IBM 86625RY Hardware Maintenance Manual - Page 200

SCSI port, Table 6. Keyboard and auxiliary-device port, pin-number assignments

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Table 6. Keyboard and auxiliary-device port pin-number assignments Pin Signal 1 Data 2 Not connected 3 Ground 4 +5 V dc 5 Clock 6 Not connected SCSI port: The server comes with a RAID controller on the system board, which provides two independent SCSI channels. A 16-bit (wide) SCSI cable connects the hot-swap backplane to one channel of the integrated RAID SCSI controller. Another SCSI cable connects the other channel of the controller to the SCSI connector on the rear of the server. To attach an external SCSI device to the server, connect an external SCSI cable from the SCSI device to the SCSI connector on the back of the server. Ensure that the last device on the external SCSI cable is terminated. Table 7 shows the pin-number assignments for the 68-pin SCSI connectors. Table 7. 68-pin SCSI port connector pin-number assignments Pin Signal 1 Ground 2 Ground 3 Ground 4 Ground 5 Ground 6 Ground 7 Ground 8 Ground 9 Ground 10 Ground 11 Ground 12 Ground 13 Ground 14 Ground 15 Ground 16 Ground 17 Terminal power 18 Terminal power 19 Reserved 20 Ground 21 Ground 22 Ground 23 Ground 24 Ground 25 Not connected 26 Ground 27 Ground 28 Ground 29 Ground 30 Ground 31 Ground 32 Ground 33 Ground 34 Ground Pin Signal 35 Data 12 36 Data 13 37 Data 14 38 Data 15 39 Data P1 40 Data 0 41 Data 1 42 Data 2 43 Data 3 44 Data 4 45 Data 5 46 Data 6 47 Data 7 48 Data P0 49 Reserved 50 -PRSN 51 Terminal power 52 Terminal power 53 Reserved 54 Ground 55 -Attention 56 Ground 57 -Busy 58 -Acknowledge 59 -Reset 60 -Message 61 -Select 62 -Control/Data 63 -Request 64 -Input/Output 65 Data 8 66 Data 9 67 Data 10 68 Data 11 192 Netfinity Server HMM

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SCSI port:
The server comes with a RAID controller on
the system board, which provides two independent SCSI
channels.
A 16-bit (wide) SCSI cable connects the
hot-swap backplane to one channel of the integrated RAID
SCSI controller.
Another SCSI cable connects the other
channel of the controller to the SCSI connector on the rear
of the server.
To attach an external SCSI device to the server, connect
an external SCSI cable from the SCSI device to the SCSI
connector on the back of the server.
Ensure that the last
device on the external SCSI cable is terminated.
Table 7
shows the pin-number assignments for the 68-pin SCSI
connectors.
Table 6. Keyboard and auxiliary-device port
pin-number assignments
Pin
Signal
1
Data
2
Not connected
3
Ground
4
+
5 V dc
5
Clock
6
Not connected
Table 7. 68-pin SCSI port connector pin-number
assignments
Pin
Signal
Pin
Signal
1
Ground
35
Data 12
2
Ground
36
Data 13
3
Ground
37
Data 14
4
Ground
38
Data 15
5
Ground
39
Data P1
6
Ground
40
Data 0
7
Ground
41
Data 1
8
Ground
42
Data 2
9
Ground
43
Data 3
10
Ground
44
Data 4
11
Ground
45
Data 5
12
Ground
46
Data 6
13
Ground
47
Data 7
14
Ground
48
Data P0
15
Ground
49
Reserved
16
Ground
50
-PRSN
17
Terminal power
51
Terminal power
18
Terminal power
52
Terminal power
19
Reserved
53
Reserved
20
Ground
54
Ground
21
Ground
55
-Attention
22
Ground
56
Ground
23
Ground
57
-Busy
24
Ground
58
-Acknowledge
25
Not connected
59
-Reset
26
Ground
60
-Message
27
Ground
61
-Select
28
Ground
62
-Control/Data
29
Ground
63
-Request
30
Ground
64
-Input/Output
31
Ground
65
Data 8
32
Ground
66
Data 9
33
Ground
67
Data 10
34
Ground
68
Data 11
192
Netfinity Server HMM