50 pin IDC MALE connector at the controller & harddisk |
|
Pin
|
Name
|
Dir
|
Description |
|
01
|
GND
|
|
Ground
|
|
02
|
GND
|
|
Ground
|
|
03
|
+DB0
|
|
+Data Bus 0 |
|
04
|
-DB0
|
|
-Data Bus 0 |
|
05
|
+DB1
|
|
+Data Bus 1 |
|
06
|
-DB1
|
|
-Data Bus 1 |
|
07
|
+DB2
|
|
+Data Bus 2 |
|
08
|
-DB2
|
|
-Data Bus 2 |
|
09
|
+DB3
|
|
+Data Bus 3 |
|
10
|
-DB3
|
|
-Data Bus 3 |
|
11
|
+DB4
|
|
+Data Bus 4 |
|
12
|
-DB4
|
|
-Data Bus 4 |
|
13
|
+DB5
|
|
+Data Bus 5 |
|
14
|
-DB5
|
|
-Data Bus 5 |
|
15
|
+DB6
|
|
+Data Bus 6 |
|
16
|
-DB6
|
|
-Data Bus 6 |
|
17
|
+DB7
|
|
+Data Bus 7 |
|
18
|
-DB7
|
|
-Data Bus Parity7
|
|
19
|
+DBP
|
|
+Data Bus Parity (odd Parity)
|
|
20
|
-DBP
|
|
-Data Bus Parity (odd Parity)
|
|
21
|
DIFFSENS
|
? |
???
|
|
22
|
GND
|
|
Ground
|
|
23
|
res
|
- |
Reserved
|
|
24
|
res
|
- |
Reserved
|
|
25
|
TERMPWR
|
|
Termination Power
|
|
26
|
TERMPWR
|
|
Termination Power
|
|
27
|
res
|
- |
Reserved
|
|
28
|
res
|
- |
Reserved
|
|
29
|
+ATN
|
|
+Attention
|
|
30
|
-ATN
|
|
-Attention
|
|
31
|
GND
|
|
Ground
|
|
32
|
GND
|
|
Ground
|
|
33
|
+BSY
|
|
+Bus is busy
|
|
34
|
-BSY
|
|
-Bus is busy
|
|
35
|
+ACK
|
|
+Acknowledge
|
|
36
|
-ACK
|
|
-Acknowledge
|
|
37
|
+RST
|
|
+Reset
|
|
38
|
-RST
|
|
-Reset
|
|
39
|
+MSG
|
|
+Message
|
|
40
|
-MSG
|
|
-Message
|
|
41
|
+SEL
|
|
+Select
|
|
42
|
-SEL
|
|
-Select
|
|
43
|
+C/D
|
|
+Control or Data
|
|
44
|
-C/D
|
|
-Control or Data
|
|
45
|
+REQ
|
|
+Request
|
|
46
|
-REQ
|
|
-Request
|
|
47
|
+I/O
|
|
+In/Out
|
|
48
|
-I/O
|
|
-In/Out
|
|
49
|
GND
|
|
Ground
|
|
50
|
GND
|
|
Ground
|
| 
50 pin IDC FEMALE connector at the cable |
