W83977F-A Datasheet, PDF (10/182 Pages) Winbond – WINBOND I/O

W83977F-A/ W83977G-A/ W83977AF-A/ W83977AG-A
2. FEATURES
General
y Plug & Play 1.0A Compliant
y Support 13 IRQs, 4 DMA channels, full 16-bit addresses decoding
y Capable of ISA Bus IRQ Sharing
y Compliant with Microsoft PC97 Hardware Design Guide
y Support DPM (Device Power Management), ACPI
y Programmable configuration settings
y 24 or 14.318 Mhz clock input
FDC
y Compatible with IBM PC AT disk drive systems
y Variable write pre-compensation with track selectable capability
y Support vertical recording format
y DMA enable logic
y 16-byte data FIFOs
y Support floppy disk drives and tape drives
y Detects all overrun and underrun conditions
y Built-in address mark detection circuit to simplify the read electronics
y FDD anti-virus functions with software write protect and FDD write enable signal (write data
signal was forced to be inactive)
y Support up to four 3.5-inch or 5.25-inch floppy disk drives
y Completely compatible with industry standard 82077
y 360K/720K/1.2M/1.44M/2.88M format; 250K, 300K, 500K, 1M, 2M bps data transfer rate
y Support 3-mode FDD, and its Win95 driver
UART
y Two high-speed 16550 compatible UARTs with 16-byte send/receive FIFOs
y 3rd UART with 32-byte send/receive FIFO is supported for IR function [W83977AF/AG only]
y MIDI compatible
y 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
y Internal diagnostic capabilities:
--- Loop-back controls for communications link fault isolation
--- Break, parity, overrun, framing error simulation
y Programmable baud generator allows division of 1.8461 Mhz and 24 Mhz by 1 to (216-1)
y Maximum baud rate up to 921k bps for 14.769 Mhz and 1.5M bps for 24 Mhz
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