Techwell
Low Power NTSC/PAL/SECAM Video Decoder with
VBI Slicer
TW9910
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).
Built-in analog anti-alias filter
Two 10-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
channel
4-H adaptive comb filter Y/C separation
PAL delay line for color phase error correction
Image enhancement with peaking and CTI.
Digital sub-carrier PLL for accurate color
decoding
Digital Horizontal PLL for synchronization
processing and pixel sampling
Advanced synchronization processing and sync
detection for handling non-standard and weak
signal
Programmable hue, brightness, saturation,
contrast, and sharpness.
Automatic color control and color killer
Chroma IF compensation
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 output
Video Scaler
High quality horizontal filtered scaling with
arbitrary scale down ratio
Phase accuracy better than 1/32 pixel
Programmable output cropping
Miscellaneous
Two wire MPU serial bus interface
Support Real Time Control interface
Power save and Power down mode
Typical power consumption <100mW
Single 27MHz crystal for all standards
Supports 24.54MHz and 29.5MHz crystal for
high resolution square pixel format decoding
3.3V tolerant I/O
1.8V/3.3 V power supply
44 pin LQFP, 48 pin QFN package
October 10, 2012
FN7773.1
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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