Firmware Hub (Fwh); Input/Output (I/O) Controller; Real-Time Clock; Usb Support - Intel D815EGEW Product Manual

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Real-Time Clock (with 256-byte battery backed CMOS RAM)
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AC '97 digital link for:
 AC '97 2.1 compliant
 Logic for audio in, audio out, and mic input
 PCI functions for audio
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Supports two Master/DMA devices

Firmware Hub (FWH)

The 4 Mbit Firmware Hub has these features:
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System BIOS
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System security and management logic

Input/Output (I/O) Controller

The board supports the National PC87360 I/O controller.
The I/O controller provides the following features:
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3.3 V operation
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One serial port
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One parallel port with Extended Capabilities Port (ECP) and Enhanced Parallel Port
(EPP) support
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Serial IRQ interface compatible with serialized IRQ support for PCI systems
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PS/2-style mouse and keyboard interfaces
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Interface for one 1.2 MB, 1.44 MB, or 2.88 MB diskette drive
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Intelligent power management, including a programmable wake up event interface
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PCI power management support

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.

USB Support

The desktop board has two back panels USB ports. You can connect two USB peripheral devices
directly to the computer without an external hub. To attach more than two devices, connect an
external hub to either of the built-in ports.
The desktop board supports the Universal Host Controller Interface (UHCI) and takes advantage of
standard software drivers written to be compatible with UHCI.
Desktop Board Features
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