LPC47M192-NW Standard Microsystems (SMSC), LPC47M192-NW Datasheet - Page 105

• Manufacturer Part Number: LPC47M192-NW
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LPC47M192-NW

• Lead Free Status / RoHS Status: Compliant

7.11 8042 Keyboard Controller Description
The LPC47M192 is a Super I/O and Universal Keyboard Controller that is designed for intelligent keyboard manage-
ment in desktop computer applications. The Universal Keyboard Controller uses an 8042 microcontroller CPU core.
This section concentrates on the LPC47M192 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.
KIRQ is the Keyboard IRQ
MIRQ is the Mouse IRQ
Port 21 is used to create a GATEA20 signal from the LPC47M192.
SMSC DS – LPC47M192
8042A
TST0
TST1
P27
P10
P26
P23
P22
P11
Keyboard and Mouse Interface
DATASHEET
LS05
Page 105
KDAT
KCLK
MCLK
MDAT
Rev. 03/30/05