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

pinout

68 pin hi-density D-SUB female connector layout
68 pin hi-density D-SUB female connector  at the controller & devices
Pin Name Dir Description
1+DB12<->Data Bus 12
2+DB13<->Data Bus 13
3+DB14<->Data Bus 14
4+DB15<->Data Bus 15
5+DPB1<->Data Parity (odd Parity)
6GND---Ground
7+DB0<->Data Bus 0
8+DB1<->Data Bus 1
9+DB2<->Data Bus 2
10+DB3<->Data Bus 3
11+DB4<->Data Bus 4
12+DB5<->Data Bus 5
13+DB6<->Data Bus 6
14+DB7<->Data Bus 7
15+DPB<->Data Parity (odd Parity)
16DIFFSENSE?Diff Sense?
17TERMPWR<->Termination Power
18TERMPWR<->Termination Power
19res---reserved
20+ATN<--Attention
21GND---Ground
22+BSY<->Busy
23+ACK<--Acknowledge
24+RST<->Reset
25+MSG-->Message
26+SEL<->Select
27+C/D-->Control/Data
28+REQ-->Request
29+I/O-->Input/Output
30GND---Ground
31+DB8<->Data Bus 8
32+DB9<->Data Bus 9
33+DB10<->Data Bus 10
34+DB11<->Data Bus 11
35-DB12<->Data Bus 12
36-DB13<->Data Bus 13
37-DB14<->Data Bus 14
38-DB15<->Data Bus 15
39-DPB1<->Data Parity (odd Parity)
40GND---Ground
41-DB0<->Data Bus 0
42-DB1<->Data Bus 1
43-DB2<->Data Bus 2
44-DB3<->Data Bus 3
45-DB4<->Data Bus 4
46-DB5<->Data Bus 5
47-DB6<->Data Bus 6
48-DB7<->Data Bus 7
49-DPB<->Data Parity (odd Parity)
50GND---Ground
51TERMPWR<->Termination Power
52TERMPWR<->Termination Power
53res---reserved
54-ATN<--Attention
55GND---Ground
56-BSY<->Busy
57-ACK<--Acknowledge
58-RST<->Reset
59-MSG-->Message
60-SEL<->Select
61-C/D-->Control/Data
62-REQ-->Request
63-I/O-->Input/Output
64GND---Ground
65-DB8<->Data Bus 8
66-DB9<->Data Bus 9
67-DB10<->Data Bus 10
68-DB11<->Data Bus 11

Note: Direction is Device relative Bus (other Devices)

68 pin hi-density D-SUB male connector diagram
68 pin hi-density D-SUB male connector  at the cable

Source:www.pinouts.ru