W83977A Datasheet | Winbond

DESCRIPTION The W83977ATF is an evolving product from Winbond's most popular I/O chip W83877F --- which integrates the disk drive adapter, serial port (UART), Ir DA 1.0 SIR, parallel port, configurable plugand-play 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, On Now keyboard wake-up, On Now mouse wake-up, and On Now CIR wake-up. In addition, the W83977ATF provides IR functions: Ir DA 1.1 (MIR for 1.152M bps or FIR for 4M bps) and TV remote IR (Consumer IR, supporting NEC, RC-5, extended RC-5, and RECS-80 protocols). The disk drive adapter functions of W83977ATF include a floppy disk drive controller patible with the industry standard 82077/ 765, data separator, write pre-pensation circuit, decode logic, data rate selection, clock generator, drive interface control logic, and interrupt and DMA logic. The wide range of functions integrated onto the W83977ATF greatly reduces the number of ponents required for interfacing with floppy disk drives. The W83977ATF supports four 360K, 720K, 1.2M, 1.44M, or 2.88M disk drives and data transfer rates of 250 Kb/s, 300 Kb/s, 500 Kb/s,1 Mb/s, and 2 Mb/s. The W83977ATF provides two high-speed serial munication ports (UARTs), one of which supports serial Infrared munication. Each UART includes a 16-byte send/receive FIFO, a programmable baud rate generator, plete modem control capability, and a processor interrupt system. Both UARTs provide legacy speed with baud rate up to 115.2k bps and also advanced speed with baud rates of 230k, 460k, or 921k bps which support higher speed modems. The W83977ATF provides independent 3rd UART(32-byte FIFO) dedicated for the IR function. The W83977ATF supports one PC-patible printer port (SPP), Bi-directional Printer port (BPP) and also Enhanced Parallel Port (EPP) and Extended Capabilities Port (ECP). Through the printer port interface pins, also available are:...