1.25G switch SFP module

1.25G SFP optical moduleApplicationsSwitch to Switch interface Switched backplane applications Router/Server interfac ATM SONT/SDH/PDH FDDI Fiber Channel Other optical transmission systems StandardCompatible with SFP MSACompatible with IEEE 802.3zCompatible with ANSI specifications for Fibre ChannelCompatible with FCC 47 CFR Part 15, Class BCompatible with FDA 21 CFR 1040.10 and 1040.11, Class ICompatible with Telcordia GR-468-CORERoHS complianceDescriptionThe SFP transceiver is high performance, cost effective module supporting dual data-rate of 1.25Gbps/1.0625Gbps and from 10km to 20km transmission distance with SMF.The transceiver consists of two sections: The transmitter section incorporates a FP laser. And the receiver section consists of a PIN photodiode integrated with a trans-impedance preamplifier (TIA). All modules satisfy class I laser safety requirements.The optical output can be disabled by a TTL logic high-level input of Tx Disable. Tx Fault is provided to indicate that degradation of the laser. Loss of signal (LOS) output is provided to indicate the loss of an input optical signal of receiver.The standard serial ID information compatible with SFP MSA describes the transceiver’s capabilities, standard interfaces, manufacturer and other information. The host equipment can access this information via the 2-wire serial CMOS EEPROMprotocol. For further information, please refer to SFP Multi-Source Agreement (MSA).The SFP transceivers are compatible with RoHS. Regulatory ComplianceThe transceivers have been tested according to American and European product safety and electromagnetic compatibility regulations (See Table 1). For further information regarding regulatory certification, please refer to Howfflink regulatory specification and safety guidelines, or contact with Howfflink, Inc.EEPROM Information: The serial SFP module contains an EEPROM. It provides access to sophisticated identification information that describes the transceiver’s capabilities, standard interfaces, manufacturer. The serial interface uses the 2-wire serial CMOS EEPROM protocol defined for the ATMEL AT24C01A/02/04 family of components. When the serial protocol is activated, the host generates the serial clock signal (SCL MOD_DEF1). The positive edge clocks data into those segments of the EEPROM that are not write-protected within the SFP transceiver. The negative edge clocks data from the SFP transceiver. The serial data signal (SDA MOD_DEF2) is bi-directional for serial protocol activation. The memories are organized as a series of 8-bit data words that can be addressed individually or sequentially.The module provide diagnostic information about the present operating conditions. The transceiver generates this diagnostic data by digitization of internal analog signals. Calibration and alarm/warning threshold power monitoring, bias current monitoring, supply voltage monitoring and temperature monitoring all are implemented. The diagnostic data are raw A/D values and must be converted to real world units using calibration constants stored in EEPROM locations 56-95 at wire serial bus address A2h. The diital diagnostic memory map specific data field define ad following.