TW2815 Datasheet, PDF (1/2 Pages) List of Unclassifed Manufacturers – 4 Channel Video Decoders and Audio Codecs For Security Applications Pin to pin compatible

Techwell
Mixed Signal Semiconductor Solutions
Security Surveillance IC Solutions
TECHWELL
SECURITY
PRELIMINARY
Features
TW2815
4 Channel Video Decoders and Audio Codecs
For Security Applications
* Pin to pin compatible with the TW2816
Target Applications
Standalone DVR
PC Based DVR
Features
Accepts all NTSC(M/N/4.43) /
PAL(B/D/G/H/I/K/L/M/N/60) 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 54MHz
Provides simultaneous four channel Full D1
and CIF time-multiplexed outputs with 54MHz
Integrated four audio ADCs and one audio
DAC^*
Provides multi-channel audio mixed analog
output *
Supports a standard I2S interface for record
output and playback input*
8/16 bit audio word length
Sample audio with 8/16KHz
Supports a two-wire serial host interface
Ultra low power consumption (Typical
500mW)
100 TQFP package
* ^{TW2815 only}
The TW2815 includes four high quality NTSC/PAL video decoders that
convert analog composite video signal to digital component YCbCr data
for security applications. The TW2815 contains four 10 bit ADC and
proprietary clamp and gain controllers and utilizes a 4H comb filter for
separating luminance & chrominance to reduce cross noise artifacts. The
TW2815 adopts the image enhancement techniques such as IF
compensation filter, CTI and programmable peaking. The TW2815 also
includes an audio CODEC which has four 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.
Block Diagram
Security
Cameras
Audio
Audio
Audio
Audio
Video
Video
Video
Video
I²S
656
TW2815
656
656
656
Video
Controller
CODEC/
DSP
HDD
Display
Internet
Tec_T^h_W^w₂₈^e15ll
Techwell
Mixed Signal Semiconductor Solutions
www.techwellinc.com