EKK8301 ELAN Microelectronics Corp, EKK8301 Datasheet - Page 10

• Manufacturer Part Number: EKK8301
• Description: Keyboard Encoder
• Manufacturer: ELAN Microelectronics Corp

eKK8301
Keyboard Encoder
6 •
Read ID (F2)
- Responds with ACK.
- Discontinues scanning.
- Sends two ID bytes. The second byte will be sent within 500 us after first byte.
- Resumes scanning.
Set Typematic Rate/Delay (Hex F3)
- Responds ACK.
- Receives rate/delay value byte.
- Responds ACK.
- Set rate/delay (
- Returns to previous scanning state.
*
1. Repeat period = (8 + A) x (2 ^ B) x 0.00417 seconds
2. Delay = ( C + 1 ) x 250 milliseconds
Note 1
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.
bit 4~ bit 0
00000
00001
00010
00011
00100
00101
00110
00111
01000
01001
01010
01011
01100
01101
01110
01111
*
Note 1)
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)
bit 4~ bit 0
10000
10001
10010
10011
10100
10101
10110
10111
11000
11001
11010
11011
11100
11101
11110
11111
Product Specification (V1.0) 08.07.2002
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