SCSI Internal (Single-ended)

From HwB

SCSI=Small Computer System Interface

Based on an original design by Shugart Associates. SCSI was ratified in 1986.

Pinout

Idc50m.png

50 PIN IDC MALE at the controller & harddisk.

Idc50f.png

50 PIN IDC FEMALE at the cable.

Pin Name Dir Description
2 DB0 Arrowlr.png Data Bus 0
4 DB1 Arrowlr.png Data Bus 1
6 DB2 Arrowlr.png Data Bus 2
8 DB3 Arrowlr.png Data Bus 3
10 DB4 Arrowlr.png Data Bus 4
12 DB5 Arrowlr.png Data Bus 5
14 DB6 Arrowlr.png Data Bus 6
16 DB7 Arrowlr.png Data Bus 7
18 PARITY Arrowlr.png Data Parity (odd Parity)
20 GND Arrow.png Ground
22 GND Arrow.png Ground
24 GND Arrow.png Ground
26 TMPWR Arrowlr.png Termination Power
28 GND Arrow.png Ground
30 GND Arrow.png Ground
32 /ATN Arrowl.png Attention
34 GND Arrow.png Ground
36 /BSY Arrowlr.png Busy
38 /ACK Arrowl.png Acknowledge
40 /RST Arrowlr.png Reset
42 /MSG Arrowr.png Message
44 /SEL Arrowlr.png Select
46 /C/D Arrowr.png Control/Data
48 /REQ Arrowr.png Request
50 /I/O Arrowr.png Input/Output

Note: Direction is Device relative Bus (other Devices).

All odd-numbered pins, except pin 25, are connected to ground. Pin 25 is left open.

Contributions