RG82855GMESL72L Datasheet, PDF (17/213 Pages) Intel Corporation – Intel® 855GM/855GME Chipset Graphics and Memory Controller Hub (GMCH)

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Intel^® 855GME Chipset GMCH
Features
Note: The Intel 855GME chipset GMCH has identical features to the Intel 855GM chipset GMCH
except for the additional features listed below.
ƒ ^{Processor/Host Bus Support}
⎯ Graphics Power Management
⎯ Pin and spec compatible with the Intel^®
• Dynamic Frequency Switching
Pentium^® M processor, Intel^® Pentium^® M
Processor on 90 nm process with 2-MB L2
Cache and Intel^® Celeron^® M processor
ƒ ^{Memory System}
• Memory Self-Refresh During C3
ƒ ^{Intel® Display Power Saving Technology}
ƒ ^{Power Management}
⎯ Support for 333 MHz DDR SDRAM
⎯ Optimized Clock Gating for 3D and Display
devices with max of two double-sided SO-
Engines
DIMMs (4 rows populated) with unbuffered ^{⎯ On-Die Thermal Sensor}
PC2700 DDR SDRAM.
ƒ ^{Accelerated Graphics Port (AGP) Interface}
ƒ ^Display
⎯ Supports a single AGP device
⎯ Dedicated LFP (local flat panel) interface
⎯ Supports AGP 2.0 including 1X,2X, and 4X
• Supports data format up to 24-bpp
ƒ ^{Internal Graphics Features}
AGP data transfers and 2X/4X Fast Write
protocol
⎯ Supports only 1.5 V AGP electricals
⎯ Core Vcc = 1.2 V or 1.35 V (1.35 V needed
to support Graphics core frequency of 250
MHz and 333 MHz DDR SDRAM devices)
⎯ Graphics core frequency
⎯ 32 deep AGP request queue
⎯ PCI semantic (Frame# initiated) accesses to
DDR SDRAM are snooped
⎯ AGP semantic (PIPE# and SBA) accesses to
• Display core frequency at 133 MHz,200
DDR SDRAM are not snooped
MHz, 250 MHz
⎯ Hierarchical PCI configuration mechanism
• Render core frequency at 100 MHz,
⎯ Delayed transaction support
133 MHz, 166 MHz, 200 MHz, 250 _ƒ AGP Busy/Stop Protocol
MHz
• Intel® Dual-Frequency Graphics
Technology
⎯ 3D Graphics Engine
• Enhanced Hardware Binning Instruction
Set supported
• Bi-Cubic Filtering supported
• Linear Gamma Blending for Video
Mixer Rendering (VMR)
• Video Mixer Rendering (VMR)
supported
Datasheet
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