W83877TF Datasheet, PDF (12/154 Pages) Winbond – I/O chip disk drive adapter

W83877TF
FEATURES
General:
• Plug & Play 1.0A Compliant
• Support 8 IRQs (ISA), or 15 IRQs (Serial IRQ), 3 DMA channels, and 480 re-locatable address
• Capable of ISA Bus IRQ Sharing
• Comply with Microsoft PC 97 Hardware Design Guide
• Support DPM (Device Power Management), ACPI
• Report ACPI status interrupt by SCI signal from SCI pin, serial IRQ IRQSER pin, or IRQ A~H pins
• Single 24MHz/48MHZ clock input
FDC:
• Compatible with IBM PC AT disk drive systems
• Variable write pre-compensation with track selectable capability
• DMA enable logic
• 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
was 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 vertical recording format
• Support 3-mode FDD, and its Win95 driver
• 16-byte data FIFOs
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
• 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 is up to 921k bps for 14.768MHz and 1.5M bps for 24MHz
Publication Release Date: March 1998
-2-
Version 0.61