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FTM-9712S-SL20 Datasheet(PDF) 9 Page - Source Photonics, Inc. |
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FTM-9712S-SL20 Datasheet(HTML) 9 Page - Source Photonics, Inc. |
9 / 15 page SC Receptacle SFP with Spring-latch GE-PON OLT Transceiver FTM-9712S-SL20(E)(G) 20km transmission with Monitoring Function Preliminary Data Sheet Apr.28, 2006 Fiberxon Proprietary and Confidential, Do Not Copy or Distribute Doc No: DS3513009-1c Page 9 of 15 module with a 4.7-10 KΩ 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 Note 3: MOD-DEF0,1,2. 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-DEF0 is grounded by the module to indicate that the module is present MOD-DEF1 is the clock line of two-wire serial interface for serial ID MOD-DEF2 is the data line of two-wire serial interface for serial ID Note 4: Reserved for module tuning and compulsive for system designer that any circuit doesn’t be connected to it. Note 5: 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. Note 6: 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 300 mA. Recommended host board power supply filtering is shown in figure 4. 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. Note 7: These are the differential receiver outputs. They are DC coupled 100 Ω differential lines which should be terminated with 100 Ω (differential) at the user SERDES. (See Recommended Interface Circuit) Note 8: 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. (See Recommended Interface Circuit) |
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