Intel Desktop Board D815EEA2/D815EPEA2 Technical Product Specification
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1.9 I/O Controller
The D815EEA2 and D815EPEA2 boards support either of two I/O controllers:
• The standard SMSC LPC47M132 I/O controller or
• The optional SMSC LPC47M142 I/O controller
Both I/O controllers provide the following features:
• Low pin count (LPC) interface
• 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, 1.44 MB, or 2.88 MB diskette drive
• Intelligent power management, including a programmable wake up event interface
• PCI power management support
• Fan control
One fan control output
Two fan tachometer inputs
The optional SMSC LPC47M142 I/O controller provides an additional USB hub.
The BIOS Setup program provides configuration options for the I/O controller.
For information about Refer to
The USB hubs on the D815EEA2 board Section 1.8.1.2.2, page 28
The USB hubs on the D815EPEA2 board Section 1.8.2.2.2, page 33
SMSC LPC47M132 and LPC47M142 I/O controllers http://www.smsc.com
1.9.1 Serial Ports
The D815EEA2 and D815EPEA2 boards each have two serial ports. Serial port A is located on the
back panel. Serial port B is accessible using the connector at location J8H1. The serial ports’
NS16C550-compatible UARTs support 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 A connector Figure 13, page 64
The signal names of the serial port A connector Table 24, page 66
The location of the serial port B connector Figure 16, page 78
The signal names of the serial port B connector Table 44, page 79
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