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FN7741
Rev. 1.00
July 2, 2012
TW2836
4-Channel Video QUAD/MUX Controller
for Security Applications
The TW2836 has four high quality NTSC/PAL
video decoders, dual color display controllers
and dual video encoders. The TW2836 contains
four built-in analog anti-aliasing filters, four 10 bit
Analog-to-Digital converters,
separator
to
reduce
and proprietary
and
high
digital gain/clamp controller, high quality Y/C
cross-noise
performance free scaler. Four built-in motion,
blind and night detectors can increase the
security system feature. The TW2836 has
flexible video display/record/playback controller,
including basic display and MUX functions. The
TW2836 also has an excellent graphic overlay
function that displays 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 multi-cropping
function of the same field or frame image. The
TW2836 contains two video encoders with three
10 bit Digital-to-Analog converters to provide 2
composite or S-video. The TW2836 can be
extended up to 8/16 channel video controller
using chip-to-chip cascade connection.
Color Transient Improvement (CTI)
Automatic white peak control
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
application
Four built-in motion detectors with 16X12 cells
and blind and night detectors
Additional digital input for playback with ITU-R
BT.656 standard
Auto cropping / strobe for playback input with
Channel ID decoder
Supports four channel full D1 record mode
Dual Video Controllers
Supports full triplex function with 4ch live,
4ch playback display and 4ch record output
Analog/Digital channel ID CODEC for record
and playback application
Supports adaptive median filter for Record
Supports pseudo 8 channel and/or dual
page mode
Horizontal/Vertical mirroring for each
channel
Last image captured 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
Features
Four Video Decoders
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
FN7741 Rev. 1.00
July 2, 2012
Page 1 of 240
TW2836
High performance 2X zoom to horizontal
Extendable up to 8/16 channel video
controller using cascade connection
Quad MUX switch with 32 queues and/or
manual control by interrupt for record path
64 color bitmap OSD overlay with 720x480
in NTSC / 720x588 resolution in PAL
Four programmable single boxes and four
2D arrayed boxes overlay
Mouse pointer overlay
Dual Video Encoders
Dual path digital outputs with ITU-R BT.656
standard
Dual path analog outputs with all analog
NTSC/PAL standards
Programmable bandwidth of luminance and
chrominance signal for each path
Three 10 bit video CMOS DACs
and vertical direction for display path
Applications
Analog QUAD/MUX System
4/8/16 Channel DVR System
Car Rear Vision System
Hair Shop System
Dental Care System
FN7741 Rev. 1.00
July 2, 2012
Page 2 of 240
TW2836
Block Diagram
8x8
Matrix
MUX
VIN0A
VIN0B
Motion Detect
Dual Scaler
Motion Detect
Dual Scaler
4x4
Matrix
Video
Decoder
Dual Scaler
Display
Path
Process
Video
Encoder I
DAC
MUX
VIN1A
ADC
VIN1B
VIN2A
ADC
Video
Decoder
Write/
Read
Control
DAC
VIN2B
Motion Detect
Dual Scaler
Motion Detect
VIN3A
ADC
MUX
VIN3B
MUX
Video
Decoder
Clock Generator
MPP Interface
HOST Interface
IRQ Interface
DAC
July 2, 2012
ADDR/BA/RASB/CASB/WENB/DQM/DATA
Channel ID
Decoder
Encoder
Timing
Interface
Playback
Path Control
PBCLK
PBIN
ITU-R
BT656
Decoder
Auto-Crop &
Multi-Scaler
HSENC
VSENC
FLDENC
HLINKI
VLINKI
DLINKI
VAOYX
ADC
FN7741 Rev. 1.00
VAOCX
VDOX
VDOY
ITU-R
BT656
Encoder
Video
Decoder
Record
Path
Process
Video
Encoder II
VAOYY
CLKMPP1
CLKMPP2
CLKVDOX
CLKVDOY
DLINKI/MPP1/2 HSPB/HCSB0/HCSB1/HALE/HRDB/HWRB/HDAT
IRQ
CLK54I
Page 3 of 240
TW2836
Ordering Information
PART
NUMBER
TW2836-BA1-GR (Note 1)
TW2836-PA1-GE (Note 2)
NOTE:
PART
MARKING
TW2836 DABA1-GR
TW2836 DAPA1-GE
256 Ld LBGA
208 Ld PQFP
PACKAGE
(Pb-free)
1.
These Intersil Pb-free WLCSP and BGA packaged products employ special Pb-free material sets; molding
compounds/die attach materials and SnAgCu - e1 solder ball terminals, which are RoHS compliant and
compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free WLCSP and BGA packaged
products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free
requirements of IPC/JEDEC J STD-020.
2.
These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding
compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is
RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products
are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of
IPC/JEDEC J STD-020.
FN7741 Rev. 1.00
July 2, 2012
Page 4 of 240
TW2836
Table of Contents
Pin Descriptions ............................................................................................................................. 8
Pin Diagram ................................................................................................................................. 14
Functional Description ..................................................................................................................... 16
Video Input .................................................................................................................................. 16
Analog Video Input.................................................................................................................... 18
Anti-aliasing Filter ................................................................................................................. 19
Analog-to-Digital Converter .................................................................................................. 19
Sync Processing ..................................................................................................................... 20
Color Decoding ...................................................................................................................... 21
Luminance Processing ............................................................................................................ 23
Chrominance Processing ........................................................................................................ 24
Realtime Record Mode ........................................................................................................... 25
Digital Video Input .................................................................................................................... 26
Digital Video Input Format .................................................................................................... 26
Channel ID Decoder ............................................................................................................... 27
Cropping and Scaling Function .................................................................................................. 29
Cropping Function for Live .................................................................................................... 29
Scaling Function for Live ....................................................................................................... 30
Cropping and Scaling Function for Playback ......................................................................... 34
Motion Detection .......................................................................................................................... 36
Mask and Detection Region Selection ........................................................................................ 37
Sensitivity Control ..................................................................................................................... 38
Level Sensitivity .................................................................................................................... 38
Spatial Sensitivity .................................................................................................................. 38
Temporal Sensitivity .............................................................................................................. 38
Velocity Control ........................................................................................................................ 39
Blind Detection .......................................................................................................................... 41
Night Detection .......................................................................................................................... 41
Video Control ............................................................................................................................... 42
Channel Input Selection ............................................................................................................. 43
Channel Operation Mode ........................................................................................................... 44
Live Mode .............................................................................................................................. 44
Strobe Mode ........................................................................................................................... 45
Switch Mode .......................................................................................................................... 47
Channel Attribute ....................................................................................................................... 51
Background Control ............................................................................................................... 51
Boundary Control ................................................................................................................... 51
Blank Control ......................................................................................................................... 51
Freeze Control ........................................................................................................................ 51
FN7741 Rev. 1.00
July 2, 2012
Page 5 of 240
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