C. Cables and Pin Assignments
C-18
February 2001
8700-A2-GB25-10
85
PORT3_RD_L
Port 3
24
RD(B)
35
PORT3_RXC_H
Port 3
8
RT(A)
84
PORT3_RXC_L
Port 3
26
RT(B)
33
PORT3_TT_H
Port 3
17
TT(A)
82
PORT3_TT_L
Port 3
35
TT(B)
76
PORT3_RTS_H
Port 3
7
RS(A)
26
PORT3_RTS_L
Port 3
25
RS(B)
79
PORT3_CTS_H
Port 3
9
CS(A)
29
PORT3_CTS_L
Port 3
27
CS(B)
28
PORT3_LSD_H
Port 3
13
RR(A)
77
PORT3_LSD_L
Port 3
31
RR(B)
78
PORT3_DSR
Port 3
11
DM(A)
27
PORT3_DTR
Port 3
12
TR(A)
30
PORT3_TM
Port 3
18
TM
25
GND
Port 3
20
GND
75
PORT3_LL
Port 3
10
LL
80
GND
Port 3
19
GND
31
PORT3_RL
Port 3
14
RL
86
GND
Port 3
37
GND
—
—
—
—
Port 3
Port 3
29
20
DM(B)
GND
—
—
—
—
Port 3
Port 3
37
15
GND
IC
44
PORT4_TD_H
Port 4
4
SD(A)
93
PORT4_TD_L
Port 4
22
SD(B)
46
PORT4_TXC_H
Port 4
5
ST(A)
95
PORT4_TXC_L
Port 4
23
ST(B)
48
PORT4_RD_H
Port 4
6
RD(A)
97
PORT4_RD_L
Port 4
24
RD(B)
47
PORT4_RXC_H
Port 4
8
RT(A)
96
PORT4_RXC_L
Port 4
26
RT(B)
45
PORT4_TT_H
Port 4
17
TT(A)
Table C-9.
RS-449 Cable Pinouts (3 of 4)
100-Pin Plug
Net Name
DB37 Socket
Pin Number
Net Name