FDC87W22 Datasheet PDF - SMSC -> Microchip

GENERAL DESCRIPTION
The FDC87W22 integrates a disk drive adapter, serial port (UART), parallel port, IDE bus interface, and game port decoder onto a single chip. The FDC87W22 also has additional powerful features such as configurable plug-and-play registers for the whole chip and infrared support in one of the serial ports.