MAXDATA FUSION 6000 I, Системное руководство

Страница: 13 / 31

13 MAXDATA Fusion 6000
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
• Intel
®
ligent 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.
Serial Ports
The MAXDATA Fusion 6000 System board has one serial port connector and one serial port
header. The serial port A connector is located on the back panel. The serial port B header
is located near the main power connector. The serial ports’ NS16C550-compatible UART
supports data transfers at speeds up to 115.2 kb/s with BIOS support.
Parallel Port
The 25-pin D-Sub parallel port connector is located on the back panel. In the BIOS Setup
program, the parallel port can be set to the following modes:
• Output only (PC AT-compatible mode)
• Bi-directional (PS/2 compatible)
• EPP
• ECP
Diskette Drive Controller
The I/O controller supports two diskette drives that are compatible with the 82077 diskette
drive controller and supports both PC-AT and PS/2 modes.
Keyboard and Mouse Interface
PS/2 keyboard and mouse connectors are located on the back panel. The +5 V lines to these
connectors are protected with a PolySwitch circuit that, like a self-healing fuse, reestablishes
the connection after an overcurrent condition is removed.

NOTE
The keyboard is supported in the bottom PS/2 connector and the mouse is supported in
the top PS/2 connector. Power to the computer should be turned off before a keyboard or
mouse is connected or disconnected.
The keyboard controller contains the AMI keyboard and mouse controller code, provides the
keyboard and mouse control functions, and supports password protection for power-on/reset.
A power-on/reset password can be specifi ed in the BIOS Setup program.