IT8705F 查看數據表（PDF） - Unspecified
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IT8705F Datasheet PDF : 185 Pages
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Features
1. Features
Low Pin Count Interface
− Compliant with Intel LPC Interface Specification
Rev.1.0 (Sept. 29, 1997)
− Supports Serial IRQ Protocol
− Supports PCI PME# Interface
PC98/PC99, ACPI Compliant
− PC98 & PC99 compliant
− Register sets compatible with “Plug and Play
ISA Specification Rev. 1.0a”
− ACPI V. 1.0 compliant
− Supports 9 logical devices
Enhanced Hardware Monitor
− Built-in 8-bit Analog to Digital Converter
− 3 thermal inputs from remote thermistors or
thermal diode or diode-connected transistor
− 8 voltage monitor inputs (VBAT is measured
internally.)
− Watch Dog comparison of all monitored values
Fan Speed Controller
− Provides Fan ON/OFF and PWM control
− 3 programmable Pulse Width Modulation
(PWM) Fan control outputs
− Each PWM output supports 128 steps of PWM
modes
− Monitors 3 Fan tachometer inputs
Game Port
− Built-in 558 quad timers and buffer chips
− Supports direct connection of two joysticks
− Game port signals are multiplexed with GPIOs
Two 16C550 UARTs
− Supports two standard Serial ports
− UART1 is dedicated for Serial port
− UART2 supports either Serial Port or IrDA
1.0/ASKIR
−
MIDI Interface
− UART implementation
− Supports direct connection to MPU-401 MIDI
Consumer Remote Control (TV remote) IR
with Power-up Feature
IEEE 1284 Parallel Port
− Standard mode -- Bi-directional SPP compliant
− Enhanced mode -- EPP V.1.7 and 1.9 compliant
− High speed mode -- ECP, IEEE 1284 compliant
− Backdrive current reduction
− Printer power-on damage reduction
− Supports POST (Power-On Self Test) Data Port
Floppy Disk Controller
− Supports two 360K/ 720K/ 1.2M/ 1.44M/ 2.88M
floppy disk drives
− Enhanced digital data separator
− 3-Mode drives supported
− Supports automatic write protection via software
Smart Card Reader
− Compliant with Personal Computer Smart Card
(PC/SC) Working Group standard
− Compliant with smart card (ISO 7816) protocols
− Supports card present detect
− Supports one programmable clock frequency,
7.1 MHz, and 3.5 MHz (default) card clocks
48 General Purpose I/O Pins
− Input mode supports switch de-bounce
− SMI is routed through GPIOs
− Power LED Blinking Control
− Hardware Monitor Warning Beep Output
− External IRQ Inputs Routing into Serial IRQ
− Watch Dog Timer
Flash ROM Interface
− Up to 8M bits flash supported
Single 24/48 MHz Clock Inputs
Only for IT8705AF
− 1 chassis open detection input with low power
Flip-Flop backed by the battery
128-Pin QFP
www.ite.com.tw
1
Specifications subject to Change without Notice
IT8705F V0.4
ITPM-PN-200327
By Joseph Huang, 8/5/2003
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