W83627UHG Nuvoton Technology Corporation of America, W83627UHG Datasheet - Page 144

• Manufacturer Part Number: W83627UHG
• Description: IC I/O CONTROLLER 128-QFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627UHG

• Applications: PC's, PDA's
• Interface: LPC
• Voltage - Supply: 3.3V, 5V
• Package / Case: 128-XFQFN
• Mounting Type: Surface Mount
• Pin Count: 128
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

12.3 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
0
1
2
3
4
5
6
7
Output Buffer Full
Input Buffer Full
System Flag
Inhibit Switch
Command/Data
Auxiliary Device
Output Buffer
General Purpose
Time-out
Parity Error
BIT FUNCTION
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)
Table 12-1 Bit Map of Status Register
-133-
DESCRIPTION
Publication Release Date: May 25, 2007
W83627UHG
Revision 1.0