DATA SHEET: Transceivers

Transcription

1 PROLABS 3CSFP92-C 1.25GBd SFP (Small Form Pluggable) Long Wavelength (1310nm) Transceiver 3CSFP92-C Overview ProLabs s 3CSFP92-C SFP optical transceivers are based on Gigabit Ethernet IEEE standard and Fiber Channel FC-PI Rev.5.0 and provide a quick and reliable interface for the GE/FC applicationin addition, they comply with the Small Form Factor Pluggable Multi Sourcing Agreement (MSA). Product Features l Up to 1.25 GBd bi-directional data links l Compliant with IEEE 802.3z Gigabit Ethernet and 1000BASE-LX l Compliant with SFP MSA l Hot-pluggable SFP footprint l 1310nm Fabry-Perot laser transmitter l Duplex LC connector l Up to 10-20km on 9/125um SMF l Single power supply 3.3 l RoHS Compliance l Class 1 laser product complies with EN l Operating temperature range: 0 to 70. Applications l 1.25 GBd Gigabit Ethernet l GBd Fiber Channel l Compatible with 3CSFP92 Ordering Information Part Number 3CSFP92-C Description GE/FC SFP 1310nm LC Connectors 10km on SMF. General Specifications Data Rate DR 1.25 IEEE GBd FC-PI-2 Rev 5 Bit Error Rate BER Operating Temperature T OP 0 70 Case temperature Storage Temperature T STO Ambient temperature Supply Current I S ma For electrical power interface Input oltage CC imum oltage MAX For electrical power interface

2 Optical Characteristics Transmitter Output Optical Power PTX Optical Center Wavelength λc Optical Modulation Amplitude OMA 174 ER Δλ TRF_IN RIN TX_ΔDJ TX_ΔTJ 9 PRX λc RX_SEN1 RX_SEN ORL 12 Extinction Ratio Spectral Width (RMS) Optical Rise/Fall Time (20% - 80%) Relative Intensity Noise Deterministic Jitter Contribution Total Jitter Contribution Optical Characteristics Receiver Optical Receiver Power Optical Center Wavelength Receiver 1.063GBd Receiver 1.25GBd Stressed Rx 1.25GBd Optical Return Loss Receiver Electrical 3dB Upper cutoff frequency Loss of Signal-Asserted Loss of Signal-Deasserted Loss of Signal-Hysteresis PLOS_A PLOS_D Electrical Characteristics Receiver Single ended data output swing OUT_PP Data output rise/fall time (20%-80%) TR LOS Fault LOS_Fault LOS Normal LOS_normal Power Supply Rejection Deterministic Jitter Contribution Total Jitter Contribution PSR RX_ΔDJ RX_ΔTJ nm db 1500 MHz 19 db 250 CC 1.3 EE 300 CC 0. 5 EE 400 Class 1 Product Equivalent extinction ratio specification for FC db nm db/hz nm uw 0.5 Electrical Characteristics Transmitter Input differential impedance RIN Single ended data input swing IN_PP Transmit disable voltage D Transmit enable voltage EN Transmit disable assert time Average FC-PI-2 Rev.5 IEEE IEEE Non condensing 1200 CC EE Ω m us CC_HO m ST EE mpp

3 Block Diagram of Transceiver TX_FAULT TX_DISABLE TX_DATA TX_DATA\ ELECTRICAL SUBASSEMBLY Safety Control LD Driver OPTICAL SUBASSEMBLY RX_DATA RX_DATA\ RX_LOS MOD_DEF2 MOD_DEF1 MOD_DEF0 Limiting Amp LOS Detect MOD DEF Micro Controller PRE AMP DUPLEX LC RECEPTACL E OPTICAL SUBASSEMBLY Transmitter Section The FP driver accept differential input data and provide bias and modulation currents for driving a laser. An automatic power-control (APC) feedback loop is incorporated to maintain a constant average optical power nm FP in an eye safe optical subassembly (OSA) mates to the fiber cable. TX_DISABLE The TX_DISABLE signal is high (TTL logic 1 ) to turn off the laser output. The laser will turn on within 1ms when TX_DISABLE is low (TTL logic 0 ). TX_FAULT When the TX_FAULT signal is high, output indicates a laser fault of some kind. Low indicates normal operation. Receiver Section The receiver utilizes a PIN detector integrated with a trans-impedance preamplifier in an OSA. This OSA is connected to a Limiting Amplifier which providing post-amplification quantization, and optical signal detection. The limiting Amplifier is AC-coupled to the transimpedance amplifier, with internal 100Ω differential termination. Receive Loss (RX_LOS) The RX_LOS is high (logic 1 ) when there is no incoming light from the companion transceiver. This signal is normally used by the system for the diagnostic purpose. The signal is operated in TTL level. Controller Section The micro controller unit monitors the operation information of LD driver and Limiting Amplifier. And report these status to the customer.

4 Dimensions ALL DIMENSIONS ARE ±0.2mm UNLESS OTHERWISE SPECIFIED UNIT: mm

5 PCB Layout Recommendation

6 Electrical Pad Layout Towards ASIC Towards Bezel

7 Pin Assignment PIN # Description 1 EET Transmitter ground (common with receiver ground) Circuit ground is isolated from chassis ground 2 T FAULT Transmitter Fault. Not supported 3 T DIS Transmitter Disable. Laser output disable on high or open Disabled: T DIS >2 or open Enabled: T DIS <0.8 4 MOD_DEF (2) Module Definition 2. Data line for serial ID Should Be pulled up with 4.7k 10k ohm on host 5 MOD_DEF (1) Module Definition 1. Clock line for serial ID board to a voltage between 2 and MOD_DEF (0) Module Definition 0. Grounded within the module 7 Rate Select No connection required 8 LOS Loss of Signal indication. Logic 0 indicates normal operation 9 EER Receiver ground (common with transmitter ground) 10 EER Receiver ground (common with transmitter ground) 11 EER Receiver ground (common with transmitter ground) 12 RD Receiver Inverted DATA out. AC coupled 13 RD+ Receiver Non-inverted DATA out. AC coupled 14 EER Receiver ground (common with transmitter ground) 15 CCR Receiver power supply 16 CCT Transmitter power supply 17 EET Transmitter ground (common with receiver ground) 18 TD+ Transmitter Non-Inverted DATA in. AC coupled 19 TD Transmitter Inverted DATA in. AC coupled 20 EET Transmitter ground (common with receiver ground) LOS is open collector output Circuit ground is isolated from chassis ground Circuit ground is isolated from chassis ground References 1. IEEE standard IEEE Standard Department, Small Form Factor Pluggable (SFP) Transceiver Multi-Source Agreement (MSA), September Fiber Channel Draft Physical Interface Specification (FC-PI-2 Rev.5). 4. Fiber Channel Physical and Signaling Interface (FC-PH/PH2/PH3). Circuit ground is connected to chassis ground Circuit ground is connected to chassis ground