AMBA 4.0 SPECIFICATION PDF

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Xilinx users will enjoy a wide range of benefits with the transition to AXI4 as a common user interface for IP. AXI4 is:. The AXI4 protocol is an update to AXI3 which is designed to enhance the performance and utilization of the interconnect when used by multiple masters. It includes the following enhancements:. AXI4-Lite is a subset of the AXI4 protocol intended for communication with simpler, smaller control register-style interfaces in components.

The key features of the AXI4-Lite interfaces are:. The AXI4-Stream protocol is designed for unidirectional data transfers from master to slave with greatly reduced signal routing. Key features of the protocol are:. Overview Key Benefits Details Overview. Higher Productivity. Consolidates broad array of interfaces into one AXI4 , so users only need to know one family of interfaces Makes integrating IP from different domains, as well as developing your own or 3rd party partner IP easier Saves design effort because AXI4 IP are already optimized for the highest performance, maximum throughput and lowest latency.

Greater Flexibility. Tailor the interconnect to meet system goals: Performance, Area, and Power. Enables you to build the most compelling products for your target markets. Broad IP Availability. Ecosystem Enablement. AXI4 is: Consistent: All interface subsets use the same transfer protocol Fully specified: Ready for adoption by customers Standardized: Includes standard models and checkers for designers to use Interface-decoupled: The interconnect is decoupled from the interface Extendable: AXI4 is open-ended to support future needs Additional benefits: Supports both memory mapped and streaming type interfaces Provides a unified interface on IP across communications, video, embedded and DSP functions Is easy to use, with features like automatic pipeline instantiation to help you more easily hit a specific performance target Is equal to or better than current solutions in key attributes, such as fMAX, LUT usage, latency, and bandwidth.

Enables Xilinx to efficiently deliver enhanced native memory, external memory interface and memory controller solutions across all application domains. AXI Details. It includes the following enhancements: Support for burst lengths up to beats Quality of Service signaling Support for multiple region interfaces AXI4-Lite AXI4-Lite is a subset of the AXI4 protocol intended for communication with simpler, smaller control register-style interfaces in components.

The key features of the AXI4-Lite interfaces are: All transactions have a burst length of one All data accesses are the same size as the width of the data bus Exclusive accesses are not supported AXI4-Stream The AXI4-Stream protocol is designed for unidirectional data transfers from master to slave with greatly reduced signal routing.

Key features of the protocol are: Supports single and multiple data streams using the same set of shared wires Supports multiple data widths within the same interconnect Ideal for implementation in FPGAs. Feedback Close.

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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.

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AMBA AXI4 Interface Protocol

Over the next few months we will be adding more developer resources and documentation for all the products and technologies that ARM provides. Sorry, your browser is not supported. We recommend upgrading your browser. We have done our best to make all the documentation and resources available on old versions of Internet Explorer, but vector image support and the layout may not be optimal.

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