SFF-8472 V9.4协议

光纤通讯用协议 This document defines an enhanced digital diagnostic monitoring interface for optical transceivers that allows real time access to device operating parameters. It also adds new options to the previously defined serial ID memory map that accommodate new transceiver types that were not considered in the SFP MSA or GBIC documents. The interface is an extension of the serial ID interface defined in the GBIC specification as well as the SFP MSA. Both specifications define a 256 byte memory map in EEPROM which 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 interface is backward compatible with both the GBIC specification and the SFP MSA.