EKK6111 ELAN Microelectronics Corp, EKK6111 Datasheet - Page 14

• Manufacturer Part Number: EKK6111
• Description: Rf Keyboard Decoder
• Manufacturer: ELAN Microelectronics Corp

eKK6111
RF Keyboard Decorder
7
8 N
Back Space
= (+)
Keyboard Scan Code Table
Key
- (_)
7.1 Scan Code Set 1
‘(~)
1
2
3
4
5
6
7
8
9
0
6.7.5 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.
6.7.6 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.
6.7.7 Resend ( Hex FE )
When the keyboard receives an invalid input or any input with incorrect parity, the
RESEND command is sent.
The keyboard contains 3 scan code sets. The system defaults to scan 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.
Make code
0A
0B
0C
0D
0E
29
02
03
04
05
06
07
08
09
Break code
A9
8A
8B
8C
8D
8E
82
83
84
85
86
87
88
89
(This specification is subject to change without further notice)
SHIFT_R
CTRL_L
SPACE
ALT_R
ALT_L
Key
, (<)
. (>)
/ (?)
M
X
C
B
N
V
Product Specification (V1.0) 11.15.2002
Make code
E0 38
2D
2E
1D
2F
30
31
32
33
34
35
36
38
39
Break code
E0 B8
AD
AE
AF
B0
B1
B2
B3
B4
B5
B6
9D
B8
B9