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參數(shù)資料
| 型號(hào)： | EM83050 |
| 英文描述： | Dual Advanced Synchronous Rectified Buck MOSFET Drivers with Protection Features; Temperature Range: -40°C to 85°C; Package: 16-QFN T&R |
| 中文描述： | 鍵盤編碼器為Windows 95，98 |
| 文件頁數(shù)： | 18/20頁 |
| 文件大?。?/td> | 116K |
| 代理商： | EM83050 |
7
* This specification are subject to be changed without notice.
EM83050H
KEYBOARD ENCODER
9.16.1999
Preliminary
Keyboards ID ( Hex 83AB )
The 2 byte ID is issued to respond to READ ID command. The low byte is sent first, followed by the high byte.
Keyboard buffer Overrun ( Hex 00 or FF )
If keyboard buffer overflows, the overrun code will replace the last byte in the buffer. If the keyboard is using
scan code set 1 , the code is hex FF. For sets 2 and 3, the code is hex 00.
Resend ( Hex FE )
When the keyboard receives an invalid input or any input with incorrect parity, the RESEND command is sent.
Keyboard Scan Code Table
The keyboard contains 3 scan code sets. The system defaults to scan code set 2, but can be switched to set 1 or
set 3 . The following tables show the key numbers and three scan code sets in hexadecimal values. All the keys
are typematics except for the pause key. When a key is pressed down, the make scan code is sent to the
system. When the key is released, its break code is sent. If two or more keys are held down, only the last key
pressed repeats at the typematic rate. Typematic operation stops when the last pressed key is released, even if
other keys are being released or some other keys are still held down.
The following table shows three scan code sets used in the keyboard.
scan code set 1
Key
Make code
Break code
Key
Make code
Break code
`(~)
29
A9
X
2D
AD
102
82
C
2E
AE
203
83
V
2F
AF
304
84
B
30
B0
405
85
N
31
B1
506
86M
32
B2
6
07
87
,(<)
33
B3
7
08
88
.(>)
34
B4
8
09
89
/(?)
35
B5
9
0A
8A
SHIFT_R
36
B6
0
0B
8B
CTRL_L
1D
9D
-(-)
0C
8C
ALT_L
38
B8
=(+)
0D
8D
SPACE
39
B9
BACK SPACE
0E
8E
ALT_R
E0 38
E0 B8
TAB
0F
8F
CTRL_R
E0 1D
E0 9D
Q
10
90
NUM
45
C5
W
11
91
(7)
47
C7
E
1292
(4)
4B
CB
R
13
93
(1)
4F
CF
T
14
94
(8)
48
C8
Y
15
95
(5)
4C
CC
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EM83050H | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:KEYBOARD ENCODER |
| EM83053 | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:KEYBOARD ENCODER |
| EM83053A | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:KEYBOARD ENCODER |
| EM83053AH | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:KEYBOARD ENCODER |
| EM83053BH | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:KEYBOARD ENCODER |
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