10G DWDM SFP+ 40km Optical Transceivers
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Chengdu Ruidian Optical Communication Equipment Co., Ltd.
10G DWDM SFP+ 40km Optical Transceivers
Product Features
1.10Gb/s serial optical interface compliant to 802.3ae 10GBASE-ER/EW
2.Electrical interface compliant to SFF-8431specifications for enhanced 8.5 and 10 Gigabit small form factor pluggable module “SFP+”
3.2-wire interface for management specification compliant with SFF 8472
digital diagnostic monitoring interface for optical transceivers Eye Safety
Designed to meet Laser Class1 Compliant with IEC60825-1
4.Operating case temperature: -5 to 70 °C
5.Metal enclosure for low EMI
6.Low power consumption advanced firmware allow customersystem
encryption information to be stored in transceiver
7.Single +3.3V Power Supply
Applications
1.SONET OC-192 IR-1
2.Switch to Switch interface
3.Switched backplane applications
4.Router/Server interface
5. Other optical transmission systems
Standard
1.SFP+ MSA compliant
2.IEEE802.3ae-2002 compliant
3.GR-253-CORE compliant
4.RoHS compliant
Description
10G DWDM SFP+ transceivers are designed for 10G Ethernet 10G BASE-ER/EW per 802.3ae , and it can support data-rate from 1.25Gb/s to 11.1Gb/s.Digital diagnostics are available via I2C interface as specified in the SFP+ MSA.
Pin Assignment:
Pin Description:
Notes: Plug Seq.: Pin engagement sequence during hot plugging.
1.TX Fault is an open collector output, which should be pulled up with a 4.7k~10kΩ resistor on the host board to a voltage between 2.0V and Vcc+0.3V. Logic 0 indicates normal operation; logic 1 indicates a laser fault of some kind. In the low state, the output will be pulled to less than 0.8V.
2.TX Disable is an input that is used to shut down the transmitter optical output. It is pulled up within the module with a 4.7 ¨C 10 K resistor. Its states are:
Low (0 to 0.8V): Transmitter on
(>0.8, < 2.0V): Undefined
High (2.0 to 3.465V): Transmitter Disabled
Open: Transmitter Disabled
3.Mod-Def 0,1,2. These are the module definition pins. They should be pulled up with a 4.7K to 10K resistor on the host board. The pull-up voltage shall be VccT or VccR
Mod-Def 0 is grounded by the module to indicate that the module is present
Mod-Def 1 is the clock line of two wire serial interface for serial ID
Mod-Def 2 is the data line of two wire serial interface for serial ID
4.LOS (Loss of Signal) is an open collector/drain output, which should be pulled up with a 4.7K to 10K resistor. Pull up voltage between 2.0V and VccT, R+0.3V. When high, this output indicates the received optical power is below the worst-case receiver sensitivity (as defined by the standard in use). Low indicates normal operation. In the low state, the output will be pulled to <0.8V.
5.RD-/+: These are the differential receiver outputs. They are AC coupled 100 differential lines which should be terminated with 100 (differential) at the user SERDES. The AC coupling is done inside the module and is thus not required on the host board. The voltage swing on these lines will be between 370 and 2000 mV differential (185 to 1000 mV single ended) when properly terminated.
6.TD-/+: These are the differential transmitter inputs. They are AC-coupled, differential lines with 100 differential termination inside the module. The AC coupling is done inside the module and is thus not required on the host board. The inputs will accept differential swings of 500 to 2400 mV (250 to 1200 mV single-ended), though it is recommended that values between 500 and 1200 mV differential (250 to 600 mV single-ended) be used for best EMI performance.
Absolute Maximum Ratings
Electrical Characteristics (TOP = -5 to 70 °C)
Optical Characteristics (TOP = -5 to 70 °C)
Management Interface
SFP+ 2-wire serial interface is specified in the Chapter 4 of the SFP+ MSA specification. The SFP+ 2-wire serial interface is used for serial ID, digital diagnostics, and certain control functions. The 2-wire serial interface is mandatory for all SFP+ modules. The 2-wire serial interface address of the SFP+ module is 1010000X(A0h). In order to access to multiple modules on the same 2-wire serial bus, the SFP+ has a MOD_DESEL(module
deselect pin). This pin (which is pull high or deselected in the module) must beheld low by the host to select of interest and allow communication over 2-wire serial interface. The module must not respond to or accept 2-wire serial bus instructions unless it is selected.
SFP+ Management Interface
SFP+ Management interface is specified in the Chapter 5 of the SFP+ MSA specification. The Figure 1 shows the structure of the memory map. The normal 256 Byte address space is divided into lower and upper blocks of 128 Bytes. The lower block of 128 Byte is always directly available and is used for the diagnostics and control functions that must be accessed repeatedly. Multiple blocks of memories are available in the upper 128 Bytes of the address space. These are individually addressed through a table select Byte which the user enters into a location in the lower address space. The upper address space tables are used for less frequently accessed functions and control space for future standards
definition.
Typical Interface Circuit
Recommended power supply filter
Package Dimensions
Recommended PCB Layout:
Recommended Front Panel Layout Opening for LC