DATA SHORT
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TW9920
Analog Video Decoder/Encoder
FN7775
Rev 1.00
September 25, 2015
The
TW9920
is a multistandard video decoder and encoder chip
that is designed for multimedia applications. This low power,
integrated solution has a 4H comb filter based
NTSC/PAL/SECAM video decoder that converts analog CVBS or
S-Video signals into digital YCbCr output. The integrated analog
video encoder converts digital YCbCr inputs into analog CVBS or
S-Video output.
Video Scaler
• High quality horizontal filtered scaling with arbitrary scale
down ratio
• Phase accuracy better than 1/32 pixel
• Selectable antialias filter
• Vertical down scaling by line dropping
Features
Video Decoder
• NTSC (M, 4.43) and PAL (B, D, G, H, I, M, N, N combination),
PAL (60), SECAM support with automatic format detection
• Software selectable analog inputs allow any of the following
combinations, e.g., 4 CVBS or (3 CVBS and 1 Y/C)
• Two 9-bit ADCs and analog clamping circuit
• Fully programmable static gain or automatic gain control for
the Y channel
• Programmable white peak control for the Y or CVBS channel
• 4-H adaptive comb filter Y/C separation
• PAL delay line for color phase error correction
• Image enhancement with 2D peaking and CTI
• Digital subcarrier PLL for accurate color decoding
• Digital horizontal PLL for synchronization processing and
pixel sampling
• Advanced synchronization processing and sync detection for
handling nonstandard and weak signal
• Programmable hue, brightness, saturation, contrast,
sharpness, Gamma control, and noise suppression
• Automatic color control and color killer
• Detection of level of copy protection according to
Macrovision standard
• Programmable output cropping
• ITU-R 601 or ITU-R 656 compatible YCbCr(4:2:2) output
format
• VBI slicer supporting industrial standard data services
• VBI data pass through, raw ADC data for Intercast™
Video Encoder
• Support NTSC/PAL and its substandard format output
• ITU-R 656 compatible video interface
• Luminance and chrominance filter
• Stable 27MHz crystal clock for subcarrier generation
• Five 10-bit digital-to-analog converters at 27MHz sample
rate for generating CVBS or Y/C and YCbCr simultaneously
Miscellaneous
• Two-wire MPU serial bus interface
• Power-down mode
• Field locked audio clock generation
• Typical power consumption 0.62W
• Single 27MHz crystal for all standards
• Supports 24.54MHz and 29.5MHz crystal for high resolution
square pixel format decoding
• 3V tolerant I/O
• 2.5/3.3V power supply
• VFBGA package
FN7775 Rev 1.00
September 25, 2015
Page 1 of 2
TW9920
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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
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otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see
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FN7775 Rev 1.00
September 25, 2015
Page 2 of 2
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