Blogging about sfp transceivers information because this is what I’ve been studying lately. Get ready for something geeky.
The typical SFP dimensions are:
Height: 0.33 inches (8.5 mm)
Width: 0.53 inches (13.4 mm)
Depth: 2.22 inches (56.5 mm)
EEPROM information
The mini gbic SFP MSA defines a 256-byte memory map in EEPROM describing the transceiver’s capabilities, standard interfaces, manufacturer, and other information, which is accessible over IC interface at the 8-bit address 10100000X (A0h).
Digital Diagnostics Monitoring
Modern optical SFP transceivers support digital diagnostics monitoring (DDM) functions according to the industry-standard SFF-8472. This feature is also known as digital optical monitoring (DOM). This feature gives the end user the ability to monitor real-time parameters of the SFP, such as optical output power, optical input power, temperature, laser bias current, and transceiver supply voltage.
The diagnostic monitoring controller is available as I²C device at address 10100001X (A2h).
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