Winbond I/o With Serial-infrared Support

The W83787IF is a derivative product of W83787F with one of UARTs support HPSIR and ASKIR. The W83787IF integrates a disk drive adapter ,two 16550 compatible UARTs and one parallel port with EPP mode, ECP mode, and joystick mode. The disk drive adapter functions of the W83787IF is sames as W83787F which including a floppy disk drive controller compatible with the industry standard 765, data separator, write pre- compensation 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 W83787IF greatly reduces the number of components required for interfacing with floppy disk drives. The W83787IF supports four 360K, 720K, 1.2M, 1.44M disk drives and data transfer rates of 250Kb/S, 300Kb/S, 500Kb/S. There are two high-speed serial Communication ports (UARTs) on the W83787IF, one of them support serial infrared Communication The UARTs include 16-byte send/receive FIFOs a programmable baud rate generator, complete modem control capability, and a processor interrupt system. The W83787IF supports three optional PC-compatible printer ports: 378h, 278h and 3BCh. Additional bi-directional I/O capability is available by hardware control or software programming. The parallel port also supports the Enhanced Parallel Port (EPP) and Extended Capabilities Port (ECP). The W83787IF supports two embedded hard disk drive (AT bus) Interfaces and a game port with decoded read/write output. The W83787IF's Extension FDD Mode and Extension 2FDD Mode allow one or two external floppy disk drives to be connected to the computer through the printer Interface pins in notebook computer applications. By Winbond Electronics Corp America
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