SCSI Internal (Differential)

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SCSI = Small Computer System Interface

Image:conn_idc50m.gif 50 PIN IDC MALE at the controller and devices

Image:conn_idc50f.gif 50 PIN IDC FEMALE at the cable

Pin Name Dir Description
01 GND - Ground
02 GND - Ground
03 +DB0 IN/OUT +Data Bus 0
04 -DB0 IN/OUT -Data Bus 0
05 +DB1 IN/OUT +Data Bus 1
06 -DB1 IN/OUT -Data Bus 1
07 +DB2 IN/OUT +Data Bus 2
08 -DB2 IN/OUT -Data Bus 2
09 +DB3 IN/OUT +Data Bus 3
10 -DB3 IN/OUT -Data Bus 3
11 +DB4 IN/OUT +Data Bus 4
12 -DB4 IN/OUT -Data Bus 4
13 +DB5 IN/OUT +Data Bus 5
14 -DB5 IN/OUT -Data Bus 5
15 +DB6 IN/OUT +Data Bus 6
16 -DB6 IN/OUT -Data Bus 6
17 +DB7 IN/OUT +Data Bus 7
18 -DB7 IN/OUT -Data Bus Parity7
19 +DBP IN/OUT +Data Bus Parity (odd Parity)
20 -DBP IN/OUT -Data Bus Parity (odd Parity)
21 DIFFSENS ? ???
22 GND - Ground
23 res - Reserved
24 res - Reserved
25 TERMPWR IN/OUT Termination Power
26 TERMPWR IN/OUT Termination Power
27 res - Reserved
28 res - Reserved
29 +ATN IN +Attention
30 -ATN IN -Attention
31 GND - Ground
32 GND - Ground
33 +BSY IN/OUT +Bus is busy
34 -BSY IN/OUT -Bus is busy
35 +ACK IN +Acknowledge
36 -ACK IN -Acknowledge
37 +RST IN/OUT +Reset
38 -RST IN/OUT -Reset
39 +MSG OUT +Message
40 -MSG OUT -Message
41 +SEL IN/OUT +Select
42 -SEL IN/OUT -Select
43 +C/D OUT +Control or Data
44 -C/D OUT -Control or Data
45 +REQ OUT +Request
46 -REQ OUT -Request
47 +I/O OUT +In/Out
48 -I/O OUT -In/Out
49 GND - Ground
50 GND - Ground

Notes

  • Direction is Device relative Bus (other Devices).
  • For more informations, references and sources go to SCSI Technology

References

Category:Buses Connectors

 

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