23
signal that form a data bus. DB(7) is the most significant bit and has the
highest priority during the Arbitration phase. Bit number, significance, and
priority decrease downward to DB(0). A data bit is defined as one when the
signal value is true and is defined as zero when the signal value is false. Data
parity DB(P) shall be odd.
Table 7-1. SCSI connector assignments
low-voltage differential (LVD)/16-bit SCSI (wide)
Signal Name
Pin Number
Signal Name
Pin Number
+DB(12)
1
-DB(12)
35
+DB(13)
2
-DB(13)
36
+DB(14)
3
-DB(14)
37
+DB(15)
4
-DB(15)
38
+DB(P1)
5
-DB(P1)
39
+DB(0)
6
-DB(0)
40
+DB(1)
7
-DB(1)
41
+DB(2)
8
-DB(2)
42
+DB(3)
9
-DB(3)
43
+DB(4)
10
-DB(4)
44
+DB(5)
11
-DB(5)
45
+DB(6)
12
-DB(6)
46
+DB(7)
13
-DB(7)
47
+DB(P)
14
-DB(P)
48
CHAPTER 7: SCSI Technical Information
