Cisco 1240 - A P P E N D I X B Connector and Cable Specifications; Serial Port

B-3
Cisco 1240 Connected Grid Router Hardware Installation Guide
OL-26223-04
Appendix B Connector and Cable Specifications
Connector Specifications
Serial Port
For detailed information about the combination ports, see the “Router Hardware Description” chapter.
6 MOD-DEF(0) Output Grounded in SFP, indicates SFP is present
7 Rate Select
1
––
8 LOS Output Loss of Receive optical signal indicator
9VeeR – GND
10 VeeR – GND
11 VeeR – GND
12 RD- Output Differential electrical output to PHY
13 RD+ Output Differential electrical output to PHY
14 VeeR – Gnd
15 VccR – 3.3V
16 VccT – 3.3V
17 VeeT – GND
18 TD+ Input Differential input from PHY
19 TD- Input Differential input from PHY
20 VeeT – GND
1. Rate Select is an optional SFP input that controls receiver bandwidth when used with Fibre Channel applications. This pin is
unconnected.
Table B-4 SFP Port Specification (continued)
Pin Signal Name Input/Output Signal Description
Table B-5 Serial Port Specification
RS-232
1
1. The RS232 pinouts use the EIA-561 standard.
RS-485 Full Duplex RS-485 Half Duplex
Pin Signal Description (Abbreviation) DCE Signal Dir Signal Dir
1 DCE ready, ring indicator (DSR/RI) Output TX+ – TX/RX+ –
2 Received line signal detector (DCD) Output TX- – TX/RX- –
3 DTE ready (DTR) Input Not used – Not used –
4 Signal ground (COM) – COM – COM –
5 Received data (RxD) Output Not used Output Not used Bidirectional
6 Transmitted data (TxD) Input RX+ Input Not used –
7 Clear to send (CTS) Output Not used Output Not used Bidirectional
8 Request to send (RTS) Input RX- Input Not used –