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LC749450NW Datenblatt(PDF) 2 Page - Sanyo Semicon Device |
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LC749450NW Datenblatt(HTML) 2 Page - Sanyo Semicon Device |
2 / 17 page No.8096-2/17 LC749450NW 28.0 31.2 0.15 0.2 (0.5) (1.25) 1 52 156 105 53 208 104 157 Package Dimensions unit : mm 3261 SANYO : SQFP208J (28 × 28) IC Specifications • Supply voltage: Core block: 1.8 V, I/O blocks: 3.3 V • Maximum operating frequency: 27 MHz (IP conversion mode), 135 MHz (IP conversion not used) • Package: 208-pin SQFP Main Applications • LCD TVs, monitors, and projectors • PDP TVs and progressive scan TVs • DVD players and recorders Functional Overview 1. Input signal formats The digital data port supports the following input signal formats. 30-bit RGB 30-bit (4:4:4) YCbCr/YPbPr 20-bit (4:2:2) YCbCr/YPbPr 10-bit signals conforming to the ITU-R BT.656 standard (horizontal and vertical sync inputs required) NTSC (480i/480p), PAL (576i/576p), and HD (1080i/720p) RGB (up to 135 MHz) 2. IP conversion block For NTSC (480i) and PAL (576i) inputs the LC749450NW provides motion adaptive IP conversion or cinema IP conversion (3:2 pull down) with both 2D/3D noise reduction and cross color/cross luminance cancellation. External SDRAM (either 2 × 16 Mbits or 1 × 64 Mbits) is required when the functions of this block are enabled. This block is set to bypass mode for 480p, 576p, 1080i, 720p, and PC (RGB) inputs. (1) Motion adaptive IP conversion The LC749450NW performs motion detection for each pixel that enters the IP conversion block. Based on that result, the block performs interlaced to progressive conversion. Pixels that are found to be static are interpolated between fields and pixels that are found to be moving are interpolated within the field. Since this circuit takes correlations in the diagonal directions into account when performing inter-field interpolation for moving sections of the image, it can create smooth video with minimal stair-stepping artifacts (jaggies). Furthermore, this function can handle images that range from relaxed smooth video to video with violent motion by setting parameters and changing the motion threshold values for each pixel. Continued on next page. |
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