IEI Technology IMBA-9454ISA, User Manual

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IMBA-9454ISA ATX Motherboard
Page 32
2.6.3 Super I/O chipset
The iTE IT8712F Super I/O chipset is connected to the ICH8DO 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:
PC98/99/2001, ACPI and LANDesk Compliant
Enhanced Hardware Monitor
Fan Speed Controller
5V Power Supply
Two 16C550 UARTs for serial port control
One IEEE 1284 Parallel Port
Keyboard Controller
Watchdog Timer
Serial IRQ Support
Vbat & Vcch Support
5V Power Supply
Some of the Super I/O features are described in more detail below:
2.6.3.1 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.
2.6.3.2 Super I/O Digital Input/Output
The input mode supports switch debouncing or programmable external IRQ routing. The
output mode supports two sets of programmable LED blinking periods.
2.6.3.3 Super I/O 16C550 UARTs
The onboard Super I/O has two integrated 16C550 UARTs that can support the following:
Two standard serial ports (COM1 and COM2)