W83627DHG Datasheet, PDF (172/268 Pages) Winbond – WINBOND LPC I/O

W83627DHG
13.3 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.
BIT
BIT FUNCTION
DESCRIPTION
0 Output Buffer Full
0: Output buffer empty
1: Output buffer full
1 Input Buffer Full
0: Input buffer empty
1: Input buffer full
2 System Flag
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.
3 Command/Data
0: Data byte
1: Command byte
4 Inhibit Switch
0: Keyboard is inhibited
1: Keyboard is not inhibited
5
Auxiliary Device
Output Buffer
0: Auxiliary device output buffer empty
1: Auxiliary device output buffer full
6
General Purpose
Time-out
0: No time-out error
1: Time-out error
7 Parity Error
0: Odd parity
1: Even parity (error)
13.4 Commands
COMMAND
20h
60h
FUNCTION
Read Command Byte of Keyboard Controller
Write Command Byte of Keyboard Controller
BIT
BIT DEFINITION
7 Reserved
6 IBM Keyboard Translate Mode
5 Disable Auxiliary Device
4 Disable Keyboard
3 Reserve
2 System Flag
1 Enable Auxiliary Interrupt
0 Enable Keyboard Interrupt
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Publication Release Date: Aug, 22, 2007
Version 1.4