W83627SF-AW Winbond, W83627SF-AW Datasheet - Page 63
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W83627SF-AW
Manufacturer Part Number
W83627SF-AW
Description
Manufacturer
Winbond
Datasheet
1.W83627SF-AW.pdf
(116 pages)
Specifications of W83627SF-AW
Pin Count
128
Lead Free Status / RoHS Status
Not Compliant
- Current page: 63 of 116
- Download datasheet (601Kb)
9.1
The output buffer is an 8-bit read-only register at I/O address 60H (Default, PnP programmable I/O
address LD5-CR60 and LD5-CR61). The keyboard controller uses the output buffer to send the scan
code received from the keyboard and data bytes required by commands to the system. The output
buffer can only be read when the output buffer full bit in the register is "1".
9.2
The input buffer is an 8-bit write-only register at I/O address 60H or 64H (Default, PnP programmable
I/O address LD5-CR60, LD5-CR61, LD5-CR62, and LD5-CR63). Writing to address 60H sets a flag
to indicate a data write; writing to address 64H sets a flag to indicate a command write. Data written
to I/O address 60H is sent to keyboard (unless the keyboard controller is expecting a data byte)
through the controller's input buffer only if the input buffer full bit in the status register is “0”.
9.3
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
Input Buffer
Status Register
Auxiliary Device Output Buffer
General Purpose Time-out
Output Buffer Full
Input Buffer Full
Command/Data
BIT FUNCTION
Inhibit Switch
System Flag
Parity Error
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)
- 63 -
Publication Release Date: May 31, 2005
DESCRIPTION
W83627SF
Revision A1
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