A P P E N D I X B Connector And Cable Specifications; Serial Port - Cisco 1240 Hardware Installation Manual

Appendix B Connector and Cable Specifications
Table B-4
Pin
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1. Rate Select is an optional SFP input that controls receiver bandwidth when used with Fibre Channel applications. This pin is

Serial Port

For detailed information about the combination ports, see the
Table B-5 Serial Port Specification
1
RS-232
Pin Signal Description (Abbreviation)
1 DCE ready, ring indicator (DSR/RI)
2 Received line signal detector (DCD)
3 DTE ready (DTR)
4 Signal ground (COM)
5 Received data (RxD)
6 Transmitted data (TxD)
7 Clear to send (CTS)
8 Request to send (RTS)
1. The RS232 pinouts use the EIA-561 standard.
OL-26223-04
SFP Port Specification (continued)
Signal Name Input/Output
MOD-DEF(0) Output
1
Rate Select –
LOS Output
VeeR –
VeeR –
VeeR –
RD- Output
RD+ Output
VeeR –
VccR –
–
VccT
VeeT –
TD+ Input
TD- Input
–
VeeT
unconnected.
DCE
Output
Output
Input
–
Output
Input
Output
Input
Signal Description
Grounded in SFP, indicates SFP is present
–
Loss of Receive optical signal indicator
GND
GND
GND
Differential electrical output to PHY
Differential electrical output to PHY
Gnd
3.3V
3.3V
GND
Differential input from PHY
Differential input from PHY
GND
"Router Hardware Description"
RS-485 Full Duplex
Signal Dir
TX+ –
TX- –
Not used –
COM –
Not used Output
RX+ Input
Not used Output
RX- Input
Cisco 1240 Connected Grid Router Hardware Installation Guide
Connector Specifications
chapter.
RS-485 Half Duplex
Signal Dir
TX/RX+ –
TX/RX- –
Not used –
COM –
Not used Bidirectional
Not used –
Not used Bidirectional
Not used –
B-3