TW9909
NOT RECOMMENDED FOR NEW DESIGNS
NO RECOMMENDED REPLACEMENT
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the full datasheet, please visit
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DATA SHORT
FN7772
Rev.0.00
Feb 11, 2011
5x10-Bit Multi-Standard 3D Comb Filter Video Processor with SCART and RGB
Mixing Support
Techwell’s
TW9909
is a high performance NTSC/PAL/SECAM
multi-standard 10-bit video decoder plus SCART/YCbCr
component inputs and analog RGB overlay support designed
for multimedia applications.
TW9909 uses the mixed-signal 2.5V/3.3V CMOS technology to
provide a low-cost and low-power integrated solution.
Minimum external components are required due to its
integrated analog front-end containing anti-aliasing filter, AGC,
clamping, and five 10-bit high speed ADCs. For composite
inputs, an adaptive comb filter and luma/chroma processing
produce exceptionally high quality pictures using proprietary
techniques. A high quality internal scaling engine offers
arbitrarily filtered down scaling of the output video. Its VBI
capability is enhanced with built-in VBI slicer, filter, FIFO and
VBI data pass-through function to support common data
services.
Video Output
• Support both free-running and line-locked clock outputs
• Programmable output cropping
• High quality horizontal filtered scaling with arbitrary scale
down ratio
• 10-bit or 20-bit output interface
• ITU-R 601 or ITU-R 656 compatible output YCbCr(4:2:2)
output format
• VBI slicer supporting industrial standard data services with
data packet filter capability
• Built-in VBI FIFO for convenient access through host
interface
• VBI data pass through, raw ADC data for Intercast™
• Field locked audio clock generator
Features
The main features of the TW9909 are
• NTSC (M, 4.43) and PAL (B, D, G, H, I, M, N, N combination),
PAL (60), SECAM support with automatic format detection
• Advanced synchronization processing for VCR trick mode
and weak signal
• Software selectable 14 analog input terminals allow
maximum flexibility:
• Up to five composite, or two S-Video or two YCbCr inputs
• Up to two SCART RGB inputs with FB.
• Five 10-bit ADCs with clamping circuit and anti-aliasing filter
built-in
• Fully programmable static or automatic gain control for the
Y and G(Y) channel
• Programmable white peak control for the Y channel
• High quality analog RGB/YCbCr mixing by Fast Blanking
signal
• Adaptive 4H comb filter for the best image quality
• PAL delay line for color phase error correction
• Digital sub-carrier PLL for accurate color decoding
• Digital Horizontal PLL and advanced synchronization
processing for non-standard video signals
• Programmable hue, brightness, saturation, contrast, and
sharpness
• Blue stretch function
• Image enhancement with 2D peaking and CTI.
• Automatic color control and color killer
• IF compensation filter
• Detection of level of copy protection according to
Macrovision standard
• YCbCr input supports 480i/576i and sub-sampled
480p/576p with auto-detection.
Miscellaneous
• Two wire MPU serial bus interface
• Power-down mode
• Typical power consumption 0.4W
• Single 27MHz crystal for all standards
• Supports 24.54MHz and 29.5MHz crystal for high quality
square pixel format
• 3.3V / 5V tolerant I/O
• 2.5V / 3.3V Power Supply
• 80 pin TQFP package
FN7772 Rev.0.00
Feb 11, 2011
Page 1 of 2
TW9909
RIN (0)
Cr
Anti-alias Filter
Clamp
MUXs
Filter
GIN (0)
GIN (1)
BIN (0)
BIN (1)
FB(0)
FB(1)
10-bit ADCs
Cb
Y
FB
SOFT MIXER
Color Matrix
RIN (1)
Constrast
Saturation
Brightness
Tint
Chroma
Demodulation
V
MUX
Clamp
10-bit
ADC
Anti-alias
Filter
Filte
CIN (0)
Analog Video In
CIN (1)
U
Y
Filter
YBOUT
MUX0
MUX3
4-H adaptive
comb filter
Y/C separation
AGC/Cla
10-bit
ADC
Luma/Chroma
processor
H/V Down
Scaler/Cropping
VD(19:0)
MPOUT
MUX
Anti-alias
Filter
Video output Interface
Sync
VSYNC
HSYNC
FIELD
DVALID
Line-lock
clock
Generator
VBI Pass
through
CLKX2
CLKX1
PDN
27 Mhz
Clock
VBI Slicer
VBI FIFO
SIAD0
SCLK
SDAT
INTREQ
2 Wire
Serial
Bus
AMXCLK
Audio
Clock
AMCLK
ASCLK
ALRCLK
FIGURE 1. TW9909 BLOCK DIAGRAM
© Copyright Intersil Americas LLC 2011. All Rights Reserved.
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in the quality certifications found at
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Intersil products are sold by description only. Intersil may modify the circuit design and/or specifications of products at any time without notice, provided that such
modification does not, in Intersil's sole judgment, affect the form, fit or function of the product. Accordingly, the reader is cautioned to verify that datasheets are
current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its
subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see
www.intersil.com
FN7772 Rev.0.00
Feb 11, 2011
Page 2 of 2
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