Hitachi HUS157336EL3600 User Manual
Page 36
Drawing No. Sheet No. Revision 5
K6602906
36/46
2003/6/12
Table 11.4 Pin assignment of SCSI Bus Connector C1 (SCA-2, LVD mode)
Signal Name
Connector contact No.
Signal Name
12V
1
41
GND(12V Return)
12V
2
42
GND(12V Return)
12V
3
43
GND(12V Return)
12V
4
44
MATED1 (Note 2)
Open
5
45
Open
Open
6
46
DIFFSENS
-DB(11)
7
47
+DB(11)
-DB(10)
8
48
+DB(10)
-DB(9)
9
49
+DB(9)
-DB(8)
10
50
+DB(8)
-I/O
11
51
+I/O
-REQ
12
52
+REQ
-C/D
13
53
+C/D
-SEL
14
54
+SEL
-MSG
15
55
+MSG
-RST
16
56
+RST
-ACK
17
57
+ACK
-BSY
18
58
+BSY
-ATN
19
59
+ATN
-DB(P0)
20
60
+DB(P0)
-DB(7)
21
61
+DB(7)
-DB(6)
22
62
+DB(6)
-DB(5)
23
63
+DB(5)
-DB(4)
24
64
+DB(4)
-DB(3)
25
65
+DB(3)
-DB(2)
26
66
+DB(2)
-DB(1)
27
67
+DB(1)
-DB(0)
28
68
+DB(0)
-DB(P1)
29
69
+DB(P1)
-DB(15)
30
70
+DB(15)
-DB(14)
31
71
+DB(14)
-DB(13)
32
72
+DB(13)
-DB(12)
33
73
+DB(12)
5V
34
74
MATED2 (Note 2)
5V
35
75
GND(5V Return)
5V
36
76
GND(5V Return)
Reserved
37
77
LED(with 0 ohm)
AUTO START (Note 1)
38
78
-DELAY START (Note 1)
-ID0 (Note 1)
39
79
-ID1 (Note 1)
-ID2 (Note 1)
40
80
-ID3 (Note 1)
Note 1 When this signal is held to ground, it is regarded as LOW. When this signal is open,
it is regarded as HIGH. It can be driven by open collector driver.
Do not pull up this signal.
Note 2 The MATED2 signal is tied to ground, and the MATED1 signal is pulled up to HIGH
level in the drive. When the drive detects the MATED1 signal is held to LOW, the
drive regards the connection has completed. When the drive detects the MATED1
signal is held to HIGH, it regards the connection is incomplete.