WINBOND W83977TF

W83977TF Description générale

GENERAL DESCRIPTIONThe W83977TF is an evolving product from Winbonds most popular I/O chip W83877F --- which integrates the disk drive adapter, serial port (UART), IrDA 1.0 SIR, parallel port, configurable plug-and-lay registers for the whole chip --- plus additional powerful features: ACPI, 8042 keyboard controller with PS/2 mouse support, 23 general purpose I/O ports, full 16-bit address decoding, OnNow keyboard wake-up, OnNow mouse wake-up.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 driverUART 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 up to 921k bps for 14.769 Mhz and 1.5M bps for 24 MhzInfrared Support IrDA version 1.0 SIR protocol with maximum baud rate up to 115.2K bps Support SHARP ASK-IR protocol with maximum baud rate up to 57,600 bps Support S/W driver for Windows95TM and Windows98TM (MemphisTM)Parallel Port Compatible with IBM parallel port Support PS/2 compatible bi-directional parallel port Support Enhanced Parallel Port (EPP) - Compatible with IEEE 1284 specification Support Extended Capabilities Port (ECP) - Compatible with IEEE 1284 specification Extension FDD mode supports disk drive B; and Extension 2FDD mode supports disk drives A and B through parallel port Enhanced printer port back-drive current protectionKeyboard Controller 8042 based with optional F/W from AMIKKEYTM-2, Phoenix MultiKey/42TM or customer code with 2K bytes of programmable ROM, and 256 bytes of RAM Asynchronous Access to Two Data Registers and One status Register Software compatibility with the 8042 and PC87911 microcontrollers Support PS/2 mouse Support port 92 Support both interrupt and polling modes Fast Gate A20 and Hardware Keyboard Reset 8 Bit Timer/ Counter Support binary and BCD arithmetic 6MHz, 8 MHz, 12 MHz, or 16 MHz operating frequencyGeneral Purpose I/O Ports 23 programmable general purpose I/O ports; 3 dedicate, 20 optional General purpose I/O ports can serve as simple I/O ports, interrupt steering inputs, watching dog timer output, power LED output, infrared I/O pins, general purpose address decoder, KBC control I/O pinsOnNow Funtions Keyboard wake-up by programmable keys Mouse wake-up by programmable buttonsPackage 128-pin PQFP

Caractéristiques

• General
• Plug & Play 1.0A compatible
• 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 SCI signal issued from any of the 13 IQRs pins or GPIO xx
• Programmable configuration settings
• Single 24/48 Mhz clock input