Air 486PH, User Manual, Page: 19 / 48

Peripheral Connectors
IDE Interface Connectors
The on-board 32-bit PCI IDE Interface connector (IDE1) is a
2x20-pin male header. This interface supports up to two hard
disk drives on the system. Pin assignment of IDE is as follow:
Pin Description Pin Description
2 Ground 1 IDE Reset/
4 Data 8 3 Data 7
6 Data 9 5 Data 6
8 Data 10 7 Data 5
10 Data 11 9 Data 4
12 Data 12 11 Data 3
14 Data 13 13 Data 2
16 Data 14 15 Data 1
18 Data 15 17 Data 0
20 No Connection 19 Ground
22 Ground 21 No Connection
24 Ground 23 I/O Write/
26 Ground 25 I/O Read/
28 ALE 27 No Connection
30 Ground 29 No Connection
32 IOCS16/ 31 IDE IRQ 14
34 No Connection 33 Address A1
36 Address A2 35 Address A0
38 IDE Chip Select 1/ 37 IDE Chip Select 0/
40 Ground 39 IDE Active/