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The primary motivation of AMBA protocols is to have a standard and efficient way to interconnecting these blocks with re-use across multiple designs. Following diagram reference from the AMBA 2. Following diagram illustrates this evolution of protocols along with the SOC design trends in industry. Following diagram illustrates how an AXI interconnect can be used to build an SOC with various functional blocks talking through a master-slave protocol.
Lastly, in the current era of heterogeneous computing for HPC and data center markets, the integration trend continues with increasing number of processor cores along with several heterogeneous computing elements like GPU, DSP, FPGAs, memory controllers and IO sub systems. Now that hopefully you understand how the protocols evolved and how each of them fit in to an SOC design— here are few basics and references to resources that you can use to learn more in depth about each of the protocol.
ARM has open sourced all of the protocols and all the specifications can be downloaded from the ARM website free by signing up. Hope this gives an overview and helps getting started to learn more in depth into these protocols. The best way to learn further is to read the specifications to understand details of each protocol. This is a guest post by Ramdas Mozhikunnath. December 05, , anysilicon. Find Vendors IP Cores. Copyright , AnySilicon. All rights reserved.
Comparing AMBA AHB to AXI Bus using System Modeling
Accelerating 5G virtual RAN deployment. RoT: The Foundation of Security. Managing connected devices at scale: Connect millions of shipments on one platform. Arm Mali Best Practices 2. Embedded system designers have a choice of using a shared or point-to-point bus in their designs. In addition, there might be a port to a DSP processor, or hardware accelerator, common with the increased use of video in many applications. As chip-level device geometries become smaller and smaller, more and more functionality can be added without the concomitant increase in power and cost per die as seen in prior generations.
Advanced Microcontroller Bus Architecture
It facilitates development of multi-processor designs with large numbers of controllers and components with a bus architecture. Since its inception, the scope of AMBA has, despite its name, gone far beyond microcontroller devices. These protocols are today the de facto standard for embedded processor bus architectures because they are well documented and can be used without royalties. An important aspect of an SoC is not only which components or blocks it houses, but also how they interconnect. AMBA is a solution for the blocks to interface with each other. The AMBA specification defines an on-chip communications standard for designing high-performance embedded microcontrollers.