Adaptec 2740A User Manual - Page 88

standard X3T9.2/86-109 Revision 10h, Table

Get Adaptec 2740A - AHA Storage Controller Fast SCSI 10 MBps PDF manuals and user guides View all Adaptec 2740A manuals
Add to My Manuals
Save this manual to your list of manuals

Page 88 highlights

Specifications External SCSI Connector The external SCSI connector must be a shielded 50-pin high density (Alternative 1) connector, as specified in proposed ANSI standard X3T9.2/86-109 Revision 10h, Section 4, Figure 5. Table A-5 lists the pin assignments for the external connector. Table A-5. External Connector Pin Assignments Pin Signal Name 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 Open 14 Ground 15 Ground 16 Ground 17 Ground 18 Ground 19 Ground 20 Ground 21 Ground 22 Ground 23 Ground 24 Ground 25 Ground Pin Signal Name 26 -DB(0) 27 -DB(1) 28 -DB(2) 29 -DB(3) 30 -DB(4) 31 -DB(5) 32 -DB(6) 33 -DB(7) 34 -DB(P) 35 Ground 36 Ground 37 Reserved 38 Term Power (Fused) 39 Reserved 40 Ground 41 -ATN 42 Ground 43 -BSY 44 -ACK 45 -RST 46 -MSG 47 -SEL 48 -C/D 49 -REQ 50 -I/O Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. C (Page A-7) Print Spec Number: 491709-00 Rev C Current Date: 9/1/93 ECN Date: 9/14/93 A-7

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
External SCSI Connector
The external SCSI connector must be a shielded 50-pin high den-
sity (Alternative 1) connector, as specified in proposed ANSI
standard X3T9.2/86-109 Revision 10h, Section 4, Figure 5. Table
A-5 lists the pin assignments for the external connector.
Table A-5. External Connector Pin Assignments
Pin
Signal Name
Pin
Signal Name
1
Ground
26
-DB(0)
2
Ground
27
-DB(1)
3
Ground
28
-DB(2)
4
Ground
29
-DB(3)
5
Ground
30
-DB(4)
6
Ground
31
-DB(5)
7
Ground
32
-DB(6)
8
Ground
33
-DB(7)
9
Ground
34
-DB(P)
10
Ground
35
Ground
11
Ground
36
Ground
12
Ground
37
Reserved
13
Open
38
Term Power (Fused)
14
Ground
39
Reserved
15
Ground
40
Ground
16
Ground
41
-ATN
17
Ground
42
Ground
18
Ground
43
-BSY
19
Ground
44
-ACK
20
Ground
45
-RST
21
Ground
46
-MSG
22
Ground
47
-SEL
23
Ground
48
-C/D
24
Ground
49
-REQ
25
Ground
50
-I/O
Adaptec AHA-2740 Series User’s Manual
Stock Number:
510381-00
/
Rev. C
(Page A-7)
Print Spec Number:
491709-00 Rev C
Current Date:
9/1/93
ECN Date:
9/14/93
Specifications
A-7