Communication method and device for axi bus and ahb bus

Abstract

The invention discloses a method for mutual communication between an AXI bus and an AHB bus, which mainly completes the read and write operations between the AXI bus and the AHB bus to realize the communication between the two. After the AXI bus master sends a read and write request, the AXI bus and AHB bus communication bridge latches the read and write address, and keeps the address valid during the transmission process, including the latch of the read and write control signals; then the AXI bus communicates with the AHB bus The bridge decodes the latched address and generates a selection signal. Only one selection signal can be activated during the transmission process, that is, the only AHB slave device is selected for read and write operations; during the write operation, the AXI bus and The AHB bus communication bridge is responsible for sending the data from the AXI bus to the AHB bus through the data buffer; during the read operation, the AXI bus and AHB bus communication bridge is responsible for sending the data on the AHB bus to the AXI bus through the data buffer.

Description

technical field [0001] The invention relates to a method and a device for mutual communication between an AXI bus and an AHB bus, and belongs to the technical field of system-on-chip (SOC) bus design. Background technique [0002] With the development of large-scale integrated circuits and semiconductor technology, SoCs are more and more widely used in various fields. In the classic system design method, the connection between the slave device and the processor is mainly at the board level, and now a large part of it is integrated into the chip, which can avoid many shortcomings of PCB design, such as reducing system power consumption, achieving thinner, purpose of lowering prices. However, the scale and complexity of the entire chip are increasing day by day, and the requirements for chip designers are also increasing, and system designers are faced with many new problems. The key to solving these problems is to have a suitable on-chip bus structure. The AXI bus is the m...

AI Technical Summary

Problems solved by technology

The AXI bus is more and more widely used in the design of the on-chip bus, but the AHB bus will not be completely replaced by the AXI bus due to its good interaction with peripherals.

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