5-20
Hard Disk Cable Connector Signals
Pin Signal Name I/O Pin Signal Name
1 Host Reset O 21 No Connection
2 Ground 22 Ground
3 Host Data 7 I/O 23 Host IOW
4 Host Data 8 I/O 24 Ground
5 Host Data 6 I/O 25 Host IOR
6 Host Data 9 I/O 26 Ground
7 Host Data 5 I/O 27 I/O Channel
Ready
8 Host Data 10 I/O 28 No Connection
9 Host Data 4 I/O 29 No Connection
10 Host Data 11 I/O 30 Ground
11 Host Data 3 I/O 31 Host IRQ
12 Host Data 12 I/O 32 No Connection
13 Host Data 2 I/O 33 Host A1
14 Host Data 13 I/O 34 No Connection
15 Host Data 1 I/O 35 Host A0
16 Host Data 14 I/O 36 Host A2
17 Host Data 0 I/O 37 Host CS0
18 Host Data 15 I/O 38 Host CS1
19 Ground Power 39 ACTIVE bar
20 No Connection 40 Ground