Super I/O Chipset; Super I/O Lpc Interface; Super I/O 16C550 Uarts - IEI Technology NANO-9452 User Manual

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2.8.3 Super I/O chipset

The iTE IT8712F Super I/O chipset is connected to the ICH7M Southbridge through the
LPC bus. The iTE IT8712F is an LPC interface-based Super I/O device that comes with
Environment Controller integration. Some of the features of the iTE IT8712F chipset are
listed below:
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LPC Interface
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PC98/99/2001, ACPI and LANDesk Compliant
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Enhanced Hardware Monitor
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Fan Speed Controller
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SmartGuardian Controller
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Single +5V Power Supply
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Two 16C550 UARTs for serial port control
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One IEEE 1284 Parallel Port
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Floppy Disk Controller
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Keyboard Controller
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Watchdog Timer
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Serial IRQ Support
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Vbat & Vcch Support
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Single +5V Power Supply
Some of the Super I/O features are described in more detail below:

2.8.3.1 Super I/O LPC Interface

The LPC interface on the Super I/O complies with the Intel® Low Pin Count Specification
Rev. 1.0. The LPC interface supports both LDRQ# and SERIRQ protocols as well as PCI
PME# interfaces.

2.8.3.2 Super I/O 16C550 UARTs

The onboard Super I/O has two integrated 16C550 UARTs that can support the following:
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Two standard serial ports (COM1 and COM2)
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