OBSOLETE PRODUCT
RECOMMENDED REPLACEMENT PARTS
TW2866C, TW2984, TW2964, TW2965
DATA SHORT
FN7747
Rev. 0.00
December 17, 2010
To request the full datasheet, please visit
www.intersil.com/products/TW2866
TW2866
4-Channel Video Decoders and Audio Codecs and
Video Encoder for Security Applications
The TW2866 includes four high quality
NTSC/PAL/SECAM video decoders that convert
analog composite video signal to digital
component YCbCr data for security applications.
Each channel contains 10-bit ADCs and
proprietary clamp and gain controllers and
utilizes 4H comb filter for separating luminance
and chrominance to reduce cross noise artifacts.
The TW2866 adopts the image enhancement
techniques such as IF compensation filter, CTI
and programmable peaking. TW2866 also
includes one NTSC/PAL video encoder with two
10-bit DACs to support CVBS and YC output. The
TW2866 also includes audio CODEC which has
five audio analog-to-digital converters and one
digital-to-analog converter. A built-in audio
controller can generate digital outputs for
recording/mixing and accepts digital input for
playback.
Provides multichannel 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
Supports a two-wire serial host interface
Integrated one video encoder and two 10-bit
video CMOS DACs
Integrated clock PLL for 108MHz clock output
Ultra low power consumption (typical
666.84mW)
128 pin LQFP package
Features
Accepts all NTSC(M/4.43) /
PAL(B/D/G/H/I/K/L/M/N/60)/SECAM
standards with auto detection
Integrated four 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)
Automatic white peak control
Programmable hue, saturation, contrast,
brightness and sharpness
Proprietary fast video locking system for
non-realtime application
Supports the standard ITU-R BT.656 format or
time multiplexed output with 54/108MHz
Provides simultaneous four channel full D1 and
CIF time-multiplexed outputs with 54MHz
Integrated five audio ADCs and one audio DAC
FN7747 Rev. 0.00
December 17, 2010
Page 1 of 2
TW2866
Block Diagram
MUX
VIN1B
AIN1
ADC
ADC
ADC
ADC
Decimation Filter
MPP
Interface
BT.656
Interface
VIN1A
4H Comb
Video Decoder
VD1[7:0]
VD2[7:0]
VD3[7:0]
VD4[7:0]
MPP1
MPP2
MPP3
MPP4
CLKPOn
XTO
XTI
CLKNOn
SCLK
SDAT
IRQ
ACLKR
ASYNR
ADATR
ADATM
ACLKP
ASYNP
ADATP
MUX
VIN2A
VIN2B
AIN2
ADC
ADC
4H Comb
Video Decoder
Decimation Filter
MUX
VIN3A
VIN3B
AIN3
ADC
ADC
4H Comb
Video Decoder
Decimation Filter
ADC
ADC
MUX
VIN4A
VIN4B
AIN4
ADC
ADC
4H Comb
Video Decoder
I2S
Interface
ADC
ADC
Decimation Filter
AIN5
ADC
Decimation Filter
AOUT
DAC
Interpolation Filter
VYOUT
DAC
Digital Video
Encoder
Host
Interface
Clock PLL
Clock
Generator
ADC
ADC
ENCLK
ED[7:0]
VCOUT
DAC
© Copyright Intersil Americas LLC 2010. All Rights Reserved.
All trademarks and registered trademarks are the property of their respective owners.
For additional products, see
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Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted
in the quality certifications found at
http://www.intersil.com/en/support/qualandreliability.html
Intersil products are sold by description only. Intersil may modify the circuit design and/or specifications of products at any time without notice,
provided that such modification does not, in Intersil's sole judgment, affect the form, fit or function of the product. Accordingly, the reader is
cautioned to verify that datasheets 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
http://www.intersil.com
FN7747 Rev. 0.00
December 17, 2010
Page 2 of 2
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