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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)
6 GND --- 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)
16 DIFFSENSE ? Diff Sense?
17 TERMPWR <-> Termination Power
18 TERMPWR <-> Termination Power
19 res --- reserved
20 +ATN <-- Attention
21 GND --- 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
30 GND --- 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)
40 GND --- 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)
50 GND --- Ground
51 TERMPWR <-> Termination Power
52 TERMPWR <-> Termination Power
53 res --- reserved
54 -ATN <-- Attention
55 GND --- 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
64 GND --- 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 layout
68 pin hi-density D-SUB male connector
at the cable
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