Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D
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Table 11.6.3-1c. Single ended 80 pin cable pin assignments (Non-shielded connector)
Signal
Pin number
Signal
Pin number
+12 V
1
Ground
41
+12 V
2
Ground
42
+12 V
3
Ground
43
+12 V
4
Ground
44
NC
5
NC
45
NC
6
NC
46
NC
7
Ground
47
NC
8
Ground
48
NC
9
Ground
49
NC
10
Ground
50
-IO
11
Ground
51
-REQ
12
Ground
52
-CO
13
Ground
53
-SEL
14
Ground
54
-MSG
15
Ground
55
-RST
16
Ground
56
-ACK
17
Ground
57
-BSY
18
Ground
58
-ATN
19
Ground
59
-DBP
20
Ground
60
-DB7
21
Ground
61
-DB6
22
Ground
62
-DB5
23
Ground
63
-DB4
24
Ground
64
-DB3
25
Ground
65
-DB2
26
Ground
66
-DB1
27
Ground
67
-DB0
28
Ground
68
NC
29
Ground
69
NC
30
Ground
70
NC
31
Ground
71
NC
32
Ground
72
NC
33
Ground
73
+5 V
34
Ground
74
+5 V
35
Ground
75
+5 V
36
Ground
76
SYNC
[1]
37
LEDC
[2]
77
MTRON [3]
38
DLYDST [4]
78
SCSIA0
[5]
39
SCSIA1
[5]
79
SCSIA2
[5]
40
SCSIA3
[5]
80
Notes.
Signals [1] thru [5] are used in place of installing jumpers and cables on option select connectors J2, J5 and
J6. See also notes following Figure 10.1-1.
[1] Synchronous spindle synchronizing signal, generated by either host or drive.
[2] Front panel LED signal; indicates drive activity for host front panel hard drive activity indicator.
[3] Asserted by host to enable Motor Start option (starts motor via SCSI bus command).
[4] Asserted by host to enable Delayed Motor Starrt option (motor starts at power on or after a delay of 12
seconds times drive ID). This and [3] above are mutually exclusive options.
[5] Binnary code on A3, A2, A1 and A0 asserted by host to set-up SCSI bus ID in drive.
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