DataSheet8.cn


PDF ( 数据手册 , 数据表 ) EKK8011

零件编号 EKK8011
描述 USB & PS/2 Keyboard Encoder
制造商 ELAN Microelectronics
LOGO ELAN Microelectronics LOGO 


1 Page

No Preview Available !

EKK8011 数据手册, 描述, 功能
www.DataSheet4U.com
eKK8011
USB & PS/2
Keyboard Encoder
Product
Specification
DOC. VERSION 1.0
ELAN MICROELECTRONICS CORP.
June 2003







EKK8011 pdf, 数据表
www.DataSheeKetK4U8.0co1m1
USB & PS/2 Keyboard Encoder
6 Function Description
The PS/2 keyboard function descriptions are provided in Section 6.1. In section 6.2,
we provide the USB keyboard function descriptions.
6.1 PS/2 Keyboard Function Description
We describe the keyboard buffer, power-on Reset and self test, input, output,
command, and scan codes in the following sections.
6.1.1 Keyboard Buffer
The keyboard will buffer 16 bytes in a first-in-first-out order when the system is able to
receive scan codes from the keyboard. The response codes and repeated codes will
not be buffered. If 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.
6.1.2 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 300
milliseconds and a maximum 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
milliseconds and 2.5 seconds after POR, and between 300 and 500 milliseconds after
a RESET command is acknowledged.
6.1.3 Keyboard Data Output
When the keyboard is ready to send data to the system, it first checks clock and data
lines. If either one is in the low state, data is stored in the keyboard buffer. If both
are in the high state, keyboard starts clocking data out. Data will be valid before the
trailing edge and after the leading edge of the clock pulse. During the transmission
the keyboard checks the clock line at least every 60 microseconds . If the system
lowers the clock lines before the leading edge of the 10th clock, the keyboard should
stop sending, then buffer the data and return clock and data lines to high state.
6.1.4 Keyboard Data Input
When the system is ready to send data to the keyboard, it first checks clock line to
see if keyboard is sending data. If keyboard is not sending data or it is sending data
but has not reached the 10th clock, the system can inhibit the interface by forcing the
clock line low for more than 60 microseconds and prepares to send data. The
4 Product Specification (V1.0) 06.10.2003
(This specification is subject to change without further notice)







EKK8011 equivalent, schematic
www.DataSheeKetK4U8.0co1m1
USB & PS/2 Keyboard Encoder
Note .
@1 : 101-key keyboard only.
@2 : 102-key keyboard only.
@3 : If the left Shift key is held down, the AA/2A shift make and break is sent with the
other scan codes. If the right Shift key is held down, B6/36 is sent. If both Shift
keys are down, both sets of codes are sent with the other scan code.
@4 : This key is not typematic. All associated scan codes occur on the make of the
key.
@5 : This Key is Make only. When the Num Lock is off, the encoder will send the
code which is the same as depressing Alt+0+1+2+8. When the Num Lock is on,
the encoder will send the code which is the same as depressing
Num+Alt+0+1+2+8+Num, and user will see the Num Lock LED flash one time.
scan code set 2
Key
`(~)
1
2
3
4
5
6
7
8
9
0
-(-)
=(+)
BACK SPACE
TAB
Q
W
E
R
T
Y
U
I
O
P
Make code
OE
16
1E
26
25
2E
36
3D
3E
46
45
4E
55
66
0D
15
1D
24
2D
2C
35
3C
43
44
4D
Break code
F0 OE
F0 16
F0 1E
F0 26
F0 25
F0 2E
F0 36
F0 3D
F0 3E
F0 46
F0 45
F0 4E
F0 55
F0 66
F0 0D
F0 15
F0 1D
F0 24
F0 2D
F0 2C
F0 35
F0 3C
F0 43
F0 44
F0 4D
Key
X
C
V
B
N
M
,(<)
.(>)
/(?)
SHIFT_R
CTRL_L
ALT_L
SPACE
ALT_R
CTRL_R
NUM
(7)
(4)
(1)
(8)
(5)
(2)
()
(*)
(9)
Make code
22
21
2A
32
31
3A
41
49
4A
59
14
11
29
E0 11
E0 14
77
6C
6B
69
75
73
72
70
7C
7D
Break code
F0 22
F0 21
F0 2A
F0 32
F0 31
F0 3A
F0 41
F0 49
F0 4A
F0 59
F0 14
F0 11
F0 29
E0 F0 11
E0 F0 14
F0 77
F0 6C
F0 6B
F0 69
F0 75
F0 73
F0 72
F0 70
F0 7C
F0 7D
12
Product Specification (V1.0) 06.10.2003
(This specification is subject to change without further notice)










页数 30 页
下载[ EKK8011.PDF 数据手册 ]


分享链接

Link :

推荐数据表

零件编号描述制造商
EKK8011USB & PS/2 Keyboard EncoderELAN Microelectronics
ELAN Microelectronics
EKK8011ABUSB & PS/2 Keyboard EncoderELAN Microelectronics
ELAN Microelectronics
eKK8011SUSB and USB and PS/2 Keyboard EncoderELAN Microelectronics
ELAN Microelectronics

零件编号描述制造商
STK15C88256-Kbit (32 K x 8) PowerStore nvSRAMCypress Semiconductor
Cypress Semiconductor
NJM4556DUAL HIGH CURRENT OPERATIONAL AMPLIFIERNew Japan Radio
New Japan Radio
EL1118-G5 PIN LONG CREEPAGE SOP PHOTOTRANSISTOR PHOTOCOUPLEREverlight
Everlight


DataSheet8.cn    |   2020   |  联系我们   |   搜索  |  Simemap