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Description 15
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
specification, 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
I/O Controller
The SMSC LPC47M102 I/O Controller provides the following features:
• Low pin count (LPC) interface
• 3.3 V operation
• One serial port and one serial port header
• One parallel port with Extended Capabilities Port (ECP) and Enhanced Parallel Port
(EPP) support
• Serial IRQ interface compatible with serialized IRQ support for PCI systems
• PS/2-style mouse and keyboard interfaces
• Interface for two 1.2 MB, 1.44 MB, or 2.88 MB diskette drives
• Intelligent power management, including a programmable wake up event interface
• PCI power management support
• Fan control:
Four fan control outputs
Four fan tachometer inputs
The BIOS Setup program provides configuration options for the I/O controller.