W83627DHG-PT Nuvoton Technology Corporation of America, W83627DHG-PT Datasheet - Page 182

• Manufacturer Part Number: W83627DHG-PT
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627DHG-PT

• Pin Count: 128
• Lead Free Status / RoHS Status: Compliant

14.3 Status Register
The status register is an 8-bit, read-only register at I/O address 64h (Default, PnP programmable I/O
address LD5-CR62 and LD5-CR63) that holds information about the status of the keyboard controller
and interface. It may be read at any time.
14.4 Commands
BIT
0
1
2
3
4
5
6
7
COMMAND
Output Buffer Full
Input Buffer Full
System Flag
Command/Data
Inhibit Switch
Auxiliary Device Output Buffer
General Purpose Time-out
Parity Error
20h
60h
BIT FUNCTION
Read Command Byte of Keyboard Controller
Write Command Byte of Keyboard Controller
BIT
Table 14-1 Bit Map of Status Register
7
6
5
4
3
2
1
0
Table 14-2 KBC Command Sets
Reserved
Disable Auxiliary Device
Disable Keyboard
Reserve
System Flag
Enable Auxiliary Interrupt
IBM Keyboard Translate Mode
Enable Keyboard Interrupt
0: Output buffer empty
1: Output buffer full
0: Input buffer empty
1: Input buffer full
This bit may be set to 0 or 1 by writing to the
system flag bit in the command byte of the
keyboard controller. It defaults to 0 after a
power-on reset.
0: Data byte
1: Command byte
0: Keyboard is inhibited
1: Keyboard is not inhibited
0: Auxiliary device output buffer empty
1: Auxiliary device output buffer full
0: No time-out error
1: Time-out error
0: Odd parity
1: Even parity (error)
W83627DHG-P/W83627DHG-PT
BIT DEFINITION
-172-
FUNCTION
DESCRIPTION
Publication Release Date: July 09, 2009
Version 1.94