LPC47M112-MC View Datasheet(PDF) - SMSC -> Microchip

Part Name

Description

MFG CO.

LPC47M112-MC

Enhanced Super I/O Controller with LPC Interface / Dual Game Port Interface

SMSC -> Microchip 

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Enhanced Super I/O Controller with LPC Interface

Datasheet

21 8042 KEYBOARD CONTROLLER DESCRIPTION

The LPC47M112 is a Super I/O and Universal Keyboard Controller that is designed for intelligent keyboard management

in desktop computer applications.

The Universal Keyboard Controller uses an 8042 microcontroller CPU core. This section concentrates on the

LPC47M112 enhancements to the 8042. For general information about the 8042, refer to the "Hardware Description of

the 8042" in the 8-Bit Embedded Controller Handbook.

8042A

P27

P10

P26

TST0

P23

TST1

P22

P11

LS05

Keyboard and Mouse Interface

KDAT

KCLK

MCLK

MDAT

KIRQ is the Keyboard IRQ

MIRQ is the Mouse IRQ

Port 21 is used to create a GATEA20 signal from the LPC47M112.

SMSC DS – LPC47M112

Page 105

DATASHEET

Rev. 02-16-07

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