AMBA AXI and ACE Protocol Specification AXI3, AXI4, and AXI4-Lite, ACE and ACE-Lite. This document is only available in a PDF version to registered ARM. Home · Documentation; ihi; f – AMBA AXI and ACE Protocol Specification AXI3, AXI4, AXI5, ACE and ACE5; AMBA AXI and ACE Protocol Specification AXI3. The Arm AMBA specifications are an open interface standard, used across the AXI (Advanced eXtensible Interface): The most widespread AMBA interface.
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AMBA AXI4 Interface Protocol
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:. Consolidates broad array of interfaces into one AXI4so users only need speicfication 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.
Tailor the interconnect to meet system goals: Performance, Area, and Power.
AMBA AXI and ACE Protocol Specification AXI3, AXI4, and AXI4-Lite, ACE and ACE-Lite
Enables you to build the most compelling products for your target markets. 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.
It includes the qmba enhancements: Support specfiication 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 ambba 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.