12
Description
Intel
®
845E Chipset
The Intel
®
845E chipset consists of the following devices:
• Intel
®
82845E Memory Controller Hub (MCH) with Accelerated Hub Architecture (AHA)
bus
• Intel
®
82801BA I/O Controller Hub (ICH2) with AHA bus
• Intel
®
82802AB 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 ICH2 is a centralized controller for the
board’s I/O paths. The FWH provides the nonvolatile storage of the BIOS.
Intel
®
82845E Memory Controller Hub (MCH)
The MCH supports the data integrity features supported by the Pentium
®
Pro bus, including
address, request, and response parity. The 845E chipset always generates ECC data while
it is driving the processor data bus, although the data bus ECC can be disabled or enabled
by BIOS. It is enabled by default.
The MCH provides the following:
• An integrated Synchronous DRAM memory controller with auto detection of SDRAM.
• Support for ACPI Rev 1.0b compliant power management.
Intel
®
82801BA I/O Controller Hub (ICH2)
The Intel
®
82801BA ICH2 has these features:
• 33 MHz Peripheral Component Interface (PCI) Local Bus slots supporting PCI specifica-
tion, Rev 2.2.
• Support for the Low Pin Count (LPC) interface.
• Integrated IDE controller (supports Ultra ATA-66/100 mode and Ultra DMA 33 mode).
• Integrated LAN media access controller.
• Universal Serial Bus Interface with two USB controllers providing two back panel ports,
and the option for two front panel ports, in a Universal Host Controller Interface (UHCI)
implementation.
• Power management logic (ACPI Rev 1.0b compliant).
• Support for the System Management Bus routed to:
− All PCI Slots
− S5 wake from all PCI slots
• Real-Time Clock (with 256-byte battery backed CMOS RAM).
• Supports two Master/DMA devices.
Intel
®
82802AB Firmware Hub (FWH)
The Intel
®
82802AB Firmware Hub (FWH) includes a 4 megabit symmetrical flash memory
device. Internally, the device is grouped into eight 64 KB blocks that are individually erasable,
lockable, and unlockable.
The FWH provides the following:
• System BIOS program
• Logic that enables protection for storing and updating of platform information
Summary of Contents for FUSION 6000 I
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