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PDF MX83093 Data sheet ( Hoja de datos )
| Número de pieza | MX83093 | |
| Descripción | U+P Keyboard Encoder | |
| Fabricantes | LIZE | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MX83093 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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Shenzhen LIZE Electronic Technology Co., Ltd
SPECIFICATION
MX83093
U+P Keyboard Encoder
Version 1.0
Reserves the right to change this documentation without prior notice
1 page  
Tel:86-755-8835 3502/03/04 Fax:86-755-8835 3509
Website:http://www.lizhiic.com
MX83093
USB+PS/2 Keyboard Encoder
5.1 PS/2 KEYBOARD FUNCTION DESCRIPTION
The keyboard buffer, power-on reset and self test, input, output, commands, and scan codes are
described in the following sections.
5.1.1 KEYBOARD BUFFER
The keyboard will buffer 16 bytes in a first-in-first-out order when the system receives scan codes
from the keyboard. The response codes and repeated codes will not be buffered. If the keystrokes
generate a multiple-byte sequence, the entire sequence must fit into the buffer or the keystroke is
discarded and a buffer-overrun condition occurs.
5.1.2 POWER-ON RESET AND SELF TEST
The duration of the keyboard Power-on-Reset (POR) should be within 150 milliseconds and 2
seconds after the power is applied to the keyboard.
After executing POR, the keyboard executes a self test. The LEDs are turned on at the beginning
and off at the end of the self test. The self test takes a minimum of 300 milliseconds and a
maximum of 500 milliseconds. If the self test is successful, a completion code AA hex is sent to the
system and the keyboard starts scanning. If the self test fails, and error code is sent, the keyboard
is disabled and waits for a command from the system. The completion codes are sent between
450 ms to 2.5 s after POR, and between 300 ms to 500 ms after a reset command is
acknowledged.
5.1.3 LOW VOLTAGE RESET (LVR)
MX83093 has a low voltage reset function, which is used to monitor the voltage of power supply or
external source. The low voltage reset voltage is 3.0V－3.2V. Vhys > 0.1V. Low voltage reset will
not happen if the period Vdd stays in low voltage is less than T ( 0.6ms).
Vdd
VLVR
Vhys
Resetb
T > 0.6mS
Shenzhen LIZE Electronic Technology Co., Ltd
Version: 1.0
Date: 14.Sep.2012
Page: 5 of 31
5 Page 
Tel:86-755-8835 3502/03/04 Fax:86-755-8835 3509
Website:http://www.lizhiic.com
MX83093
USB+PS/2 Keyboard Encoder
Key
U
I
O
P
[{
]}
\(|) (101 key
keyboard only)
CAPS
A
S
D
F
G
H
J
K
L
;(:)
‘(“)
K42 (102 key
keyboard only)
ENTER
SHIFT_L
K45 (102 key
keyboard only)
Z
Make Code
16
17
18
19
1A
1B
2B
3A
1E
1F
20
21
22
23
24
25
26
27
28
2B
1C
2A
56
2C
Break Code
96
97
98
99
9A
9B
AB
BA
9E
9F
A0
A1
A2
A3
A4
A5
A6
A7
A8
AB
9C
AA
D6
AC
Key
(2)
(0)
(*)
(9)
(6)
(3)
(DEL)
(-)
(+)
(ENTER)
ESC
F1
F2
F3
F4
F5
F6
F7
F8
F9
F10
F11
F12
SCROLL
Make Code
50
52
37
49
4D
51
Break Code
D0
D2
B7
C9
CD
D1
53 D3
4A
4E
E01C
01
3B
3C
3D
3E
3F
40
41
42
CA
CE
E09C
81
BB
BC
BD
BE
BF
C0
C1
C2
43 C3
44 C4
57 D7
58 D8
46 C6
Shenzhen LIZE Electronic Technology Co., Ltd
Version: 1.0
Date: 14.Sep.2012
Page: 11 of 31
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MX83093.PDF ] | |
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