W83977F Datasheet, PDF (13/181 Pages) Winbond – PLUG & PLAY 1.0A COMPLIANT

W83977F/ W83977AF
PRELIMINARY
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
Publication Release Date: March 1998
-2-
Revision 0.58