CH7202

CH7202 CHRONTEL MPEG to TV Encoder with 8-bit Input Features Outputs NTSC, PAL (B,D,G,H,I) and PAL-M (NTSCJ or PAL-60 available as options) 8-bit YCrCb (4:2:2) input format Master or slave mode operation Triple 9-bit DAC for composite and S-video output 27 MHz DAC operating frequency eliminates the need for 1/sinc(x) correction filter Low-jitter phase-locked loop circuitry operates using a low-cost 14.31818 MHz crystal 40.5 or 33.9 MHz video decoder clock output 16.934 or 11.289 MHz audio decoder clock output 13.5 MHz and 27 MHz video pixel clock outputs Internal 4.6 MHz (m ax) luminance and 1.3 MHz chrom inance filters Sub-carrier genlocked to HSYNC* and VSYNC* Sleep mode CMOS technology in 44-pin PLCC 5V single-supply operation Description The CH7202 video encoder integrates a dual PLL clock generator and a digital NTSC/PAL video encoder. By generating all essential clock signals for MPEG playback, and converting digital video inputs to either NTSC or PAL video signals, the CH7202 is an essential component of any low-cost solution for video-CD playback machines. The CH7202 dual PLL clock synthesizer generates all clocks and timing signals from a 14.31818 MHz reference crystal (see application note 19 “Tuning Clock Outputs” for selection and tuning of the 14.31818 MHz crystal). The CH7202 will accept HSYNC*, VSYNC*, and 2XPCLK clock inputs during slave mode operation. Timing signals from the PLLs can be used to generate the horizontal and vertic...