Intel
®
Desktop Board D815EEA Technical Product Specification
26
1.7 I/O Controller
The SMSC LPC47M102 I/O Controller provides 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
• IrDA
†
1.0 compliant
• Fan control:
Two fan control outputs
Two fan tachometer inputs
The BIOS Setup program provides configuration options for the I/O controller.
For information about Refer to
SMSC LPC47M102 I/O controller http://www.smsc.com
1.7.1 Serial Ports
The D815EEA board has two serial ports. Serial port A is located on the back panel. Serial port B
is accessible using the connector at location J8E1. 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 9, page 54
The signal names of the Serial port A connector Table 23, page 56
The location of the Serial port B connector Figure 12, page 69
The signal names of the Serial port B connector Table 45, page 70
1.7.2 Infrared Support
The front panel connector includes four pins that support Hewlett-Packard HSDL-1000 compatible
infrared (IR) transmitters and receivers. In the BIOS Setup program, Serial port B can be directed
to a connected IR device. The IR connection can be used to transfer files to or from portable
devices like laptops, PDAs, and printers. The Infrared Data Association (IrDA) specification
supports data transfers of 115.2 kbits/sec at a distance of 1 meter.
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