Desktop Board Features
13
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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