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ProMotion-6422
ProMotion-6422 is a highly-integrated member of Alliance Semiconductor’s family of high-performance MultiMedia User Interface accelerators. It incorporates a powerful Windows graphical user interface accelerator engine, unique motion video acceleration hardware and a high-precision DAC + clock generator, all in a single integrated 208-pin PQFP package.
The chip’s 64-bit internal architecture and memory bus give the 6422 superior performance in a low-cost DRAM-based accelerator. Proprietary BetterHalf technology cuts cost by reducing system memory requirements, enabling 1024x768 accelerated truecolor display with just 3MB standard DRAM.
The chip’s advanced multimedia acceleration engine enables high quality motion video playback at no cost premium over graphics-only solutions. The engine includes an on-chip colorspace converter to accelerate decompression, and a hardware scaler with full bilinear filter and line buffer, to scale smoothly from native size up to full screen at full speed. The engine delivers smooth display of motion video data at 30 fps, at full SIF resolution under DirectDraw, DirectVideo, and other interfaces. Supported standards include MPEG-1, Video for Windows, Indeo, TrueMotion, DCI, and other video applications and codecs.
Features
- High performance GUI accelerator
- Optimized BLT/pattern engine
- Fast CAD & drawing operations
- Color expansion
- Line draw
- No-cost motion video
- Smooth scaled video at 30 fps
- Hardware scaling up to full screen
- YUV to RGB conversion
- DirectDraw™ and DCI support
- Graphics + 24-bit video in 1MB buffer
- Integrated DAC and clock generator
- Pixel clock to 135 MHz
- Gamma correction
- BetterHalf cost-saving technology
- VESA standards support
- Advanced Feature Connector (VAFC)
- Power management (DPMS)
- Bi-directional monitor data (DDC-2B)
- High performance host interface
- Glueless PCI 2.0
- VESA VL-bus
- Efficient memory mapped addressing
- Fast 64-bit DRAM interface
- 240MB/second peak bandwidth
- 1MB, 2MB, 4MB standard DRAM
- x4, x8, x16 DRAM support