w83627sf Winbond Electronics Corp America, w83627sf Datasheet - Page 87

• Manufacturer Part Number: w83627sf
• Description: Winbond I/o
• Manufacturer: Winbond Electronics Corp America

7. 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
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
- 80 -
P25
P21
T0
P24
P20
P27
P10
P26
P23
T1
P22
P11
Publication Release Date: Nov. 2000
MCLK
MDAT
KIRQ
MIRQ
KDAT
KCLK
GATEA20
KBRST
PRELIMINARY
W83627SF
Revision 0.60
-
compatible