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參數(shù)資料
| 型號： | W83C45 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 英文描述： | Keyboard Controller(鍵盤控制器) |
| 中文描述： | 鍵盤控制器（鍵盤控制器） |
| 文件頁數(shù)： | 7/21頁 |
| 文件大小： | 245K |
| 代理商： | W83C45 |
W83C45
Publication Release Date: November 1996
Preliminary Revision 0.9
- 7 -
7.0 AT MODE OPERATION
7.1 STATUS REGISTER (AT MODE)
The status register is an 8-bit read-only register at I/O address hex 64 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
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 is set to 0 after a power-on reset
0: Data byte
1: Command byte
0: Keyboard is inhibited
1: Keyboard is not inhibited
This bit is cleared when Password is enabled or if
P17=0
0: No transmit time-out error
1: Transmit time-out error
0: No receive time-out error
1: Receive time-out error
0: Odd parity (no error)
1: Even parity (error)
1
Input Buffer Full
2
System Flag (F0)
3
Command/data (F1)
4
Inhibit Switch
5
Transmit Time-out
6
Receive Time-out
7
Parity Error
7.2 Output Port Definition (AT Mode)
BIT
FUNCTION
0
System Reset
1
Gate A20
2
Undefined
3
Undefined
4
Output Buffer Full
5
Input Buffer Empty
6
Keyboard Clock (Output)
7
Keyboard Data (Output)
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| W83C45P | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Keyboard Controller |
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| W83C553FY-G | 制造商:Nuvoton Technology Corp 功能描述:I/O Controller Phase Controller 208-Pin PQFP 制造商:Winbond Electronics 功能描述:I/O CONTROLLER 制造商:Nuvoton Technology 功能描述:I/O Controller Phase Controller 208-Pin PQFP |
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