpness

Automatic color control and color killer

ITU-R 656 like YCbCr 4:2:2 output or time multiplexed output with 36/72/144MHz for WD1 or 27/54/108MHz for D1 format

Audio Codec

Integrated five audio ADCs 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 8-bit for audio word length Programmable audio sample rate that covers popular frequencies of 8/16/32/44.1/48kHz

Miscellaneous

Embedded PTZ Tx pulse generation Two-wire MPU serial bus interface Integrated clock PLL for 144/108MHz clock output Power save and Power down mode Low power consumption Single 27MHz crystal for all standards and both WD1 and D1 format 3.3V tolerant I/O 1.0V/3.3V power supply 128-pin LQFP package pin compatible with TW2964 128-LQFP version
1 FN8403.1 March 13, 2013

CAUTION These devices are sensitive to electrostatic discharge follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774|Copyright Intersil Americas LLC All Rights Reserved 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.

TW2974

VIN1 AIN1 VIN2 AIN2 VIN3 AIN3 VIN4 AIN4

AIN_AUX1 AIN51 AOUT

AADDCC
4H Comb Video Decoder Decimation Filter

AADDCC
4H Comb Video Decoder Decimation Filter

AADDCC
4H Comb Video Decoder Decimation Filter

AADDCC
4H Comb Video Decoder

AADDCC Decimation Filter

Decimation Filter

DAC Interpolation Filter

FIGURE TW2974 VIDEO BLOCK DIAGRAM

I2S Interface

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Datasheet ID: TW2974-LA1-CR 639224