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Appendix B
Connector and Cable Specifications
SFP Ports
SFP Interface—Combination Port (SFP and GE Ethernet)
For detailed information about the combination ports, see the chapter
Table B-4
Pin
1
2
3
4
5
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.
OL-26438-02
SFP Port Specification
Signal Name
Input/Output
VeeT
–
TxFault
Output
TxDisable
Input
MOD-DEF(2)
Bidir
MOD-DEF(1)
Input
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
–
This pin is unconnected.
Signal Description
GND
Connects to GPIO
Driven from GPIO
Bidirectional. Connects to I2C data
Connects to I2C Clock
Grounded in SFP, indicates SFP is present
–
Connects to GPIO
GND
GND
GND
Connects to PHY
Connects to PHY
Gnd
3.3V
3.3V
GND
Driven from PHY
Driven from PHY
GND
Cisco 1120 Connected Grid Router Hardware Installation Guide
Connector Specifications
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Description.
B-3
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