Product Description
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1.9 I/O Controller
The SMSC LPC47M142 I/O controller provides the following features:
• 3.3 V operation
• Two serial ports
• 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 or 1.44 MB diskette drive
• Intelligent power management, including a programmable wake-up event interface
• PCI power management support
• Two fan tachometer inputs
• USB hub
The BIOS Setup program provides configuration options for the I/O controller.
✏
NOTE
The SMSC LPC47M132 I/O controller is used if the USB 2.0 option is supported. The SMSC
LPC47M132 I/O controller supports all the features of the LPC47M142 controller, except the
LPC47M132 does not have a USB hub.
For information about Refer to
SMSC LPC47M142 and LPC47M132 I/O controllers http://www.smsc.com
1.9.1 Serial Port
The D850MD and D850MV boards have two serial port connectors on the back panel. The serial
ports’ NS16C550-compatible UART supports data transfers at speeds up to 115.2 kbits/sec with
BIOS support. The serial ports can be assigned as COM1 (3F8h), COM2 (2F8h), COM3 (3E8h),
or COM4 (2E8h).
For information about Refer to
The location of the serial port connectors Figure 12, page 54
The signal names of the serial port connectors Table 22, page 56
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