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ST506/412

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34 PIN IDC MALE at the Controller.

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20 PIN IDC MALE at the Controller.

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34 PIN IDC FEMALE at the Harddisk.

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20 PIN IDC FEMALE at the Harddisk.

Control connector

Pin Name Description
2 Head Sel 8
4 Head Sel 4
6 Write Gate
8 Seek Complete
10 Track 0
12 Write Fault
14 Head Sel 1
16 RES (reserved)
18 Head Sel 2
20 Index
22 Ready
24 Step
26 Drive Sel 1
28 Drive Sel 2
30 Drive Sel 3
32 Drive Sel 4
34 Direction In

Note: All odd pins are GND, Ground.

Data connector

Pin Name Description
1 Drive Selected
2 GND Ground
3 RES (reserved)
4 GND Ground
5 RES (reserved)
6 GND Ground
7 RES (reserved)
8 GND Ground
9 RES (reserved)
10 RES (reserved)
11 GND Ground
12 GND Ground
13 Write Data+
14 Write Data-
15 GND Ground
16 GND Ground
17 Read Data+
18 Read Data-
19 GND Ground
20 GND Ground

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