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W83977CTF

WINBOND I/O

Winbond 

W83977EF/ CTF

PRELIMINARY

FEATURES

General

• Plug & Play 1.0A compatible

• Supports 12 IRQs, 4 DMA channels, full 16-bit address decoding

• Capable of ISA Bus IRQ Sharing

• Compliant with Microsoft PC98 Hardware Design Guide

• Supports DPM (Device Power Management), ACPI

• Reports ACPI status interrupt by SCI# signal issued from any of the 12 IQRs pins or GPIO xx

• Programmable configuration settings

• Single 24/48 Mhz clock input

FDC

• Compatible with IBM PC AT disk drive systems

• Variable write pre-compensation with track selectable capability

• Supports vertical recording format

• DMA enable logic

• 16-byte data FIFOs

• Supports 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 is

forced to be inactive)

• Supports 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

• Supports 3-mode FDD, and its Win95 driver

UART

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

• 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

Publication Release Date: March 1999

-2 -

Revision A1

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