W83977F-A中文資料華邦電子數(shù)據(jù)手冊(cè)PDF規(guī)格書

GENERAL DESCRIPTION

This data sheet covers two products: W83977F, and W83977AF whose pin assignment, and most of the functions are the same. W83977AF is an advanced version of W83977F featuring the FIR function.

FEATURES

General

? Plug & Play 1.0A Compliant

? Support 13 IRQs, 4 DMA channels, full 16-bit addresses decoding

? Capable of ISA Bus IRQ Sharing

? Compliant with Microsoft PC97 Hardware Design Guide

? Support DPM (Device Power Management), ACPI

? Programmable configuration settings

? 24 or 14.318 Mhz clock input

FDC

? Compatible with IBM PC AT disk drive systems

? Variable write pre-compensation with track selectable capability

? Support vertical recording format

? DMA enable logic

? 16-byte data FIFOs

? Support floppy disk drives and tape drives

? Detects all overrun and underrun conditions

? Built-in address mark detection circuit to simplify the read electronics

? FDD anti-virus functions with software write protect and FDD write enable signal (write data signal was forced to be inactive)

? Support up to four 3.5-inch or 5.25-inch floppy disk drives

? Completely compatible with industry standard 82077

? 360K/720K/1.2M/1.44M/2.88M format; 250K, 300K, 500K, 1M, 2M bps data transfer rate

? Support 3-mode FDD, and its Win95 driver

UART

? Two high-speed 16550 compatible UARTs with 16-byte send/receive FIFOs

? 3rd UART with 32-byte send/receive FIFO is supported for IR function [W83977AF only]

? MIDI compatible

? Fully programmable serial-interface characteristics:

--- 5, 6, 7 or 8-bit characters

--- Even, odd or no parity bit generation/detection

--- 1, 1.5 or 2 stop bits generation

? Internal diagnostic capabilities:

--- Loop-back controls for communications link fault isolation

--- Break, parity, overrun, framing error simulation

? Programmable baud generator allows division of 1.8461 Mhz and 24 Mhz by 1 to (216-1)

? Maximum baud rate up to 921k bps for 14.769 Mhz and 1.5M bps for 24 Mhz

Infrared

? Support IrDA version 1.0 SIR protocol with maximum baud rate up to 115.2K bps

? Support SHARP ASK-IR protocol with maximum baud rate up to 57,600 bps

? Support IrDA version 1.1 MIR (1.152M bps) and FIR (4M bps) protocol [W83977AF only]

--- Single DMA channel for transmitter or receiver

--- 3rd UART with 32-byte FIFO is supported in both TX/RX transmission [W83977AF only]

--- 8-byte status FIFO is supported to store received frame status (such as overrun CRC error, etc.)

? Support auto-config SIR and FIR [W83977AF only]

Parallel Port

? Compatible with IBM parallel port

? Support PS/2 compatible bi-directional parallel port

? Support Enhanced Parallel Port (EPP) - Compatible with IEEE 1284 specification

? Support Extended Capabilities Port (ECP) - Compatible with IEEE 1284 specification

? Extension FDD mode supports disk drive B; and Extension 2FDD mode supports disk drives A and B through parallel port

? Enhanced printer port back-drive current protection

Advanced Power Management (APM) Controlling

? Power turned on when RTC reaches a preset date and time

? Power turned on when a ring pulse or pulse train is detected on the PHRI, or when a high to low transition on PWAKIN1, or PWAKIN2 input signals

? Power turned on when PANSW input signal indicates a switch on event

? Power turned off when PANSW input signal indicates a switch off event

? Power turned off when a fail-safe event occurs (power-save mode detected but system is hung up)

? Power turned off when software issues a power off command

Keyboard Controller

? 8042 based with optional F/W from AMIKKEYTM-2, Phoenix MultiKey/42TM or customer code with 2K bytes of programmable ROM, and 256 bytes of RAM

? Asynchronous Access to Two Data Registers and One status Register

? Software compatibility with the 8042 and PC87911 microcontrollers

? Support PS/2 mouse

? Support port 92

? Support both interrupt and polling modes

? Fast Gate A20 and Hardware Keyboard Reset

? 8 Bit Timer/ Counter; support binary and BCD arithmetic

? 6, 8, 12, or 16 Mhz operating frequency (16 Mhz available only if input clock rate = 14.318 Mhz)