Datasheet

Intel Desktop Board D875PBZ Technical Product Specification
28
1.7 Intel
®
875P Chipset
The Intel 875P chipset consists of the following devices:
• Intel 82875P Memory Controller Hub (MCH) with Accelerated Hub Architecture (AHA) bus
• Intel 82801ER I/O Controller Hub (ICH5-R) with AHA bus
• Intel 82802AC (8 Mbit) Firmware Hub (FWH)
The MCH is a centralized controller for the system bus, the memory bus, the AGP bus, and the
Accelerated Hub Architecture interface. The ICH5-R is a centralized controller for the Desktop
Board D875PBZ’s I/O paths. The FWH provides the nonvolatile storage of the BIOS. The
component combination provides the chipset interfaces as shown in Figure 8.
875P Chipset
82801ER
I/O Controller Hub
(ICH5-R)
82875P
Memory Controller
Hub (MCH)
82802AC
8 Mbit Firmware
Hub (FWH)
AHA
Bus
System Bus
Parallel ATA
IDE Interface
USB
AGP
Interface
OM15967
AC Link
PCI
Bus
SMBus
Dual-Channel
DDR SDRAM
Bus
LPC Bus
Serial
ATA
IDE
Interface
CSA
Interface
Figure 8. Intel 875P Chipset Block Diagram
For information about Refer to
The Intel 875P chipset http://developer.intel.com
Resources used by the chipset Chapter 2