IBM INTELLISTATION E PRO 6204 User Manual page 97

Setting SCSI IDs: Each SCSI device connected to a SCSI controller must have a
unique SCSI ID. This ID enables the SCSI controller to identify the device and ensure
that different devices on the same SCSI channel do not attempt to transfer data
simultaneously. SCSI devices that are connected to different SCSI channels can have
duplicate SCSI IDs. Refer to the information that is provided with the device for
instructions on setting its SCSI ID. With a SCSI adapter installed in your computer,
you can use its 68-pin SCSI connector to connect different types of SCSI devices.
Table 10. SCSI connector-pin assignments.
Pin Signal Pin
1 +DB (12) 18
2 +DB (13) 19
3 +DB (14) 20
4 +DB (15) 21
5 +DB (P1) 22
6 +DB (0) 23
7 +DB (1) 24
8 +DB (2) 25
9 +DB (3) 26
10 +DB (4) 27
11 +DB (5) 28
12 +DB (6) 29
13 +DB (7) 30
14 +DB (P) 31
15 GROUND 32
16 DIFFSENS 33
17 TERMPWR 34
To install SCSI devices, you must have an optional PCI SCSI adapter installed. Refer
to the information that is provided with the device for instructions to set its SCSI ID.
34
68
Signal Pin
TERMPWR 35 –DB (12)
RESERVED 36 –DB (13)
GROUND 37 –DB (14)
+ATN 38 –DB (15)
GROUND 39 –DB (P1)
+BSY 40 –DB (0)
+ACK 41 –DB (1)
+RST 42 –DB (2)
+MSG 43 –DB (3)
+SEL 44 –DB (4)
+C/D 45 –DB (5)
REQ 46 –DB (6)
+I/O 47 –DB (7)
+DB (8) 48 –DB (P)
+DB (9) 49 GROUND
+DB (10) 50 GROUND
+DB (11) 51 TERMPWR
1
35
Signal Pin Signal
52 TERMPWR
53 GROUND
54 GROUND
55 –ATN
56 GROUND
57 –BSY
58 –ACK
59 –RST
60 –MSG
61 –SEL
62 –C/D
63 –REQ
64 –I/O
65 –DB (8)
66 –DB (9)
67 –DB (10)
68 –DB (11)
Chapter 5. Installing options
81