IT8673F データシートの表示（PDF） - ITE Tech. INC.

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IT8673F

Advanced Input / Output (Advanced I/O)

ITE Tech. INC. 

IT8673F

2. General Description

The IT8673F is an ISA-based highly integrated I/O device. The IT8673F provides all the functions required by

legacy Super I/O and FAN Controller functionalities. The IT8673F meets the “Microsoft® PC98/99 system

design guide” requirements and is ACPI and LANDesk compliant.

The IT8673F has integrated eight logical devices, featuring an FAN Controller. The fan speed controller is

responsible to control three fan speeds through three 128 steps of Pulse Width Modulation (PWM) output pins

and to monitor three fans’ tachometer inputs.

Other features include a high-performance 2.88MB floppy disk controller with digital data separator, which is

able to support two 360K/720K/1.2M/1.44M/2.88M floppy disk drives. One multi-mode high-performance

parallel port features the bi-directional Standard Parallel Port (SPP), the Enhanced Parallel Port (EPP, V.1.7

and V.1.9 are supported), and the IEEE1284 compliant Extended Capabilities Port (ECP). Two 16C550

standard compatible enhanced UARTs perform asynchronous communication with enhanced wireless IrDA

1.0 or ASKIR protocols. One Consumer IR controller supports multiple remote control IR protocols. The I/O

device also has an integrated 8042 compatible Keyboard Controller with 2KB of programmable ROM for

customer application.

These eight logical devices can be individually enabled or disabled via software configuration registers. The

IT8673F utilizes power-saving circuitry to reduce power consumption and once a logical device is disabled the

inputs are gated, the outputs are tri-state and the input clock is disabled. The IT8673F requires just a single

24/48 MHz clock input and operates with only single +5V power supply.

The IT8673F is available in 128-pin QFP (Quad Flat package).

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