| Description |
W83977EG-AW integrates the disk drive adapter, serial port (UART), IrDA 1.0 SIR, parallel port, configurable plug-and-play registers for the whole chip, ACPI, 8042 keyboard controller with PS/2 mouse support, 14 general purpose I/O ports, full 16-bit address decoding, OnNow keyboard Wake-Up, OnNow mouse Wake-Up.The disk drive adapter functions of W83977EG-AW 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 and DMA logic.
W83977EG-AW 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. W83977EG-AW 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. W83977EG-AW provides functions that comply with ACPI (Advanced Configuration and Power Interface). W83977EG-AW 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 are available with optional AMIKEY™ -2, Phoenix MultiKey/42™, or customer code.
W83977EG-AW provides a set of flexible I/O control functions to the system designer through a set of General Purpose I/O ports. W83977EG-AW also supports Power-loss control, and makes the system never miss to detect any Wake-Up event provided by the chipset such as INTEL PIIX4 ™. W83977EG-AW is made to fully comply with Microsoft PC98 Hardware Design Guide. |
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