Home · Documentation; ihi; d – AMBA AXI and ACE Protocol Specification AXI3, AXI4, and AXI4-Lite, ACE and ACE-Lite. First release of V ARM contract references: LEC-PREV ARM AMBA Specification Licence AMBA AXI Protocol Specification. AMBA® AXI4 (Advanced eXtensible Interface 4) is the fourth generation of the AMBA interface specification from ARM®. Xilinx Vivado Design Suite and.

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Enables you to build the most compelling products for your target markets. This bus has an address and data phase similar to AHB, but a much reduced, low complexity signal list for example no bursts. Xilinx users will enjoy a wide range of benefits with the transition to AXI4 as a common user interface for IP. This subset simplifies the design for a bus with a single master.

AMBA AXI4 Interface Protocol

aarm Enables Xilinx to efficiently deliver enhanced native memory, external memory interface and memory controller solutions across all application domains.

Views Read Edit View history. ChromeFirefoxInternet Explorer 11Safari. Key features of the protocol are: Technical and de facto standards for wired computer buses. Please upgrade to a Xilinx. Performance, Area, and Power.

AXI4-Lite is a subset of the AXI4 protocol intended for communication with simpler, smaller control register-style interfaces in components. All interface subsets use the same transfer protocol Fully specified: Ready for adoption by customers Standardized: APB is designed for low bandwidth control accesses, for example register interfaces on system peripherals.

The interconnect is decoupled from the interface Extendable: The key features of the AXI4-Lite interfaces are:. Access to the target device is controlled through a MUX non-tristatethereby admitting bus-access to one bus-master at a time.

AMBA AXI4 Interface Protocol

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 Speciffication protocol is designed for unidirectional data transfers from master to slave with greatly reduced signal routing. The timing aspects and the voltage levels on the bus are not dictated by the specifications.


An important aspect of a SoC is not only which components or blocks it houses, but also how they interconnect. Interfaces are listed by their speed in the roughly ascending order, so the interface at the end of each section should be the fastest. Consolidates broad array of interfaces into one AXI4so users only need to know one family of specificcation 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.

Computer buses System on a chip.

These protocols are today the de facto standard for embedded processor bus architectures because they are well documented and can be used without royalties.

AXIthe third generation of AMBA interface defined in the AMBA 3 specification, is targeted at high performance, high clock frequency system designs and includes features that make it suitable for high speed sub-micrometer interconnect:.

Since its inception, the scope of AMBA has, despite its name, gone far beyond microcontroller devices. 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 anba with greatly reduced signal routing.

Key features of the protocol are:. AMBA is a solution for the blocks to interface with each other. Supports single and multiple data streams using the same set of shared wires Supports multiple data widths within the specifciation interconnect Ideal for implementation in FPGAs.


AMBA AXI Protocol Specification

It is supported by ARM Limited with wide cross-industry participation. Supports both memory mapped and streaming type interfaces Provides a unified interface on IP across communications, video, embedded and DSP speification 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.

It includes the following enhancements: Retrieved from ” https: The key features ambba the AXI4-Lite interfaces are: Includes standard models and checkers for designers to use Interface-decoupled: From Wikipedia, the free encyclopedia. This page was last edited on 28 Novemberat AXI4 is open-ended to support future needs Additional benefits: It facilitates development of multi-processor designs with large numbers of controllers and peripherals protovol a bus architecture.

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A simple transaction on the AHB consists of an address phase and a subsequent data phase without wait states: By using this site, you agree to the Terms of Use and Privacy Policy. We have detected your current browser version is not the latest one. 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:. The AMBA specification defines an on-chip communications standard for designing high-performance embedded microcontrollers. Tailor the interconnect to meet system goals: