Description
The TMC22x91 digital video encoders convert digital computer image or graphics data (in RGB, YCBCR, or color indexed format) or a CCIR-601 signal into a standard analog baseband television (NTSC or PAL) signal with a modulated color subcarrier.

Features
• All-digital video encoding
• Internal digital oscillators, no crystals required
• Multiple input formats supported
    – 24-bit and 15-bit GBR/RGB
    – YCBCR422 or 444
    – Color indexed
• 30 overlay colors (TMC22191)
• Fully programmable timing
• Supports input pixel rates of 10 to 15 Mpps
• 256 x 8 x 3 color look-up tables (bypassable on TMC22191)
• 8-bit mask register
• 8-bit composite digital video input
• Hardware and 24-bit data keying
• Synchronizes with TMC22071 Genlocking Video Digitizer
• 8:8:8 video reconstruction
• SMPTE 170M NTSC or CCIR Report 624 PAL compatible
• Supports PAL-M and NTSC without pedestal
• Simultaneous S-VIDEO (Y/C) NTSC/PAL output
• 10-bit D/A conversion (three channels)
• Controlled edge rates
• 3 power-down modes
• Built-in color bars and modulated ramp test signals
• JTAG (IEEE Std 1149.1-1990) test interface
• Single +5V power supply
• 84 lead PLCC package
• 100 lead MQFP package