TVP5151中文资料超低功耗 NTSC/PAL/SECAM 视频解码器数据手册TI规格书

描述 Description

The TVP5151 device is an ultralow-power NTSC/PAL/SECAM video decoder. Available in a space-saving 48-terminal PBGA package or a 32-terminal TQFP package, the TVP5151 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 TVP5151 decoder allows for ultralow power consumption. The decoder consumes 138-mW power under typical operating conditions 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 TVP5151 decoder can be programmed using an I2C serial interface.
The TVP5151 decoder converts baseband analog video into digital YCbCr 4:2:2 component video. Composite and S-video inputs are supported. The TVP5151 decoder includes one 9-bit analog-to-digital converter (ADC) with 2× sampling. Sampling is ITU-R BT.601 (27.0 MHz, generated from the 27.000-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 TVP5151 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 four-line adaptive comb filtering is available for both the luminance and chrominance data paths to reduce both cross-luminance and cross-chrominance artifacts; a chrominance trap filter is also available.
Video characteristics including hue, brightness, saturation, and sharpness may be programmed using the industry standard I2C serial interface. The TVP5151 decoder generates synchronization, blanking, lock, and clock signals in addition to digital video outputs. The TVP5151 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 TVP5151 decoder detects copy-protected input signals according to the Macrovision™ standard and detects Type 1, 2, 3, and colorstripe processes.
The main blocks of the TVP5151 decoder include:
Robust sync detectorADC with analog processorY/C separation using four-line adaptive comb filterChrominance processorLuminance processorVideo clock/timing processor and power-down controlOutput formatterI2C interfaceVBI data processorMacrovision detection for composite and S-video

特性 Features

• Accepts NTSC (J, M, 4.43), PAL (B, D, G, H, I, M, N, Nc), and SECAM (B, D, G, K, K1, L) Video
• High-Speed 9-Bit Analog-to-Digital Converter (ADC)
• Fully Differential CMOS Analog Preprocessing Channels With Clamping and Automatic Gain Control (AGC) for Best Signal-to-Noise (S/N) Performance
• 48-Terminal PBGA Package (ZQC) or 32-Terminal TQFP Package (PBS)
• Complementary 4-Line (3-H Delay) Adaptive Comb Filters for Both Cross-Luminance and Cross-Chrominance Noise Reduction
• Single 27.000-MHz Crystal for All Standards
• Subcarrier Genlock Output for Synchronizing Color Subcarrier of External Encoder
• Standard Programmable Video Output Formats
• 8-Bit 4:2:2 With Discrete Syncs
• Advanced Programmable Video Output Formats
• Sliced VBI Data During Horizontal Blanking or Active Video
• Closed-Caption Decode With FIFO and Extended Data Services (XDS)
• Gemstar 1x/2x Electronic Program Guide Compatible Mode
• Power-On Reset
• Industrial Temperature Range (TVP5151I): –40°C to 85°C