w83977atf Winbond Electronics Corp America, w83977atf Datasheet - Page 3

• Manufacturer Part Number: w83977atf
• Description: Winbond I/o
• Manufacturer: Winbond Electronics Corp America

FEATURES
General
FDC
UART
Plug & Play 1.0A
Support 13 IRQs, 4 DMA channels, full 16-bit address decoding
Capable of ISA Bus IRQ Sharing
Compliant with Microsoft PC97 Hardware Design Guide
Support DPM (Device Power Management), ACPI
Report ACPI status interrupt by
Programmable configuration settings
Single 24/48 Mhz clock input
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
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
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 (2
Maximum baud rate up to 921k bps for 14.769 Mhz and 1.5M bps for 24 Mhz
compatible
SCI
signal issued from any of the 13 IQRs pins or GPIO xx
-2-
Publication Release Date: April 1998
W83977ATF
PRELIMINARY
16
-1)
Revision 0.52