TMC22091

www.fairchildsemi.com TMC22091/TMC22191 Digital Video Encoders/Layering Engine 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 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. Both composite (single lead) and S-VIDEO (separate chroma and luma) formats are active simultaneously at the three analog output pins, each of which generates a standard video-level signal into doubly-terminated 75Ω load. The TMC...