Pin Specifications for the Ports on the BA42B System
Table A–4 Pin Specifications for the External SCSI Connector
Contact
Signal Name
1
Contact
Signal Name
1
1
GROUND
26
TERMPWR
2
DB (0) L
27
RESERVED
3
GROUND
28
RESERVED
4
DB (1) L
29
GROUND
5
GROUND
30
GROUND
6
DB (2) L
31
GROUND
7
GROUND
32
ATN L
8
DB (3) L
33
GROUND
9
GROUND
34
GROUND
10
DB (4) L
35
GROUND
11
GROUND
36
BSY L
12
DB (5) L
37
GROUND
13
GROUND
38
ACK L
14
DB (6) L
39
GROUND
15
GROUND
40
RST L
16
DB (7) L
41
GROUND
17
GROUND
42
MSG L
18
DB (P) L
43
GROUND
19
GROUND
44
SEL L
20
GROUND
45
GROUND
21
GROUND
46
C/D L
22
GROUND
47
GROUND
23
RESERVED
48
REQ L
24
RESERVED
49
GROUND
25
OPEN
50
I/O L
1
The signal names ending with L are active low; the signal names ending with H are active high.
Pin Specifications for the Ports on the BA42B System A–9