W83977EF Datasheet, PDF (8/150 Pages) Winbond – WINBOND I/O

W83977EF
FEATURES
General
• Plug & Play 1.0A compatible
• Support 12 IRQs, 4 DMA channels, full 16-bit address decoding
• Capable of ISA Bus IRQ Sharing
• Compliant with Microsoft PC98 Hardware Design Guide
• Support DPM (Device Power Management), ACPI
• Report 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
• 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
• 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: April 2003
-2 -
Revision 1.1