Component Features; Intel 82815Eg Gmch Features; Figure 2. Component Block Diagram - Intel 815EG Design Manual

R
1.4.2

Component Features

Figure 2. Component Block Diagram

GPA or AIMM
Card
®
1.4.2.1 Intel 82815EG GMCH Features
• Processor/System Bus Support
 Optimized for Celeron and Pentium III processors which use 0.13 micron technology at
133 MHz system bus frequency
 Support for Celeron and Pentium III processors (CPUID = 068xh); at 66 MHz system bus
frequency
 Supports 32-bit AGTL or AGTL+ bus addressing
 Supports uniprocessor systems
 Utilizes AGTL and AGTL+ bus driver technology (gated AGTL/AGTL+ receivers for
reduced power)
• Integrated DRAM controller
 32 MB to 512 MB using 16-Mb/64-Mb/128-Mb technology
 Supports up to three double-sided DIMMS (6 rows)
 100 MHz, 133 MHz SDRAM interface
 64-bit data interface
 Standard Synchronous DRAM (SDRAM) support (x-1-1-1 access)
 Supports only 3.3 V DIMM DRAM configurations
 No registered DIMM support
 Support for symmetrical and asymmetrical DRAM addressing
 Support for x8, x16 DRAM device widths
 Refresh mechanism: CAS-before-RAS only
 Support for DIMM serial PD (presence detect) scheme via SMbus interface
 Suspend-To-RAM (STR) power management support via self-refresh mode using CKE
®
Intel 815EG Chipset Platform Design Guide
System bus (66/100/133 MHz)
Processor I/F
Data
stream
control &
Local memory I/F dispatch
Hub I/F
Hub
System
memory I/F
Primary display
Overlay RAMDAC
H/W cursor FP / TVout
3D pipeline
2D (blit engine)
Internal graphics
Introduction
SDRAM
100/133
MHz, 64 bit
Monitor
Digital
video out
comp_blk_1
19