Datasheet

Product Description
29
1.8 Intel
®
865G Chipset
The Intel 865G chipset consists of the following devices:
• Intel 82865G Graphics and Memory Controller Hub (GMCH) with Accelerated Hub
Architecture (AHA) bus
• Intel 82801EB I/O Controller Hub (ICH5) with AHA bus
• Firmware Hub (FWH)
The GMCH is a centralized controller for the system bus, the memory bus, the AGP bus, and the
Accelerated Hub Architecture interface. The ICH5 is a centralized controller for the board’s I/O
paths. The FWH provides the nonvolatile storage of the BIOS. The component combination
provides the chipset interfaces as shown in Figure 9.
865G Chipset
82801EB
I/O Controller Hub
(ICH5)
82865G
Graphics and
Memory Controller
Hub (GMCH)
82802AB
4 Mbit Firmware
Hub (FWH)
AHA
Bus
System Bus
Parallel ATA
IDE Interface
USB
Display
Interface
OM15990
Network
AC Link
PCI
Bus
SMBus
Dual-Channel
DDR SDRAM
Bus
LPC Bus
Serial
ATA
IDE
Interface
AGP
Interface
CSA Interface
Figure 9. Intel 865G Chipset Block Diagram
For information about Refer to
The Intel 865G chipset http://developer.intel.com/
Resources used by the chipset Chapter 2