Intel ® 82801Ba I/O Controller Hub (Ich2); Firmware Hub (Fwh); Input/Output (I/O) Controller; Real-Time Clock - Intel D845HV Product Manual

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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.
Desktop Board Features
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