W83627SF-AW Winbond, W83627SF-AW Datasheet - Page 62

• Manufacturer Part Number: W83627SF-AW
• Manufacturer: Winbond

Specifications of W83627SF-AW

• Pin Count: 128
• Lead Free Status / RoHS Status: Not Compliant

9. KEYBOARD CONTROLLER
The KBC (8042 with licensed KB BIOS) circuit of W83627SF is designed to provide the functions
needed to interface a CPU with a keyboard and/or a PS/2 mouse, and can be used with IBM
compatible personal computers or PS/2-based systems. The controller receives serial data from the
keyboard or PS/2 mouse, checks the parity of the data, and presents the data to the system as a byte
of data in its output buffer. Then, The controller will asserts an interrupt to the system when data are
placed in its output buffer. The keyboard and PS/2 mouse are required to acknowledge all data
transmissions. No transmission should be sent to the keyboard or PS/2 mouse until an acknowledge
is received for the previous data byte.
Multiplex I/O PINS
GP I/O PINS
KINH
Keyboard and Mouse Interface
P17
P12~P16
8042
-62-
P25
P21
T0
P24
P20
P27
P10
P26
P23
T1
P22
P11
MCLK
MDAT
KIRQ
MIRQ
KDAT
KCLK
GATEA20
KBRST
W83627SF
-