SCSI-II External Hi D-Sub (Differential)

Pinout

50 PIN HI-DENSITY D-SUB FEMALE at the controller & devices.

50 PIN HI-DENSITY D-SUB MALE at the cable.

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

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