Specifications
ASMi-52CQ Ver. 2.12 LRSI-F-18 and LRSI-F-19 Connections A-1
Appendix A
Pinouts
A.1 LRSI-F-18 and LRSI-F-19 Connections
DCE Connector Pinout for LRSI-F-18 and LRSI-F-19
The DCE interface of the LRSI-F-18 and LRSI-F-19 modules terminates in a 68-pin
SCSI connector (see
Table
A-1 for connector pinout).
Table
A-1. Pin Assignment of the DCE Connector for LRSI-F-18 and LRSI-F-19
Type V.35 RS-530 X.21 SCSI 68-pin
Connector 34-Pin DB-25 DB-15
Function Pin ID Circuit Pin Circuit Pin ID CH-1 CH-2 CH-3 CH-4
Ground
Protective Ground A FGND 101
1 1 SHIELD 8 24 36 52
Signal Ground B SGND 102
7 AB 8 GND 18 34 46 62
Data
Transmitted Data P TD(A) 103
S TD(B) 103
2
14
BA(A)
BA(B)
2 T(A)
9 T(B)
10
14
22
26
38
42
50
54
Received Data R RD(A) 104
T RD(B) 104
3
16
BB(A)
BB(B)
4 R(A)
11 R(B)
3
1
21
25
49
45
66
67
Control
Request to Send C RTS 105 4
19
CA(A)
CA(B)
3 CA(A)
10 CA(B)
6
7
19
23
35
39
51
55
Carrier Detect F DCD 109 8
10
CF(A)
CF(B)
5 (A)
12 (B)
11
15
27
31
43
47
59
63
Timing
External Transmit
Clock
U SCTE(A) 113
W SCTE(B) 113
24
11
DA(A)
DA(B)
7 (A)
14 (B)
16
20
28
32
44
48
56
58
Transmit Clock Y SCT(A) 114
AA SCT(B) 114
15
12
DB(A)
DB(B)
6 S(A)
13 S(B)
4
2
13
17
57
53
64
68
Receive Clock V SCR(A) 115
X SCR(B) 115
17
9
DD(A)
DD(B)
– 5
9
29
33
41
37
65
61