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4-Port Serial Interface SPA Cables, Connectors, and Pinouts
Pin
10
11
12
13
The following table lists the EIA/TIA-530 DTE cable pinouts. Arrows indicate signal direction.
Note
Any pin not referenced is not connected.
Table 44: EIA/TIA-530 DTE Cable Pinouts (DB-25 Male Connector)
J1
Signal
J1-21
MODE_2
J1-23
MODE_0
J1-24
MODE_DCE
–
–
J1-1
O_TxD/RxD+
J1-14
O_TxD/RxD–
J1-5
I_RxD/TxD+
J1-18
I_RxD/TxD–
J1-8
O_RTS/CTS+
J1-9
O_RTS/CTS–
J1-11
I_CTS/RTS+
J1-10
I_CTS/RTS–
J1-12
I_DSR/DTR+
J1-25
I_DSR/DTR–
J1-6
IO_DCD/DCD+
J1-19
IO_DCD/DCD–
J1-3
IO_TxC/RxC+
J1-16
IO_TxC/RxC–
J1-4
I_RxC/TxCE+
J1-17
I_RxC/TxCE–
Cisco ASR 9000 Series Aggregation Services Router SIP and SPA Hardware Installation Guide
70
Signal
I_CTS/RTS-
I_CTS/RTS+
I_DSR/DTR+
B_LL/LL+
Description
Direction
Local connections
–
Shield
–
Twisted pair no. 5
——>
——>
Twisted pair no. 9
<——
<——
Twisted pair no. 1
——>
——>
Twisted pair no. 4
<——
<——
Twisted pair no.
<——
10
—
Twisted pair no.
<——
11
<——
Twisted pair no. 7
<——
<——
Twisted pair no. 8
<——
<——
Overview: Cisco ASR 9000 Series Router Shared Port Adapters
Pin
Signal
23
MODE0
24
MODEDCE
25
I_DSR/DTR-
26
GND
J2
Signal
–
–
J2-1
Shield GND
J2-2
BA(A), TxD+
J2-14
BA(B), TxD–
J2-3
BB(A), RxD+
J2-16
BB(B), RxD–
J2-4
CA(A), RTS+
J2-19
CA(B), RTS–
J2-5
CB(A), CTS+
J2-13
CB(B), CTS–
J2-6
CC(A), DSR+
AC; GND
J2-8
CF(A), DCD+
J2-10
CF(B), DCD–
J2-15
DB(A), TxC+
J2-12
DB(B), TxC–
J2-17
DD(A), RxC+
J2-9
DD(B), RxC–
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