• Single fiber bi-directional data links asymmetric TX 1250Mbps / RX 1250Mbps GEPON ONU application with GEPON MAC function.
• SC/UPC receptacle SFP with GEPON ONU MAC inside, “Plug-and-play” via auto-discovery and configuration
• 1310nm FP burst mode transmitter, 1490nm TIA continuous mode receiver
• Single 3.3V power supply
• Digital diagnostic monitor be retrieved by OLT remotely
• SFP MSA compliance
• Low EMI and excellent ESD protection
• Class I laser safety standard IEC-60825 compliant
• RoHS compliance
• EPON ONU compatible
• Complies with SFP Multi-Source Agreement (MSA) SFF-8074i
• Complies with IEEE802.3AH
• Gigabit-capable Passive Optical Networks (GEPON)
• The product is an MSA-compliant SFP that incorporates not just the optics for an ONU, but all of the electronics need as well. It is a “PON on a Stick” that an entire FTTH ONU in a slightly oversized SFP. It can be plugged into networking equipment. Allowing the data interfaces on a switch, router, etc. to be customized for different fiber environments and distance requirements
GEPON ONU STICK
v> Figure 1 SFP Transceiver Electrical Pad Layout
1) TX Fault is an open collector/drain output, which should be pulled up with a 4.7K – 10KΩ resistor on the host board. Pull up voltage between 2.0V and VccT, R+0.3V. When high, output indicates a laser fault of some kind. Low indicates normal operation. In the low state, the output will be pulled to < 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 – 10KΩ resistor. Its states are: Low (0 – 0.8V): Transmitter on (>0.8, < 2.0V): Undefined High (2.0 – 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 – 10KΩ 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 – 10KΩ 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) VeeR and VeeT may be internally connected within the SFP module. 6) RD-/+: These are the differential receiver outputs. They are AC coupled 100 Ω differential lines which should be terminated with 100 Ω (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 – 1000 mV single ended) when properly terminated. 7) VccR and VccT are the receiver and transmitter power supplies. They are defined as 3.3V ±5% at the SFP connector pin. Maximum supply current is 600 mA. Recommended host board power supply filtering is shown below. Inductors with DC resistance of less than 1Ω=should be used in order to maintain the required voltage at the SFP input pin with 3.3V supply voltage. When the recommended supply filtering network is used, hot plugging of the SFP transceiver module will result in an inrush current of no more than 30 mA greater than the steady state value. VccR and VccT may be internally connected within the SFP transceiver module. 8) TD-/+: These are the differential transmitter inputs. They are AC-coupled, differential lines with 100Ω 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 – 2400 mV (250 – 1200 mV single-ended), though it is recommended that values between 500 and 1200 mV differential (250 – 600 mV single-ended) be used for best EMI performaNCE
v> SFP ONU uses the two wire serial bus to access two blocks of 256-byte EEPROM address 1010000X (A0h) , A0h stores static information including product and vendor IDs . The below figure shows the detail descriptions of A0h . All this information is not only accessible by a local host equipment into which the PON Stick is plugged, The diagnostic information about the module’s present operating can only be retrieved by OLT remotely through PON OAM messages.
v> Warns 1. Handling Precautions: This device is susceptible to damage as a result of electrostatic discharge (ESD). A static free environment is highly recommended. Follow guidelines according to proper ESD procedures. 2. Laser Safety: Radiation emitted by laser devices can be dangerous to human eyes. Avoid eye exposure to direct or indirect Radiation.
EPON STICK EPON ONU STICK
GPON STICK GPON ONU STICK