WINBOND W83977AF

W83977AF General Description

GENERAL DESCRIPTIONThis data sheet covers two products: W83977F, and W83977AF whose pin assignment, and most of the functions are the same. W83977AF is an advanced version of W83977F featuring the FIR function.FEATURESGeneral• 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 inputFDC• 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• 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 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 IrDA version 1.1 MIR (1.152M bps) and FIR (4M bps) protocol [W83977AF only]   --- Single DMA channel for transmitter or receiver   --- 3rd UART with 32-byte FIFO is supported in both TX/RX transmission [W83977AF only]   --- 8-byte status FIFO is supported to store received frame status (such as overrun CRC error, etc.)• Support auto-config SIR and FIR [W83977AF only]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 protectionAdvanced Power Management (APM) Controlling• Power turned on when RTC reaches a preset date and time• Power turned on when a ring pulse or pulse train is detected on the PHRI, or when a high to low transition on PWAKIN1, or PWAKIN2 input signals• Power turned on when PANSW input signal indicates a switch on event• Power turned off when PANSW input signal indicates a switch off event• Power turned off when a fail-safe event occurs (power-save mode detected but system is hung up)• Power turned off when software issues a power off commandKeyboard 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• 6, 8, 12, or 16 Mhz operating frequency (16 Mhz available only if input clock rate = 14.318 Mhz)

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