W83977EF Winbond Electronics Corp America, W83977EF Datasheet - Page 78

• Manufacturer Part Number: W83977EF
• Description: Description = W83877TF Plus Kbc, GP I/O, Wake-Up, Power Fail Resume ;; Package = QFP 128
• Manufacturer: Winbond Electronics Corp America

6.4
COMMAND
Commands
AAh
A4h
A5h
A6h
A7h
A8h
A9h
20h
60h
Read Command Byte of Keyboard Controller
Write Command Byte of Keyboard Controller
Test Password
Returns 0Fah if Password is loaded
Returns 0F1h if Password is not loaded
Load Password
Load Password until a "0" is received from the system
Enable Password
Enable the checking of keystrokes for a match with the password
Disable Auxiliary Device Interface
Enable Auxiliary Device Interface
Interface Test
Self-test
Returns 055h if self test succeeds
BIT
BIT
00
01
02
03
04
7
6
5
4
3
2
1
0
Disable Auxiliary Device
Reserved
Disable Keyboard
Reserve
System Flag
Enable Auxiliary Interrupt
IBM Keyboard Translate Mode
Enable Keyboard Interrupt
No Error Detected
Auxiliary Device "Clock" line is stuck low
Auxiliary Device "Clock" line is stuck high
Auxiliary Device "Data" line is stuck low
Auxiliary Device "Data" line is stuck low
BIT DEFINITION
-72 -
BIT DEFINITION
FUNCTION
Publication Release Date: April 2003
W83977EF
Revision 1.1