System and method of interface communication compatible with sfp+ optical module and qsfp+ switch

A method of interface communication compatible with SFP+ optical module and QSFP+ switch, comprising:

• setting an adapter card between the SFP+ optical module and the QSFP+ switch, wherein the adapter card comprises a set of SFP+ golden fingers that comply with the SFP+ protocol, a set of QSFP+ golden fingers that comply with the QSFP+ protocol, and a microcontroller unit;
• the adapter card communicates with the SFP optical module through the SFP+ golden fingers, and communicates with the QSFP switch through the QSFP+ golden fingers;
• extending and processing the pin information in the adapter card through the microcontroller unit, and converting the two different protocols, SFP+ and QSFP+, so that the module under the SFP+ protocol can respond under a port of QSFP+, so as to realize a data communication between the SFP+ optical module and the QSFP+ switch;
• wherein, extending and processing the pin information in the adapter card through the microcontroller unit, and converting the two different protocols of SFP+ and QSFP+, so that the module under the SFP+ protocol can respond under the port of QSFP+, comprising:
• realize software-level memory mapping compatibility and protocol conversion logic in the microcontroller unit;
• wherein, realize memory mapping compatibility is specifically as follows:
• divide two SRAM areas in the microcontroller unit, namely an SFP+ SRAM area and a QSFP+ SRAM area, the SFP+ SRAM area corresponds to the SFP+ optical module, and the QSFP+ SRAM area corresponds to the QSFP+ switch, the SFP+ SRAM area is allocated with protocol definition storage space A0 and A2, which are used to store various code-writing information and reporting information of the SFP+ optical module, and the QSFP+ SRAM area is allocated with protocol definition storage space A0;
• the A0 address of the SFP+ SRAM area comprises 256 byte spaces, wherein 0-127 byte spaces are defined as A0 LOW, used to store module identification information and manufacturer information of the SFP+ optical module, and 128-255 byte spaces are defined as A0 HIGH, used to store the module identification information of the SFP+ optical module;
• the A2 address of the SFP+ SRAM area comprises 256 byte spaces, wherein 0-127 byte spaces are defined as A2 LOW, used to store threshold information, a quantity of control signal and reporting information of the SFP+ optical module, 128-255 byte spaces are defined as A2 HIGH, used to store user-defined information of the SFP+ optical module;
• the A0 address of the QSFP+ SRAM area comprises 256 byte spaces, wherein 0-127 byte spaces are defined as A0 LOW, and 128-255 byte spaces are defined as A0 HIGH, wherein the A0 HIGH comprises four address spaces, namely 00h, 01h, 02h and 03h;
• the protocol conversion logic is specifically as follows:
• when the SFP+ module is connected to the adapter card, the microcontroller unit reads the various code-writing information and the reporting information of the SFP+ optical module, and stores them in the A0 address and the A2 address of the SFP+ SRAM area, in an internal program processing of the microcontroller unit, when the microcontroller unit of the adapter card responds to a read-write command sent by the QSFP+ switch, information in the A0 address and the A2 address of the SFP+ SRAM area is converted into information conforming to the QSFP+ protocol and stored in the A0 address of the QSFP+ SRAM area.