Chapter 3
External Connectors
Connector Pinouts
31
SCSI Port, Ultra 3, 68-Pin
Two Ultra 3, 68-pin SCSI connectors are located on the host bus adapter (HBA) located in PCI slot 1. The
upper connector supports SCSI channel A and the lower connector supports SCSI channel B.
Figure 3-7 SCSI Port, Ultra 3, 68-Pin
Table 3-6 SCSI Port Pinouts
Pin Number Signal Description Pin Number Signal Description
1 S1 (+DB 12) 35 S35 (-DB 12)
2 S2 (+DB 13) 36 S36 (-DB 13)
3 S3 (+DB 14) 37 S37 (-DB 14)
4 S4 (+DB 15) 38 S38 (-DB 15)
5 S5 (+DB P1) 39 S39 (-DB P1)
6 S6 (+DB 0) 40 S40 (-DB 0)
7 S7 (+DB 1) 41 S41 (-DB 1)
8 S8 (+DB 2) 42 S42 (-DB 2)
9 S9 (DB 3) 43 S43 (-DB 3)
10 S10 (+DB 4) 44 S44 (-DB 4)
11 S11 (+DB5) 45 S45 (-DB 5)
12 S12 (+DB 6) 46 S46 (-DB 6)
13 S13 (+DB 7) 47 S47 (-DB 7)
14 S14 (+DB P) 48 S48 (-DB P)
15 S15 49 S49
16 S16 (DIFFSENS) 50 S50
17 S17 (TERMPWR) 51 S51 (TERMPWR)
18 S18 (TERMPWR) 52 S52 (TERMPWR)
19 S19 (RESERVED) 53 S53 (RESERVED)
20 S20 54 S54
35
1
68
34
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