19
Chapter 2
External Connectors
Standard SCSI
Table 2-6. SCSI Pin Signals
Pin Signal
Pin
Signal
Pin
Signal
Pin
Signal
1
S1 (+DB 12)
18
S18 (TERMPWR)
35
S35 (-DB 12)
52
S52 (TERMPWR)
2
S2 (-DB 13)
19
S19 (RESERVED)
36
S36 (-DB 13)
53
S53 (RESERVED)
3
S3 (+DB 14)
20
S20
37
S37 (-DB 14)
54
S54
4
S4 (+DB 15)
21
S21 (+ATN)
38
S38 (-DB 15)
55
S55 (-ATN)
5
S5 (+DB P1)
22
S22
39
S39 (-DB P1)
56
S56
6
S6 (+DB 0)
23
S23 (+BSY)
40
S40 (-DB 0)
57
S57 (-BSY)
7
S7 (+DB 1)
24
S24 (+ACK)
41
S41 (-DB 1)
58
S58 (-ACK)
8
S8 (+DB 2)
25
S25 (+RST)
42
S42 (-DB 2)
59
S59 (-RST)
9
S9 (DB 3)
26
S26 (+MSG)
43
S43 (-DB 3)
60
S60 (-MSG)
10
S10 (+DB 4)
27
S27 (+SEL)
44
S44 (-DB 4)
61
S61 (-SEL)
11
S11 (+DB 5)
28
S28 (+C/D)
45
S45 (-DB 5)
62
S62 (-C/D)
12
S12 (+DB 6)
29
S29 (+REQ)
46
S46 (-DB 6)
63
S63 (-REQ)
13
S13 (+DB 7)
30
S30 (+I/O)
47
S47 (-DB 7)
64
S64 (-I/O)
14
S14 (+DB P)
31
S31 (+DB 8)
48
S48 (-DB P)
65
S65 (-DB 8)
15
S15
32
S32 (+DB 9)
49
S49
66
S66 (-DB 9)
16
S16 (DIFFSENS) 33
S33 (DB 10)
50
S50
67
S67 (-DB 10)
17
S17 (TERMPWR) 34
S34 (DB 11)
51
S51 (TERMPWR) 68
S68 (-DB 11)
34
68
1
35