eKK8011AB
USB & PS/2 Keyboard Encoder
Read ID (F2)
- Responds with ACK
- Discontinues scanning
- Sends two ID bytes. The second byte will be sent within 500 µS after the first byte.
- Resumes scanning
Set Typematic Rate/Delay (Hex F3)
- Responds with ACK
- Receives rate/delay value byte
- Responds with ACK
- Set rate/delay (see Note 1)
- Returns to previous scanning state.
NOTE
1. Repeat period = ( 8+A ) x ( 2^B) x 0.00417 seconds
A : Binary value of Bits 2, 1, and 0.
B : Binary value of Bits 4 and 3.
2. Delay = ( C +1 ) x 250 milliseconds
C : Binary value of Bits 6 and 5. Bit 7 is always 0.
3. Default rate = 10.9 chars/sec + 20%
Default delay = 500 mS ±20%
Bit 4~ Bit 0
Typematic Rate ±20%
Bit 4~ Bit 0
Typematic Rate ±20%
00000
30.0
10000
7.5
00001
00010
00011
00100
00101
00110
00111
01000
01001
01010
01011
01100
01101
01110
01111
26.7
24.0
21.8
20.0
18.5
17.1
16.0
15.0
13.3
12.0
10.9
10.0
9.2
10001
10010
10011
10100
10101
10110
10111
11000
11001
11010
11011
11100
11101
11110
11111
6.7
6.0
5.5
5.0
4.6
4.3
4.0
3.7
3.3
3.0
2.7
2.5
2.3
2.1
2.0
8.6
8.0
6 •
Product Specification (V1.4) 07.10.2006
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
