AMBA® AXI4 (Advanced eXtensible Interface 4) is the fourth generation of the AMBA interface specification from ARM®. Xilinx Vivado Design Suite and. The protocol used by many SoC today is AXI, or Advanced eXtensible Interface, and is part of the ARM Advanced Microcontroller Bus Architecture (AMBA). Advanced eXtensible Interface, or AXI, is part of ARM’s AMBA The AXI protocol is based on a point to point interconnect to avoid bus sharing.

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When part of a team, your group can become more capable than a single individual, but only if your team can work together and communicate effectively. Having members of a group talk over each other leads to nothing but a cacophony, and nothing gets done. For this reason protocols need to be established, such as letting others speak without interruption, or facing those you are addressing.

The same is necessary with electronics, especially with system on chip SoC designs. Despite the various types of inputs and outputs, the IP cores all shared a common interface: Knowing the differences between these devices, I was interested in why each IP Protocpl was protoclo to share this common interface. The protocol simply sets up the rules for how different modules on a chip communicate with each other, requiring a handshake-like procedure before all transmissions.


Advanced Microcontroller Bus Architecture

The specifications of protocil protocol are quite simple, and are summarized below: To prktocol more in depth, the interface works by establishing communication between master and slave devices. Each channel has its own unique signals as well as similar signals existing among all five. The valid and ready signals exist for each channel as they allow for the handshake process to occur for each channel. After both signals are active, transmission may occur on that channel.

In the case of writing information, the response channel is used at the completion of the data transfer. The protocol is that easy! Of course protoocol are additional options that the protocol provides that up the complexity somewhat, such as burst transfer, Ptotocol, Protections, and others. These options are simply extra signals existing on the different channels that allow for additional functionality, for general use however, the above description gets the point across on how this interface generally works.

AMBA AXI Protocol Specification

Once I understood the basic idea of the AXI protocol it was much easier to understand the tutorial I was going through. The project I was building in Vivado was no longer just a bunch of blocks with random connections, but instead were the various peripherals of the TySOM board all connected with a common bus interface.


Brandon is currently working on his B. His interests include processor architectures, and the logic of these hardware designs. Introduction to Ax Protocol. Burst type communication allows for continuous transfer of data.

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