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TRPE03AI1I000E1 Datasheet(PDF) 4 Page - OPLINK Communications Inc. |
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TRPE03AI1I000E1 Datasheet(HTML) 4 Page - OPLINK Communications Inc. |
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4 / 5 page  Oplink Communications, Inc. 21737-0969,Rev.A 2008-11-11 Example ofSFP host board schematic TR PE 0 3-E 1 Single Mode A pplication N otes Electrical Interface: All signal interfaces are compliant w ith the SFP MSA specification. The high speed DATA interface is differential AC-coupled internally w ith 1 F and can be directly connected to a 3.3V SERDES IC. All low speed control and sense output signals are open collector TTL compatible and should be pulled up w ith a 4.7 - 10k resistor on the host board. Loss of Signal (LOS): The Loss of Signal circuit monitors the level of the incoming optical signal and generates a logic H IG H w hen an insufficient photocurrent is produced. TX Fault: The output indicates LOW w hen the transmitter is operating normally,and H IG H w ith a laser fault including laser end-of-life. TX Fault is an open collector/drain output and should be pulled up w ith a 4.7 - 10k resistor on the host board. TX Fault is non-latching (automatically deasserts w hen fault goes aw ay). TX Disable: W hen the TX Disable pin is at logic H IG H ,the transmitter optical output is disabled (less than -45dBm). Serial Identification and Monitoring:The module definition of SFP is indicated by the three module definition pins, MOD_DEF(0),MOD_DEF(1)and MOD_DEF(2). U pon pow er up, MOD_DEF(1:2)appear as NC (no connection),and MOD_DEF(0) is TTL LOW . W hen the host system detects this condition, it activates the serial protocol (standard tw o-w ire I2C serial interface) and generates the serial clock signal (SCL). The positive edge clocks data into the EEPROM segments of the SFP that are not w rite protected,and the negative edge clocks data from the SFP. The serial data signal (SDA) is for serial data transfer. The host uses SDA in conjunction w ith SCL to mark the start and end of serial protocol activation. The supported monitoring functions are temperature,voltage,bias current,transmitter pow er,average receiver signal,all alarms and w arnings,and softw are monitoring of TX Fault/LOS. The device is internally calibrated. The data transfer protocol and the details of the mandatory and vendor specific data structures are defined in the SFP MSA, and SFF-8472,Rev. 9.4. Power Supply and Grounding:The pow er supply line should be w ell-filtered. All 0.1 F pow er supply bypass capacitors should be as close to the transceiver module as possible. 4 R:4.7 to 10k CAP Values in µF TRPE03-E1 18 19 3 TX DATA IN+ 15 1 H coi lorf erri t ebead m (<0. 2 seri esresi st ance) W 0. 1 TX DATA IN- TX Di sabl e 16 0. 1 + 10 50 l i ne W 1,9, 10, 11, 14, 17, 20 0. 1 + 10 to 50 load W Vcc 3. 3V RX DATA OUT+ 13 12 RX DATA OUT- 5 4 6 MOD_DEF(0) MOD_DEF(1) MOD_DEF(2) LOS to 50 load W 8 R 2 TX Faul t R R R Vcc 3. 3V 50 l i ne W 50 l i ne W 50 l i ne W R |
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