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82845PE Datasheet, PDF (19/176 Pages) Intel Corporation – 82845GE Graphics and Memory Controller Hub (GMCH) and 82845PE Memory Controller Hub (MCH) | |||
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Introduction
1.4.6
The graphics features on the 82845GE GMCH include:
⢠3D Setup and Render Engine
â Discrete Triangles, Strips and Fans Support
â Indexed Vertex and Flexible Vertex Formats
â Pixel Accurate Fast Scissoring and Clipping
Operation
â Backface Culling Support
â Supports D3D and OGL Pixelization Rules
â Anti-Aliased Lines Support
â Sprite Points Support
⢠High Quality Texture Engine
â Per Pixel Perspective Corrected Texture
Mapping
â Single Pass Texture Compositing (Multi-
Textures) at rate
â 12 Levels of Detail MIP Map Sizes from
1x1 to 2Kx2K
â All texture formats including 32-bit RGBA
â Alpha and Luminance Maps
â Texture ChromaKeying
â Bilinear, Trilinear, and Anisotropic MIP-
Mapped Filtering
â Cubic Environment Reflection Mapping
â Embossed Bump-Mapping
â DOT3-based Bump-Mapping
â DXTn Texture Decompression
â FXT1 Texture Decompression
⢠3D Graphics Rasterization Enhancements
â 200 MegaPixel/Sec Fill Rate
â Flat and Gouraud Shading
â Color Alpha Blending for Transparency
â Vertex and Programmable Pixel Fog and
Atmospheric Effects
â Color Specular Lighting
â Z Bias Support
â Dithering
â Anti-Aliasied Lines
â 16- and 24-bit Z Buffering
â 16- and 24-bit W Buffering
â 8-bit Stencil Buffering
â Double and Triple Render Buffer Support
â 16- and 32-bit Color
â Destination Alpha
â Maximum 3D Resolution Supported:
1600x1200x32 at 85 Hz
â Fast Clear Support
⢠2D Graphics
â Optimized 256-bit BLT Engine
â GDI+* Feature Support
â Alpha Stretch Blitter
â Anti-Aliased Lines
â 32-bit Alpha Blended Cursor
â Programmable 3-Color Transparent Cursor
â Color Space Conversion
â 8-, 16- and 32-bit Color
â ROP Support
⢠Video DVD/PC-VCR
â Dynamic Bob and Weave Support for Video
Streams
â Synclock Display and TV-out to video source
â Source Resolution: up to 720x480 with
2-vertical taps
â Software DVD at 30 fps, Full Screen
⢠Video Overlay
â Single Scalable Overlay
â Multiple Overlay Functionality provided via
Stretch Blitter (PIP, Video Conferencing, etc.)
â 5-tap Horizontal, 2-tap Vertical Filtered
Scaling
â Independent Gamma Correction
â Independent Brightness/Contrast/Saturation
â Independent Tint/Hue Support
â Destination Color-keying
â Source Chroma-keying
â Maximum Source Resolution: 720x480 (576)
â Maximum Overlay Display Resolution:
1600x1200x32 at 60 Hz and 1280x1024x32
at 85 Hz
Display Interfaces (Intel® 82845GE only)
The 82845GE GMCH provides interfaces to a progressive scan analog monitor and two DVOs
(multiplexed with AGP) that can drive an ADD card. The digital display channels can drive a
variety of DVO devices (e.g., TMDS, LVDS, and TV-Out).
⢠The GMCH has an integrated 350 MHz RAMDAC that can directly drive a progressive scan
analog monitor up to a resolution of 2048x1536 at 60 Hz.
⢠The GMCH provides two multiplexed DVOs that are can drive a 165 MHz pixel clock. The
two DVO ports can be combined to drive larger digital displays.
The GMCH is compliant with the Digital Visual Interface (DVI) Specification, Revision 1.0
(www.ddwg.org/register/download.htm). When combined with a DVI-compliant external device
and connector, the GMCH has a high-speed interface to a digital display (e.g., flat panel or digital
CRT).
Intel® 82845GE/82845PE Datasheet
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