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80 pin SCSI SCA-2 female connector layout
80 pin SCSI SCA-2 female connector
SCA=Single connector Attachment

Drive connector: AMP Champ 557613-1 or AMP Champ 557114-5
Cable connector: AMP Champ 2-557103-1 or AMP Champ 2-557101-1

Pin Name Dir Description
112V---+12 VDC
212V---+12 VDC
312V---+12 VDC
412V---+12 VDC
53.3V---+3.3 VDC
63.3V---+3.3 VDC
7-DB(11)<->Data Bus 11
8-DB(10)<->Data Bus 10
9-DB(9)<->Data Bus 9
10-DB(8)<->Data Bus 8
11-I/O-->Input/Output
12-REQ-->Request
13-C/D-->Control/Data
14-SEL<->Select
15-MSG-->Message
16-RST<->Reset
17-ACK<--Acknowledge
18-BSY<->Busy
19-ATN<--Attention
20-P_CRCA? 
21-DB(7)<->Data Bus 7
22-DB(6)<->Data Bus 6
23-DB(5)<->Data Bus 5
24-DB(4)<->Data Bus 4
25-DB(3)<->Data Bus 3
26-DB(2)<->Data Bus 2
27-DB(1)<->Data Bus 1
28-DB(0)<->Data Bus 0
29-DB(P1)? 
30-DB(15)<->Data Bus 15
31-DB(14)<->Data Bus 14
32-DB(13)<->Data Bus 13
33-DB(12)<->Data Bus 12
345V---Ground (Signal)
355V---Ground (Signal)
365V CHARGE---Ground (Signal)
37SPINDLE SYNC?Spindle Sync
38RMT_START?Remote Start
39SCSI ID (0)---SCSI ID Bit 0
40SCSI ID (2)---SCSI ID Bit 2
4112V GROUND---+12 VDC Ground
4212V GROUND---+12 VDC Ground
4312V GROUND---+12 VDC Ground
44MATED 1? 
453.3V CHARGE---+3.3 VDC Charge
46GROUND---Ground
47SIGNAL RETURN---Ground (Signal)
48SIGNAL RETURN---Ground (Signal)
49SIGNAL RETURN---Ground (Signal)
50SIGNAL RETURN---Ground (Signal)
51SIGNAL RETURN---Ground (Signal)
52SIGNAL RETURN---Ground (Signal)
53SIGNAL RETURN---Ground (Signal)
54SIGNAL RETURN---Ground (Signal)
55SIGNAL RETURN---Ground (Signal)
56SIGNAL RETURN---Ground (Signal)
57SIGNAL RETURN---Ground (Signal)
58SIGNAL RETURN---Ground (Signal)
59SIGNAL RETURN---Ground (Signal)
60SIGNAL RETURN---Ground (Signal)
61SIGNAL RETURN---Ground (Signal)
62SIGNAL RETURN---Ground (Signal)
63SIGNAL RETURN---Ground (Signal)
64SIGNAL RETURN---Ground (Signal)
65SIGNAL RETURN---Ground (Signal)
66SIGNAL RETURN---Ground (Signal)
67SIGNAL RETURN---Ground (Signal)
68SIGNAL RETURN---Ground (Signal)
69SIGNAL RETURN---Ground (Signal)
70SIGNAL RETURN---Ground (Signal)
71SIGNAL RETURN---Ground (Signal)
72SIGNAL RETURN---Ground (Signal)
73SIGNAL RETURN---Ground (Signal)
74MATED 2? 
755V GROUND---+5 VDC Ground
765V GROUND---+5 VDC Ground
77ACTIVE LED OUT? 
78DLYD_START? 
79SCSI ID (1)---SCSI ID Bit 1
80SCSI ID (3)---SCSI ID Bit 3

5: RESERVED/NC 6: RESERVED/NC 20: -DB(P0) 36: 5 VOLT 44: 12 V GROUND 45: RESERVED/NC 46: RESERVED/NC 74: 5 V GROUND

Note: Direction is Device relative Bus (other Devices)
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