TW2865-LA3-GR Datasheet, PDF (1/2 Pages) Intersil Corporation – 4-Channel Video Decoder and Audio Codec plus Video Encoder for Security Applications

Techwell
Target Applications
Embedded DVR
Video Server
DVR PCI Card
TW2865
4-Channel Video Decoder and Audio Codec plus
Video Encoder for Security Applications
The TW2865 is a 4-in-1 video decoder and audio codec plus video encoder for security surveillance applications. The device includes four high
quality NTSC/PAL/SECAM video decoders that convert analog composite video signal to digital component YCbCr data. Each channel contains a
10-bit ADC and proprietary clamp/gain controller and utilizes 4H comb filter for separating luminance & chrominance to reduce cross noise
artifacts. The TW2865 adopts image enhancement techniques such as IF compensation filter, CTI and programmable peaking. In addition,
TW2865 includes one NTSC/PAL video encoder with two 10-bit DACs to support CVBS and YC output. The TW2865 also includes an audio codec
which has five audio ADCs and one DAC. A built-in audio controller can generate digital outputs for recording/mixing and accepts digital input
for playback.
New Features
Integrated one video encoder and two 10-bit video CMOS DACs
Proprietary fast video locking system for non-realtime application
Integrated five audio ADCs and one audio DAC
Low power consumption
Typical Application Diagram
C C T V Monitor
Video In
(Ch1- 4)
Audio In
(Ch1- 4)
Mic rophone
S peaker
S-Video / CVBS
B T .6 5 6
27MHz
TW 2865
B T .6 5 6
27/54/108M H z
I2S
MUX/
CODEC
I2S
HOST
Processor
ID E
USB
Network
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