Host equipment data transmission extension method based on AXI bus

Abstract

The invention discloses a host equipment data transmission extension method based on an AXI bus. The host equipment data transmission extension method is characterized in that a protocol conversion module is added between an AXI bus and an FIFO interface bus of host equipment; the protocol conversion module comprises an MST_FIFO module and an MST_IF module; the MST_IF module receives a read-writeaddress, a read-write length and a control command from the AXI interface; the MST_FIFO comprises five independent FIFOs which respectively correspond to five independent channels of a write command,a write data, a write response, a read command and a read data of an AXI bus; and the five independent FIFOs receive or send the five independent channels to host equipment. According to the host equipment data transmission extension method, the protocol conversion of the AXI signal and the FIFO signal is realized through the protocol conversion module, so that the self-research module does not need to accord with the AXI protocol any more, and the design flow of the self-research module is simplified, and the independence of each channel of the AXI protocol and the characteristics of high performance, and high bandwidth and low delay of the protocol are maintained.

Description

technical field [0001] The invention relates to an AXI bus-based host device data transmission extension method, and belongs to the technical field of AXI bus data transmission. Background technique [0002] The AXI bus is a close cooperation between Xilinx and ARM to jointly define the AXI protocol specification for FPGA-based high-performance systems and designs. The AXI protocol is adopted on the new-generation FPGA chip. Therefore, when implementing the self-developed module on the FPGA chip, the module interface must meet the AXI protocol. However, because the AXI protocol needs to meet the characteristics of high performance and low latency, the bus signals are complex and numerous. And the handshake signal mechanism is not easy to implement. [0003] The existing AXI bus-based data transmission, when aiming at the continuous handling and transmission of large quantities of data, there are many channel signals in the transmission, and frequent data transmission operat...

AI Technical Summary

Problems solved by technology

For the part of the read and write data channel, the read and write response of the AXI bus has not been realized, so the advantages of high stability of the AXI bus cannot be realized

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