Akai PDP4206EM Service Manual - Page 42
Akai PDP4206EM - 42" Plasma EDTV Manual
UPC - 827935510257
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d to result in a personal injury or loss of life. Customers using or selling Pixelworks devices for use in such applications do so at their ris P r e li m i n a r y XGA/SXGA/UXGA Flat Panel Display Controller IC Product Specification: PW171 ImageProcessor General Description PW171 is a highly integrated "system-on-a-chip" that interfaces analog, digital, and video inputs in virtually any format to a flat panel monitor or multimedia display. PW171 is pin-compatible with the PW364. An embedded SDRAM frame buffer and memory controller perform frame rate conversion. Computer images from VGA to UXGA at almost any refresh rate can be resized to fit on a fixed-frequency target display device with any resolution up to UXGA with full 24-bit color. PW171 includes advanced second-generation image scaling that provides completely programmable, horizontal and vertical image scaling. PW171 also includes advanced second-generation sync decoding which provides full support for a wide variety of sync types. This includes interlaced, progressive, sync-on-green, and TMDS DE (Data Enable) only. PW171 ImageProcessor supports NTSC or PAL video data with a 4:3 aspect ratio and 16:9 aspect ratio sources, such as DVD or HDTV. Nonlinear scaling and separate horizontal and vertical scalers allow these inputs to be resized optimally for the native resolution and aspect ratio of the display device. PW171 uses an integrated PLL to synchronize the display interface timing to the input timing. This requires only a single external crystal to generate all necessary clocks for the system. An integrated OSD controller provides bit-mapped based OSDs with 16 colors from a 64K color palette. The OSD controller supports transparent and translucent functions. PW171 provides a Pulse Width Modulation (PWM) output for low cost backlight or audio control. With reference source code and an on-chip microprocessor, manufacturers can develop feature-rich products with rapid time-tomarket. Programmable features include the user interface, custom start-up screen, all automatic imaging features, and special screen effects. Features !Second-generation Image Scaling !Second-generation Automatic Image Optimization !Color Space Converter for graphics inputs !Video processing !Picture-In-Picture (PIP) !Frame rate conversion !Color matrix for improved color temperature adjustment !On-board PLLs to generate MCLK and DCLK !On-screen display !On-chip microprocessor !JTAG debugging port !8-bit, 9-bit, or 10-bit display outputs !24-bit CPU Addressing !Hardware 2-Wire serial bus support !Hardware PWM output Applications !LCD Monitors !Plasma Displays !Multimedia Displays PW171 incorporates new features while maintaining backward compatibility with the PW264 and PW364 ImageProcessors.