FG-TRAN-SFP+SR Fortinet 10-Gig transceiver, short range SFP+ module for all FortiG

HDV-1310-10D transceivers support the 2-wire serial communication protocol as defined in the SFP MSA1.

The standard SFP serial ID provides access to identification information that describes the transceiver's

capabilities, standard interfaces, manufacturer, and other information.

Additionally, TRANSCOM SFP+ transceivers provide a unique enhanced digital diagnostic monitoring interface,

which allows real-time access to device operating parameters such as transceiver temperature, laser bias

current, transmitted optical power, received optical power and transceiver supply voltage. It also defines a

sophisticated system of alarm and warning flags, which alerts end-users when particular operating parameters

are outside of a factory set normal range.

The SFP MSA defines a 256-byte memory map in EEPROM that is accessible over a 2-wire serial interface at

the 8 bit address 1010000X (A0h).The digital diagnostic monitoring interface makes use of the 8 bit address

1010001X (A2h), so the originally defined serial ID memory map remains unchanged.

The operating and diagnostics information is monitored and reported by a Digital Diagnostics Transceiver

Controller (DDTC) inside the transceiver, which is accessed through a 2-wire serial interface. When the serial

protocol is activated, the serial clock signal (SCL, Mod Def 1) is generated by the host. The positive edge

clocks data into the SFP transceiver into those segments of the E2PROM that are not write-protected. 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.