PCI Express Board User's Manual
Board Side Pin Assignments—Female SCSI VHDCI68
RS-232
Pin Signal Pin Signal Pin Signal Pin Signal Pin Signal Pin
1
RxD6
2
CTS6
3
4
RTS6
5
DCD6
6
DTR6
7
DSR6
8
TxD6
9
GND
10
TxD4
11
DSR4
12
DTR4
RS-422 and 4-wire RS-485
Pin
1
TxD6+(B)
5
TxD6-(A)
6
RxD6-(A)
8
RxD6+(B)
9
10
RxD4+(B)
12
RxD4-(A)
13
TxD4-(A)
17
TxD4+(B)
1
35
13
DCD4
14
RTS4
15
RI6
RI4
16
CTS4
17
RxD4
18
RxD2
19
CTS2
20
RI2
21
RTS2
22
DCD2
23
DTR2
24
DSR2
Signal
Pin
Signal
18
TxD2+(B)
22
TxD2-(A)
23
RxD2-(A)
25
RxD2+(B)
GND
26
GND
27
RxD0+(B)
29
RxD0-(A)
30
TxD0-(A)
34
TxD0+(B)
25
TxD2
37
26
GND
38
RTS7
27
39
TxD0
DCD7
28
40
DSR0
DTR7
29
DTR0
41
DSR7
30
DCD0
42
TxD7
31
RTS0
43
GND
32
RI0
44
TxD5
33
45
CTS0
DSR5
34
46
RxD0
DTR5
35
RxD7
47
DCD5
36
CTS7
48
RTS5
Pin
Signal
35
TxD7+(B)
39
TxD7-(A)
40
RxD7-(A)
42
RxD7+(B)
43
GND
44
RxD5+(B)
46
RxD5-(A)
47
TxD5-(A)
51
TxD5+(B)
5-3
Pin Assignments
34
68
RI7
49
RI5
50
CTS5
51
RxD5
52
RxD3
53
CTS3
54
RI3
55
RTS3
56
DCD3
57
DTR3
58
DSR3
59
TxD3
60
GND
Pin
Signal
52
TxD3+(B)
56
TxD3-(A)
57
RxD3-(A)
59
RxD3+(B)
60
GND
61
RxD1+(B)
63
RxD1-(A)
64
TxD1-(A)
68
TxD1+(B)
Signal
61
TxD1
62
DSR1
63
DTR1
64
DCD1
65
RTS1
66
RI1
67
CTS1
68
RxD1
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