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Product Datasheet

SFP Module EEPROM Information and Management

The SFP modules implement the 2-wire serial communication protocol as defined in the SFP -8472. The

serial ID information of the SFP modules and Digital Diagnostic Monitor parameters can be accessed

through the I2C interface at address A0h and A2h. The memory is mapped in Table 1. Detailed ID

information (A0h) is listed in Table 2. And the DDM specification at address A2h. For more details of the

memory map and byte definitions, please refer to the SFF-8472, “Digital Diagnostic Monitoring Interface for

Optical Transceivers”. The DDM parameters have been internally calibrated.

Table 1- Digital Diagnostic Memory Map (Specific Data Field Descriptions)