FPGA-based interface conversion method for different rates

Abstract

The invention discloses an FPGA-based interface conversion method with different rates, which comprises the following steps: data of a main communication board card is sent to a low-speed cache and high-speed sending conversion module through a data line and a control line of a GTP, and the data comprises a data stream and a control signal; after the data streams and the corresponding control signals are received, the received low-speed data streams are integrated into high-speed data streams based on a cache sending mode, and the high-speed data streams are sent to the driving sending module; the drive sending module is used for converting the high-speed data stream into serial data, converting the serial data into parallel data and sending the parallel data to a high-speed cache low-speed sending conversion module; the parallel data is integrated into the low-speed data stream based on a cache sending mode, the control signal is recovered, and then the low-speed data stream and the control signal are sent to the slave communication board card, so that the memory resources of the FPGA required by conversion of interfaces with different rates are reduced.

Description

technical field [0001] The invention relates to the technical field of FPGA communication, in particular to an FPGA-based interface conversion method of different rates. Background technique [0002] The space-ground integrated information network with the satellite constellation system as an important part is an important network foundation supporting my country's economic development and national defense information construction, and has become an important development direction of my country's "new infrastructure". Inter-satellite communication requires an efficient and stable transmission rate, ensuring large bandwidth between satellites and high-speed data transmission, which is an important basis for space-ground integration. [0003] Taking the Beidou satellite as an example, the communication chip used by the interstellar interface is TLK2711. The chip TLK2711 has its own set of communication protocols, which is different from the communication protocol of the commu...

AI Technical Summary

Problems solved by technology

For the interface conversion of different bits and different rates, the "ping-pong method" is mostly used inside the FPGA, which will take up a lot of storage resources when the amount of data is large, but the storage resources inside the FPGA are not rich. When it is too large, it may lead to insufficient storage resources inside the FPGA

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