Cables and Connectors
Serial host interface specifications
MAX 3000 Installation and Basic Configuration Guide
C-35
.
Note:
To manufacture an RS-449 cable for Cisco routers, use the wiring list shown in
Table C-26 and connect the following DB-37 pins to SGND:
•
DSR-(pin 29)
•
CD-(pin 31)
•
CTS-(pin 27)
Table C-26. Pinouts for RS-449 cable to generic serial host
Pair #
Signal
(MAX)
MAX male DB-44
(MAX)
Host female DB-37
1
FGND
1
1
2
SD+
SD-
29
30
4
22
3
RD+
RD-
40
39
6
24
4
ST+
ST-
42
41
5
23
5
RT+
RT-
37
38
8
26
6
DSR
DCD/C
TS
6
36
11
9, 13*
7
RTS
RI
7
43
7
15
8
DTR
SGND
8
25
12
19, 20, 37*
9
TT+
TT-
31
32
17
35
10
RX/SEL
20, 28*
* Pin positions separated by commas are jumped to each other.
