EKK8011A ELAN Microelectronics Corp, EKK8011A Datasheet - Page 10

• Manufacturer Part Number: EKK8011A
• Description: Usb & Ps/2 Keyboard Encoder
• Manufacturer: ELAN Microelectronics Corp

eKK8011AB
USB & PS/2 Keyboard Encoder
6 • • • •
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.
1. Repeat period = ( 8+A ) x ( 2^B) x 0.00417 seconds
2. Delay = ( C +1 ) x 250 milliseconds
3. Default rate = 10.9 chars/sec + 20%
Bit 4~ Bit 0
Default delay = 500 mS ±20%
A : Binary value of Bits 2, 1, and 0.
B : Binary value of Bits 4 and 3.
C : Binary value of Bits 6 and 5. Bit 7 is always 0.
00000
00001
00010
00011
00100
00101
00110
00111
01000
01001
01010
01011
01100
01101
01110
01111
Typematic Rate ±20%
30.0
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
8.6
8.0
(This specification is subject to change without further notice)
NOTE
Product Specification (V1.4) 07.10.2006
Bit 4~ Bit 0
10000
10001
10010
10011
10100
10101
10110
10111
11000
11001
11010
11011
11100
11101
11110
11111
Typematic Rate ±20%
7.5
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