Techwell
4-CH WD1 (960H)/D1 Compatible Video Decoder
and Audio Codec
TW2974
Features
Video Decoder
Audio Codec
WD1 (960H) and D1 compatible video decoding
operation and each channel is programmable
Integrated five audio ADCs processing and one
audio DAC
NTSC (M, 4.43) and PAL (B, D, G, H, I, M, N, N
combination), PAL (60) support with automatic
format detection
Provides multi-channel audio mixed analog output
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
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
4-H adaptive comb filter Y/C separation
Two-wire MPU serial bus interface
PAL delay line for color phase error correction
Image enhancement with peaking and CTI
Integrated clock PLL for 144/108MHz clock
output
Digital sub-carrier PLL for accurate color decoding
Power save and Power down mode
Digital Horizontal PLL for synchronization
processing and pixel sampling
Low power consumption
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
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)
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
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 2013. 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.
.
ADC
ADC
Decimation Filter
VIN2
ADC
ADC
4H Comb
Video Decoder
AIN2
ADC
ADC
Decimation Filter
VIN3
ADC
ADC
4H Comb
Video Decoder
AIN3
ADC
ADC
Decimation Filter
VIN4
ADC
ADC
4H Comb
Video Decoder
AIN4
ADC
ADC
Decimation Filter
AIN_AUX1
(AIN51)
ADC
Decimation Filter
AOUT
DAC
Interpolation Filter
BT.656
Interface
AIN1
VD1[7:0]
VD2[7:0]
VD3[7:0]
VD4[7:0]
MPP
Interface
4H Comb
Video Decoder
MPP1
MPP2
MPP3
MPP4
Clock PLL
Clock
Generator
ADC
ADC
CLKPO
XTO
XTI
CLKNO
Host
Interface
VIN1
SCLK
SDAT
IRQ
I2S
Interface
TW2974
ACLKR
ASYNR
ADATR
ADATM
ACLKP
ASYNP
ADATP
FIGURE 1. TW2974 VIDEO BLOCK DIAGRAM
For additional products, see www.intersil.com/product_tree
Intersil products are manufactured, assembled and tested utilizing ISO9000 quality systems as noted
in the quality certifications found 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; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
很抱歉,暂时无法提供与“TW2974-LA1-CR”相匹配的价格&库存,您可以联系我们找货
免费人工找货