Intel D845HV Input/Output I/O Controller, Real-Time Clock, Intel 82801BA I/O Controller Hub ICH2

Desktop Board Features

Intel® 82801BA I/O Controller Hub (ICH2)

The Intel 82801BA I/O Controller Hub integrates many I/O functions and provides the I/O subsystem with access to the rest of the platform. ICH2 features on D845HV and D845WN boards includes:

•Integrated IDE controller supports two Ultra DMA-33 and ATA-66/100 channels, BMIDE and PIO modes

•SMBus interface

•FWH interface

•Low Pin Count (LPC) interface

•AC’97 2.1 compliant link for audio and telephony CODECs

•Integrated Intel 82562ET 10/100 Mbit/sec Platform LAN Connect (PLC) device for interfacing the ICH2 LAN connect interface to LAN connect component

•Two UHCI USB 1.1 compliant host controllers with four ports (additional ports are provided by the I/O controller)

Firmware Hub (FWH)

The 4 Mbit Firmware Hub has these features:

•System BIOS

•System security and management logic

Input/Output (I/O) Controller

The SMSC LPC47M142 ultra I/O controller features the following:

•Low pin count (LPC) interface

•3.3 V operation

•Two serial ports (one via a board connector)

•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 one 1.2 MB, 1.44 MB, or 2.88 MB diskette drive

•Intelligent power management, including a programmable wake up event interface

•PCI power management support

•Two fan tachometer inputs

Real-Time Clock

The desktop boards have a time-of-day clock and 100-year calendar. A battery on the desktop board keeps the clock current when the computer is turned off.

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