GPON OLT C+++ Optical Transceiver

Features

• Single fiber bi-directional data links asymmetric TX 2500Mbps/RX1250Mbps application
• 1490nm continuous-mode DFB laser transmitter and 1310nm burst-mode APD-TIA receiver
• Small Form Factor Pluggable package with SC/UPC Connector
• Single 3.3V power supply
• Digital diagnostic monitoring interface
• Low EMI and excellent ESD protection
• RoHS6 Compliance
• LVPECL compatible data input/output interface
• Class I laser safety standard IEC-60825 compliant
• LVTTL fast receiver Signal Detect (SD) indication response
• LVTTL transmitter disable control and transmitter laser fault alarm
• Digital burst RSSI function to monitor the input optical power level

Applications

• Gigabit Ethernet Passive Optical Networks (GPON)
• Gigabit-Capable Passive Optical Networks Class C+++ 60km 17~32dB attenuation range

Standards

• Complies with SFP Multi-Source Agreement (MSA) SFF-8074i
• Complies with IEEE 802.3ah
• Complies with FCC 47 CFR Part 15, Class B
• Complies with FDA 21 CFR 1040.10 and 1040.11 except for deviations pursuant to Laser Notice No. 50, dated June 24, 2007
• Complies with SFF-8472
• Compatible with TR-NWT-000870 4.1 ESD sensitivity classification Class2.
• Compatible with Telcordia GR-468-CORE 

Specification

Note 1: PRBS 2⁷-1@1.25Gbps, transmitter is operating, BER ≤1×10^-10

Figure 1 RSSI TIMING SEQUENCE 

Digital Diagnostic Monitoring Information

Note: The digital diagnostic monitoring interface defines 256-byte memory map in EEPROM, which makes use of the 8 bit address 1010001X (A2h). Please refer to the SFF-8472 Rev 10.2 for the detail information.

Pin definition

 Typical application Circuit

Figure 2 Typical Interface Circuit

EEPROM Memory Map

Figure 5 EEPROM Memory Map Specific Data Field Descriptions

EEPROM Serial ID Memory Contents

The optical transceiver contains an EEPROM. It provides access to sophisticated identification information that describes the transceiver’s capabilities, standard interfaces, manufacturer, and other information. When the serial protocol is activated, the host generates the serial clock signal (SCL, Mod Def 1). The positive edge clocks data into those segments of the EEPROM that are not writing protected within the SFP transceiver. The negative edge clocks data from the SFP transceiver. The serial data signal (SDA, Mod Def 2) is bi-directional for serial data transfer. The host uses SDA in conjunction with SCL to mark the start and end of serial protocol activation. The memories are organized as a series of 8-bit data words that can be addressed individually or sequentially.

The Module provides diagnostic information about the present operating conditions. The transceiver generates this diagnostic data by digitization of internal analog signals. Calibration and alarm/warning threshold data is written during device manufacture. Received power monitoring, transmitted 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 digital diagnostic memory map specific data fields define as following.

EEPROM Serial ID Memory Contents (2-Wire Address A0h)

Package Outline

Order information