TVP5150A

具有强大可靠的同步检测器的超低功耗 NTSC/PAL/SECAM 视频解码器

The device is an ultralow power NTSC/PAL/SECAM video decoder. Available in a space saving 32-pin TQFP package, the TVP5150A decoder converts NTSC, PAL, and SECAM video signals to 8-bit ITU-R BT.656 format. Discrete syncs are also available. The optimized architecture of the TVP5150A decoder allows for ultralow-power consumption. The decoder consumes 115 mW of power in typical operation and consumes less than 1 mW in power-down mode, considerably increasing battery life in portable applications. The decoder uses just one crystal for all supported standards. The TVP5150A decoder can be programmed using an I2C serial interface. The decoder uses a 1.8-V supply for its analog and digital supplies, and a 3.3-V supply for its I/O.

The TVP5150A decoder converts baseband analog video into digital YCbCr 4:2:2 component video. Composite and S-video inputs are supported. The TVP5150A decoder includes one 9-bit analog-to-digital converter ADC with 2x sampling. Sampling is ITU-R BT.601 27.0 MHz, generated from the 14.31818-MHz crystal or oscillator input and is line-locked. The output formats can be 8-bit 4:2:2 or 8-bit ITU-R BT.656 with embedded synchronization.

The TVP5150A decoder utilizes Texas Instruments patented technology for locking to weak, noisy, or unstable signals. A Genlock/real-time control RTC output is generated for synchronizing downstream video encoders.

Complementary 4-line adaptive comb filtering is available for both the luma and chroma data paths to reduce both cross-luma and cross-chroma artifacts; a chroma trap filter is also available.

Video characteristics including hue, contrast, brightness, saturation, and sharpness may be programmed using the industry standard I2C serial interface. The TVP5150A decoder generates synchronization, blanking, lock, and clock signals in addition to digital video outputs. The TVP5150A decoder includes methods for advanced vertical blanking interval VBI data retrieval. The VBI data processor slices, parses, and performs error checking on teletext, closed caption, and other data in several formats.

The TVP5150A decoder detects copy-protected input signals according to the Macrovision™ standard and detects Type 1, 2, 3, and colorstripe pulses.

The main blocks of the TVP5150A decoder include:

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Robust sync detector

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ADC with analog processor

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Y/C separation using 4-line adaptive comb filter

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Chrominance processor

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Luminance processor

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Video clock/timing processor and power-down control

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Output formatter

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I2C interface

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VBI data processor

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Macrovision™ detection for composite and S-video

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Accepts NTSC M, 4.43, PAL B, D, G, H, I, M, N, and SECAM B, D, G, K, K1, L video data

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Supports ITU-R BT.601 standard sampling

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High-speed 9-bit ADC

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Two composite inputs or one S-video input

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Fully differential CMOS analog preprocessing channels with clamping and automatic gain control AGC for best signal-to-noise S/N performance

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Ultralow power consumption: 115 mW typical

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32-pin TQFP package

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Power-down mode: <1 mW

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Brightness, contrast, saturation, hue, and sharpness control through I2C

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Complementary 4-line 3-H delay adaptive comb filters for both cross-luminance and cross-chrominance noise reduction

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Patented architecture for locking to weak, noisy, or unstable signals

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Single 14.31818-MHz crystal for all standards

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Internal phase-locked loop PLL for line-locked clock and sampling

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Subcarrier Genlock output for synchronizing color subcarrier of external encoder

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Standard programmable video output format:

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ITU-R BT.656, 8-bit 4:2:2 with embedded syncs

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8-bit 4:2:2 with discrete syncs

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Macrovision™ copy protection detection

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Advanced programmable video output formats:

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2x oversampled raw VBI data during active video

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Sliced VBI data during horizontal blanking or active video

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VBI modes supported

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Teletext NABTS, WST

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Closed-caption decode with FIFO, and extended data services EDS

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Wide screen signaling, video program system, CGMS, vertical interval tme code

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Gemstar 1x/2x electronic program guide compatible mode

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Custom configuration mode that allows the user to program the slice engine for unique VBI data signals

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Power-on reset

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Applications:

The following is a partial list of suggested applications:

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Digital television

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PDA

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Notebook PCs

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Cell phones

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Video recorder/players

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Internet appliances/web pads

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Handheld games

Macrovision is a trademark of Macrovision Corporation.

Other trademarks are the property of their respective owners.