Akai PDP4206EM Service Manual - Page 44

nD S P C o r po r a t io n NV 3 2 0 D a ta S he et NV320 Video Enhancement Processor 1.0 Introduction The NV320 is a single-chip, programmable video display processor providing advanced features for progressive scan, high frame-rate TV. The NV320 improves upon the functionality of the NV320P by handling non-standard video input signals. Other feature enhancements include DCTI, Black Level Stretch, and Saturation Control. The NV320 offers the following features. 1.1 Highly Integrated Video Processor • Anti-flickering circuitry • NTSC/PAL to SDTV 480p format conver sion Frame rate up-conversion (50Hz up to 75Hz for PAL, 60Hz up to 90Hz for NTSC) DCTI (Digital Color Transient Improvement) Black Level Stretch Saturation Control 1.6 Host Interface • Three, on-chip, 10-bit Digital-to-Analog • I2C interface • No programming needed for default mode application 1.7 General Description and Applications The NV320 is a single chip digital video processor for progressive and digital TV applications. It provides high quality video processing including video noise reduction, motion compensation, sharpness enhancement, and resolution enhancement. It also provides frame rate conversion and progressive scan conversion with deinterlacing. The NV320 is a CMOS mixed signal circuit highly integrated with three, 10-bit digital-toanalog converters controlled by the I2C interface. The NV320 accepts 16-bit YUV (4:2:2), 12-bit YUV (4:1:1), and 8-bit YUV (ITU-R 656) simultaneously, or it accepts 24-bit YUV (4:4:4) input from a front-end digital video color decoder or from an analog-to-digital converter. Additionally, NV320 supports multiple video input modes: acquisition mode, linelocked mode, and DVD mode. The NV320 has an on-chip detection logic block that corrects non-standard input signals before processing. Applications for the NV320 chip are listed here. Converters (DACs) Built-in memory controller supporting SDRAM or SGRAM 0.35µ CMOS process 3.3V power supply with 5V tolerant I/Os Standard 208-pin PQFP 1.2 Video Input • Multiple video input modes - Data acquisition mode - Line-locked mode - DVD mode • Multiple video input data formats - Digital 16-bit YUV (4:2:2) or 12-bit YUV (4:1:1) - Digital 8-bit YUV (ITU-R 656) - Digital 24-bit YUV (4:4:4) 1.3 Noise Reduction • Motion adaptive noise reduction filter 1.4 Color Processing • Built-in color space conversion • Selectable output color space: YUV or RGB 1.5 Video Processing Advanced, non-linear video processing Motion compensated deinterlacing Programmable peaking Non-linear interpolation Background coloring • Progressive scan televisions • Digital televisions (the chip is DTV/HDTV ready)