4-Channel Video Decoders and Audio Codecs
and Video Encoder for Security Application
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 ADC and
proprietary clamp and gain controllers and
utilizes 4H comb filter for separating luminance
& 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 DAC‟s 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
Integrated five audio ADCs and one audio DAC
Provides multi-channel audio mixed analog
Supports I2S/DSP Master/Slave interface for
record output and playback input
PCM 8/16 bit and u-Law/A-Law 8bit for audio
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 two10 bit
video CMOS DACs.
Integrated clock PLL for 108MHz clock output.
Ultra low power consumption (Typical
128 pin LQFP package
Accepts all NTSC(M/4.43) /
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
Color Transient Improvement (CTI)
Automatic white peak control
Programmable hue, saturation, contrast,
brightness and sharpness
Proprietary fast video locking system for non-
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.
February 3, 2012
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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