ISA Super I/O

W83977AG-A integrates the disk drive adapter, serial port (UART), IrDA 1.0 SIR, parallel port, configurable plug-and-play registers in one chip, ACPI, 8042 keyboard controller with PS/2 mouse support, Real Time Clock, 14 general purpose I/O ports, full 16-bit address decoding, TV remote IR (Consumer IR, supporting NEC, RC-5, extended RC-5, and RECS-80 protocols), and the functions of IrDA 1.1 (MIR for 1.152M bps or FIR for 4M bps).<'xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /'>

The disk drive adapter functions of W83977AG-A include a floppy disk drive controller compatible with the industry standard 82077/ 765, data separator, write pre-compensation circuit, decode logic, data rate selection, clock generator, drive interface control logic, and interrupt/ DMA logic. W83977AG-A provides two high-speed serial communication ports (UARTs), one of which supports serial Infrared communication. Each UART includes a 16-byte send/receive FIFO, a programmable baud rate generator, complete modem control capability, and a processor interrupt system. W83977AG-A alone provides independent 3rd UART (32-byte FIFO) dedicated for IR function.

W83977AG-A supports one PC-compatible printer port (SPP), Bi-directional Printer port (BPP) and also Enhanced Parallel Port (EPP) and Extended Capabilities Port (ECP). Extension FDD Mode and Extension 2FDD Mode are also available through the printer port interface pins.

W83977AG-A provides functions that comply with ACPI. W83977AG-A also has auto power management to reduce power consumption. The keyboard controller is based on 8042 compatible instruction set with a 2K Byte programmable ROM and a 256-Byte RAM bank. Keyboard BIOS firmware is available with optional AMIKEY^TM -2, <'xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /'>Phoenix MultiKey/42^TM, or customer code.

• Support disk drive adapter

• Support serial port (UART); specially provides independent 3rd UART (32-byte FIFO) dedicated for IR function

• Support PC-compatible printer port (SPP) / Extended Capabilities Port (ECP) / Enhanced Parallel Port (EPP)

• Support 8042 keyboard controller with PS/2 mouse support, Real Time Clock

• Support 14 general purpose I/O ports, full 16-bit address decoding,

• Support IrDA 1.0 SIR, TV remote IR (Consumer IR, supporting NEC, RC-5, extended RC-5, and RECS-80 protocols), and the functions of IrDA 1.1 (MIR for 1.152M bps or FIR for 4M bps).