MX86250AFC

INTRODUCTION

The MX86250 is a new generation of fully integrated graphics and video accelerator. On a single chip, it integrates a 64-bit graphics CoProcessor, a true-color video processor, 135 MHz RAMDAC and dual programmable clock synthesizer. The MX86250 not only delivers extreme high performance in conventional GUI acceleration, it also provides very rich functionality for motion video applications. The MX86250 true color video processor allows full screen full motion playback of AVI and MPEG video from software based Codecs such as MPEG, Cinepak and Indeo. For even higher quality MPEG video playback, the MX86250 Media port supports the VMI connector linking to an external MPEG-1 decoder chip. The Media port also provides for playback and capture of live video input from TV tuner or video camera.

FEATURES

High Performance 64 bit Graphics CoProcessor
• Uniformly accelerated graphics operations in all pixel formats : 256 color, High color and True color
• Optimized graphics engine for BitBLTs, rectangle fill, pattern fill, line draw, color expansion, text transfer, and clipping
• Raster Operations (ROPs) with 3 operand BitBLT ALU
• One chip 8x8x24 pattern memory achieves highest thrughput in the most common BitBLT in Windows — the Pattern BLT
• Deep on-chip Source and Destination FIFOs for sus tained burst cycles in BitBLTs
• Double buffered CoProcessor registers allows concur rent processing with CPU
• Built in Hardware cursor

Extremely high bandwidth

• Achieves single clock cycle DRAM access in Graphics Processor, Video Processor and Display Processor
• Provides 400 MB/sec memory bandwidth using -50 EDO DRAM chips
• Even higher performance can be achieved by using - 35 EDO DRAM for 533 MB/sec bandwidth which is comparable to synchronous DRAM

Fully Integrated for Lower system cost

• Integrated 24 bit True Color RAMDAC supports 135 Mhz pixel rate and 256x18 look-up table with High Color and True color bypass mode support
• Integrated dual clock synthesizers
• Glueless PCI local bus interface
• Two wire interface to EEPROM, VESA DDC inter face or I2C channel

Flexible Display Memory configuration

• 1,2, or 4 MB display memory.
• 256K x 4, 256K x 8, and 256K x 16 dual CAS or dual WE DRAM.
• Fast-page and Hyper-page EDO

Motion Video Codec Acceleration

• YUV/YCrCb conversion of industry standard YUV 4.2.2 or 2.1.1 formats
• Non-integer zoom in both X and Y direction
• Interpolation with Bi-linear filters in both Horizontal and Vertical dimensions
• Color Key supports video overlay, Chroma key sup ports transparency effect or blue screen video
• Edge Blending for smooth looking Blue screen video
• Video window is double buffered for smooth video play back.
• Independent video window mode allowing true-color video, independent of graphics color depth.
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