JG82855GMESL7VN Datasheet, PDF (14/213 Pages) Intel Corporation – Intel® 855GM/855GME Chipset Graphics and Memory Controller Hub (GMCH)

R
⎯ DVO (DVOB and DVOC) support
• Digital video out ports DVOB and
DVOC with 165 MHz dot clock on
each 12-bit interface; two 12-bit
channels can be combined to form one
dual channel 24-bit interface with an
effective dot clock of 330 MHz
• The combined DVO B/C ports as well
as individual DVO B/C ports can drive
a variety of DVO devices (TV-Out
Encoders, TMDS and LVDS
transmitters, etc.) with pixel resolution
up to 1600x1200 at 85 Hz and up to
2048x1536 at 72 Hz.
• Compliant with DVI Specification 1.0
⎯ Dedicated LFP (local flat panel) LVDS
interface
• Single- or dual-channel LVDS panel
support up to UXGA panel resolution
with frequency range from 25 MHz to
112 MHz (single channel/dual channel)
• Supports data format of 18 bpp
• SSC support of 0.5%, 1.0%, and 2.5%
center and down spread with external
SSC clock
• LCD panel power sequencing compliant
with SPWG timing specification
• Compliant with ANSI/TIA/EIA –644-
1995 spec
• Integrated PWM interface for LCD
backlight inverter control
• Bi-linear panel fitting
⎯ Tri-view support through LFP interface,
DVO B/C port, and CRT
ƒ ^{Internal Graphics Features}
⎯ Up to 64 MB of dynamic video memory
allocation
⎯ Display image rotation
⎯ Graphics core frequency
⎯ Display core frequency at 133 MHz or
200 MHz
⎯ Render core frequency at 100 MHz,
133 MHz, 200 MHz
⎯ 2D graphics engine
• Optimized 128-bit BLT engine
• Ten programmable and predefined
monochrome patterns
• Alpha Stretch BLT (via 3D pipeline)
• Anti-aliased lines
• Hardware-based BLT Clipping and
Scissoring
• 32-bit Alpha Blended cursor
• Programmable 64 x 64 3-color
Transparent cursor
• Color Space Conversion
• Three Operand Raster BLTs
• 8-bit, 16-bit, and 32-bit color
• ROP support
• DIB translation and Linear/Tile
addressing
⎯ 3D graphics engine
• 3D setup and render engine
• Zone rendering
• High quality performance texture engine
• Viewpoint transform and perspective
divide
• Triangle lists, strips and fans support
• Indexed vertex and flexible vertex
formats
• Pixel accurate fast scissoring and
clipping operation
• Backface culling support
• Microsoft DirectX* and SGI OpenGL*
pixelization rules
• Anti-Aliased lines support
• Sprite points support
• Provides the highest sustained fill rate
performance in 32-bit color and 24-bit
W mode
• High quality performance texture engine
• 266-MegaTexel/s peak performance
• Per pixel perspective corrected texture
mapping
• Single pass texture compositing (multi-
textures)
• Enhanced texture blending functions
14
Datasheet