FDC37B78X SMSC Corporation, FDC37B78X Datasheet - Page 129

• Manufacturer Part Number: FDC37B78X
• Description: Enhanced Super I/O Controller with ACPI Support/ Real Time Clock and Consumer IR
• Manufacturer: SMSC Corporation

A Universal Keyboard Controller designed for
intelligent keyboard management in desktop
computer applications is implemented.
Universal Keyboard Controller uses an 8042
microcontroller
KIRQ is the Keyboard IRQ
MIRQ is the Mouse IRQ
Port 21 is used to create a GATEA20 signal
from the FDC37B78x.
8042A
CPU
TST0
TST1
8042 KEYBOARD CONTROLLER DESCRIPTION
core.
P27
P10
P26
P23
P22
P11
Keyboard and Mouse Interface
This
section
The
129
LS05
concentrates on the 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.
KDAT
KCLK
MCLK
MDAT