Data transmission system and method based on axi bus

Abstract

The present disclosure discloses a data transmission system and method based on the AXI bus. Corresponding to the five transmission channels of AXI, a switch bus corresponding to five channels is set up. The signal of each switch bus channel is compared with AXI It is easy to understand and the signal is simplified. The host device reads and writes data through the transfer bus first, and then transfers the transfer bus to the AXI bus, which simplifies the method of reading and writing data for the host device and reduces the number of data transmission and response times. , reduce the unnecessary waiting time between sending commands, greatly improve the data transmission efficiency, the number of signals of each channel of the transfer bus set and configured is small and simple, making the operation and configuration simple, which is helpful for newcomers to accept and understand.

Description

technical field [0001] The present disclosure relates to the related technical field of computer data transmission, and specifically relates to a data transmission system and method based on an AXI bus. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] The AXI (Advanced Extensible Interface) bus is the most widely used bus standard in the existing SOC. The AXI communication protocol is based on the BURST method for data transmission. The read and write commands and read and write responses are separated and independent of each other. Five channels can work at the same time, and the five channels have no correlation with each other during work, making data transmission more flexible. [0004] Existing data transmission based on AXI bus, such as figure 1 As shown, it is usually provided to read data from a slave device to a host device, or ...

AI Technical Summary

Problems solved by technology

like figure 2 Shown is the timing diagram of AXI bus data transmission. The existing data transmission based on AXI bus, when aiming at the continuous handling and transmission of large batches of data, there are many channel signals in the transmission, and the data length of a single transmission is stipulated by each version of AXI protocol. Short, the AXI3 protocol has a maximum transmission length of 16*size (size is the transmission data width, that is, the bus bit width), so that when a large amount of data is read and written, it is necessary to perform frequent data transmission operations, such as non-stop When sending command signals and sending data, the host needs to consider the response signal of the slave device due to the operation. When the corresponding signal is received, the data transmission will be carried out, which will greatly reduce the data transmission efficiency. The existing data transmission scheme does not have a The simple and efficient data transmission method does not take full advantage of the transmission advantages of the AXI bus protocol

Especially when the internal processing module simultaneously reads and writes a large amount of data, the existing technology has obvious deficiencies in the processing of write operations, resulting in low efficiency of data transmission

Moreover, the existing AXI bus protocol is complicated and has many signals, which is not conducive to the rapid mastery of newbies.

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