TVP5022

The TVP5022 is a high-quality single-chip digital video decoder that converts base-band analog NTSC and  PAL video signals into digital component video. Both composite and S-video are supported. Sampling is square-pixel or ITU-R BT.601 (13.5 MHz) and is line-locked for correct pixel alignment. The output formats can be 8-bit or 16-bit 4:2:2, 12-bit 4:1:1, or 8-bit ITU-R BT.656. The TVP5022 uses TI patented technology for locking to weak, noisy, or unstable signals. A genlock control output is generated for synchronizing downstream video encoders.

Two-line (1-H delay) 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, and saturation are programmable using one of five supported host port interfaces. The TVP5022 generates synchronization, blanking, field, lock, and clock signals in addition to digital video outputs.

The TVP5022 includes advanced vertical blanking interval (VBI) data retrieval. The VBI data processor slices, parses, and performs error checking on teletext data in several formats. A built-in FIFO stores up to 14 lines of teletext data and, with proper host port synchronization, full-field teletext retrieval is possible. The VBI data processor also retrieves closed-caption data. The main blocks of TVP5022 include:
• Analog processors and A/D converters
• Y/C separation
• Chrominance processor
• Luminance processor
• Clock/Timing processor and power-down control
• Output formatter
• Host port interface
• VBI data processor