B-3
Cisco 1120 Connected Grid Router Hardware Installation Guide
OL-26438-02
Appendix B Connector and Cable Specifications
Connector Specifications
SFP Ports
SFP Interface—Combination Port (SFP and GE Ethernet)
For detailed information about the combination ports, see the chapter
Router Hardware Description
.
Table B-4
SFP Port Specification
Pin
Signal Name
Input/Output
Signal Description
1
VeeT
–
GND
2
TxFault
Output
Connects to GPIO
3
TxDisable
Input
Driven from GPIO
4
MOD-DEF(2)
Bidir
Bidirectional. Connects to I2C data
5
MOD-DEF(1)
Input
Connects to I2C Clock
6
MOD-DEF(0)
Output
Grounded in SFP, indicates SFP is present
7
Rate Select
1
1.
Rate Select is an optional SFP input that controls receiver bandwidth when used with Fibre Channel applications.
This pin is unconnected.
–
–
8
LOS
Output
Connects to GPIO
9
VeeR
–
GND
10
VeeR
–
GND
11
VeeR
–
GND
12
RD-
Output
Connects to PHY
13
RD+
Output
Connects to PHY
14
VeeR
–
Gnd
15
VccR
–
3.3V
16
VccT
–
3.3V
17
VeeT
–
GND
18
TD+
Input
Driven from PHY
19
TD-
Input
Driven from PHY
20
VeeT
–
GND