Appendix A Pin Assignments
2 7
A.2 IDE hard drive connector (CN7)
Table A-2: IDE hard drive connector
Pin Signal
Pin Signal
1
IDE RESET*
2
GND
3
DATA 7
4
DATA 8
5
DATA 6
6
DATA 9
7
DATA 5
8
DATA 10
9
DATA 4
10
DATA 11
11
DATA 3
12
DATA 12
13
DATA 2
14
DATA 13
15
DATA 1
16
DATA 14
17
DATA 0
18
DATA 15
19
SIGNAL GND
20
N/C
21
DRQ*
22
GND
23
IO WRITE*
24
GND
25
IO READ*
26
GND
27
IO CHANNEL READY
28
N/C
29
ACK
30
GND
31
IRQ14 (IDE IRQ)
32
IOCS16*
33
ADDR 1
34
N/C
35
ADDR 0
36
ADDR 2
37
HARD DISK
38
HARD DISK
SELECT 0
SELECT 1
39
IDE ACTIVE*
40
GND
* low active
39
40