C. Cables and Pin Assignments
8700-A2-GB25-10
February 2001
C-21
81
PORT3_TD_L
Port 3
9
TD(B)
36
PORT3_RD_H
Port 3
4
RD(A)
85
PORT3_RD_L
Port 3
11
RD(B)
35
PORT3_RXC_H
Port 3
6
RXC(A)
84
PORT3_RXC_L
Port 3
13
RXC(B)
33
PORT3_TT_H
Port 3
7
TT(A)
82
PORT3_TT_L
Port 3
14
TT(B)
76
PORT3_RTS_H
Port 3
3
RTS(A)
26
PORT3_RTS_L
Port 3
10
RTS(B)
28
PORT3_LSD_H
Port 3
5
RLSD(A)
77
PORT3_LSD_L
Port 3
12
RLSD(B)
80
GND
Port 3
8
GND
N/C
—
—
—
N/C
44
PORT4_TD_H
Port 4
2
TD(A)
93
PORT4_TD_L
Port 4
9
TD(B)
48
PORT4_RD_H
Port 4
4
RD(A)
97
PORT4_RD_L
Port 4
11
RD(B)
47
PORT4_RXC_H
Port 4
6
RXC(A)
96
PORT4_RXC_L
Port 4
13
RXC(B)
45
PORT4_TT_H
Port 4
7
TT(A)
94
PORT4_TT_L
Port 4
14
TT(B)
88
PORT4_RTS_H
Port 4
3
RTS(A)
38
PORT4_RTS_L
Port 4
10
RTS(B)
40
PORT4_LSD_H
Port 4
5
RLSD(A)
89
PORT4_LSD_L
Port 4
12
RLSD(B)
92
GND
Port 4
8
GND
N/C
—
—
—
N/C
49
37
CABLE_ID
GND
—
—
—
—
—
—
Table C-10. X.21 Cable Pinouts (2 of 3)
100-Pin Plug
Net Name
DB15 Socket
Pin Number
Net Name