SCSI-III External Hi D-Sub (Differential) connector

#Computer#Harddisk interfaces

SCA=Single connector Attachment

80 pin SCSI SCA-2 female connector pin-out & layout

80 pin SCSI SCA-2 female connector

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

PinNameDirDescription
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
46DIFFSNS---Differential Sense
47+DB(11)<->Data Bus 11
48+DB(10)<->Data Bus 10
49+DB(9)<->Data Bus 9
50+DB(8)<->Data Bus 8
51+I/O-->Input/Output
52+REQ-->Request
53+C/D-->Control/Data
54+SEL<->Select
55+MSG-->Message
56+RST<->Reset
57+ACK<--Acknowledge
58+BSY<->Busy
59+ATN<--Attention
60+P_CRCA? 
61+DB(7)<->Data Bus 7
62+DB(6)<->Data Bus 6
63+DB(5)<->Data Bus 5
64+DB(4)<->Data Bus 4
65+DB(3)<->Data Bus 3
66+DB(2)<->Data Bus 2
67+DB(1)<->Data Bus 1
68+DB(0)<->Data Bus 0
69+DB(P1)? 
70+DB(15)<->Data Bus 15
71+DB(14)<->Data Bus 14
72+DB(13)<->Data Bus 13
73+DB(12)<->Data Bus 12
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)

SCSI-III External Hi D-Sub (Differential) connector

SCSI-III External Hi D-Sub (Single-ended) connector