Method and device for communication between AXI (advanced extensible interface) bus and AHB (advanced high-performance bus)

Abstract

The invention discloses a method for communication between an AXI (advanced extensible interface) bus and an AHB (advanced high-performance bus). By using the method, reading and writing operation between the AXI bus and the AHB is finished, and the communication between the AXI bus and the AHB is realized. The method comprises the following steps that after main equipment of the AXI bus sends outa reading and writing request, a reading and writing address is latched by an AXI bus and AHB communication bridge, effective addresses are kept in a transmitting process, and reading and writing control signals are latched; the AXI bus and AHB communication bridge decodes the latched address and generates selection signals, and only one selection signal can be activated in a transmitting process, namely the unique AHB is selected to perform reading and writing operation from the equipment; during writing operation, the AXI bus and AHB communication bridge sends data transmitted from the AXIbus to the AHB by using a data buffer; and during reading operation, the AXI bus and AHB communication bridge sends the data on the AHB to the AXI bus by using 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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