LPC47B272 (AMI Keyboard BIOS version of the LPC47B27x) is a 3.3V PC98/PC99
compliant Super I/O controller. It implements the LPC interface and provides
fan control through two fan speed control output pins and two fan
tachometer input pins.
true CMOS 765B core provides 100% compatibility with IBM PC/XTTM and
PC/ATTM architectures in addition to providing data overflow
and underflow protection. Sophisticated
power control circuitry (PCC) incorporated for keyboard, mouse and
consumer infrared wake-up events support, as
well as multiple low power-down modes. Software Configurable Logic (SCL) is incorporated
by the FDC37C669 Floppy Disk Controller for ease of use, which doesn’t require
any external filter components.
Software and register compatible with
SMSC's proprietary 82077AA core. The parallel port is compatible with IEEE
1284, EPP, and ECP. The I/O Address, DMA Channel and hardware IRQ of
each logical device in the LPC47B272 may be reprogrammed through the
internal configuration registers.
recommended functionality to support Windows '95 is provided.
Family parts LPC47B272-MS
8042 Keyboard Controller
100 QPF Packaging
3.3V Operating Voltage
37 GPIO Pins
Dual Game Port Interface
MPU-401 MIDI Support
ISA IRQ to Serial IRQ Conversion
2 16C550A and NS16C550A Compatible UARTs
1 Multi-Mode Parallel Port with ChiProtectTM, EPP and ECP