TW2834 Datasheet, PDF (1/2 Pages) Intersil Corporation – 4-Channel Video QUAD/MUX Controller for Security Applications

NOT RECOMMENDED FOR NEW DESIGNS
RECOMMENDED REPLACEMENT PART
TW2837
To request the full datasheet, please visit www.intersil.com/products/TW2834
4-Channel Video QUAD/MUX Controller for
Security Applications
TW2834
The TW2834 has four high quality NTSC/PAL video
decoders, dual color display controllers and dual
video encoders. The TW2834 contains four built-in
analog anti-aliasing filters, four 10-bit
analog-to-digital converters, proprietary digital
gain/clamp controller, high quality Y/C separator to
reduce cross-noise and high performance free
scaler. Four built-in motion and blind detectors can
increase the feature of the security system. The
TW2834 has a flexible video display controller
including basic QUAD and MUX functions. The
TW2834 also has an excellent graphic overlay
function that displays character/bitmap for OSD,
single box, 2D array box and mouse pointer. The
built-in channel ID CODEC allows auto decoding and
displaying during playback and the additional scaler
on the playback supports multicropping function of
the same field or frame image. The TW2834
contains two video encoders with four 10-bit
digital-to-analog converters for providing 2
composite or S-video. The TW2834 also can be
extended up to 8-/16-channel video controller using
chip-to-chip cascade connection.
Applications
 Analog QUAD/MUX system
 4-/8-/16-channel DVR system
 Car rear vision system
 Hair shop system
 Dental care system
Features
Four Video Decoders
 Accepts all NTSC/PAL standard formats with
auto detection
 Integrated four analog anti-aliasing filters and
four 10-bit CMOS ADCs
 High performance adaptive comb filters for all
NTSC/PAL standards
 IF compensation filter for improvement of color
demodulation
 PAL delay lines for correcting PAL phase errors
 Programmable hue, saturation, contrast,
brightness and sharpness
 High performance horizontal and vertical scaler
for each path including playback input
 Fast video locking system for non-realtime
applications
 Four built-in motion detectors with 16x12 cells
and blind detectors
 Additional digital input for playback with ITU-R
BT.656 standard
 Auto cropping/strobe for playback input with
Channel ID decoder
 Supports 4-channel full D1 record and playback
mode
Dual Video Controllers
 Full live/strobe/switch function
 Various channel attribute control
 Supports pseudo 8-channel or dual page mode
 Horizontal/vertical mirroring for each channel
 Last image capture when video-loss detected
 Auto sequence switch with 128 queues and/or
manual switch by interrupt for record path
 Channel skip in auto sequence switch for record
path when video-loss detected
 Image enhancement for zoomed or still image in
display path
February 1, 2011
FN7739.0
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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