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DATA SHORT
FN7770
Rev.0.00
February 11, 2011
TW9906
3x10-bit Multi-Standard Comb Filter Video Decoder with YCbCr Component Input
Intersil|Techwell’s TW9906 is a high quality
NTSC/PAL,/SECAM multi-standard video decoder plus YCbCr
component inputs designed for multimedia applications.
TW9906 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 three 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.
• Programmable hue, brightness, saturation, contrast, and
sharpness
• Blue stretch
• 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.
Video Output
• Support both free-running and line-locked clock outputs
• Programmable output cropping
• High quality horizontal filtered scaling with arbitrary scale
down ratio
• VMI 1.4 compatible 10-bit or 20-bit pixel 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
• 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 analog inputs allows any of the
following combinations:
- Up to five composite video inputs
- Four composite, one S-video or one YCbCr input.
- Two composite, two S-Video or two YCbCr inputs.
- Three composite, one S-Video and one YCbCr input.
•
Three 10-bit ADCs with clamping circuit and anti-aliasing
filter.
•
Fully programmable static or automatic gain control for the
Y channel
•
Programmable white peak control for the Y channel
•
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
Miscellaneous
• Two wire MPU serial bus interface
• Power-down mode
• Typical power consumption 0.25W
• 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
FN7770 Rev.0.00
February 11, 2011
Page 1 of 2
TW9906
CHROMA
DEMODULATION
V
ANALOG VIDEO IN
ANTI-ALIAS
FILTER
CIN (0)
MUX
CIN (1)
CLAMP
10-BIT
ADC
FILTER
U
FILTER
Y
4-H ADAPTIVE
COMB FILTER
Y/C SEPARATION
LUMA/CHROMA
PROCESSOR
CLAMP
FILTER
10-BIT
ADC
MUX
VIN (0)
VIN (1)/MUX4
H/V DOWN
SCALER/CROPPING
ANTALIAS
FILTER
MUX0
MUX
ANTI-ALIAS
FILTER
AGC/CLA
10-BIT
ADC
YBOUT
VD (19:0)
MPOUT
VIDEO OUTPUT INTERFACE
MUX3
VSYNC
HSYNC
FIELD
DVALID
SYNC
LINE LOCK
CLOCK
GENERATOR
VBI PASS
THROUGH
CLKX2
CLKX1
PDN
INTREQ
27MHz
CLOCK
VBI SLICER
VBI FIFO
SIADO
SCLK
SDAT
2-WIRE
SERIAL
BUS
AMXCLK
AUDIO CLOCK
AMCLK
ASCLK
ALRCLK
FIGURE 1. TW9906 BLOCK DIAGRAM
© Copyright Intersil Americas LLC 2011. All Rights Reserved.
All trademarks and registered trademarks are the property of their respective owners.
For additional products, see
www.intersil.com/en/products.html
Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted
in the quality certifications found at
www.intersil.com/en/support/qualandreliability.html
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
FN7770 Rev.0.00
February 11, 2011
Page 2 of 2
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