LPC47M112 Datasheet PDF - SMSC -> Microchip

The LPC47M112 is a 3.3V (5V tolerant) PC98 / PC99 compliant Super I/O controller.

The LPC47M112 implemnets the LPC interface, a pin reduced ISA bus interface which provides the same or better performance as the ISA/X-bus with a substantial savings in pins used.

The LPC74M112 provides fan control through two fan speed control output pins and two fan tachometer input pins.

It also provides 37 general purpose input / output ( GPIO ) pins, a dual game port interface and MPU-401 MIDI support.