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Learn about the AXI protocol, a high-performance interface for connecting processors and peripherals in Arm systems. This document covers the history, features, and examples of AXI4, the latest version of the AXI protocol.
AXI is a bus protocol for on-chip communication in microcontrollers, defined by ARM. It has various versions, channels, signals and features, such as thread IDs, handshake mechanism and burst transactions.
- The Axi Architecture
- Axi Transactions
- Axi Interconnects
- Conclusion
- GeneratedCaptionsTabForHeroSec
Recall that the AHB (Advanced High Performance Bus) is a single channel bus that multiple masters and slaves use to exchange information. A priority arbiter determines which master currently gets to use the bus, while a central decoder performs slave selection. Operations are performed in bursts that can take multiple bus cycles to complete. Every ...
As mentioned earlier, an AXI data transfer is called a transaction. Transactions can take the form of reads or writes and include address/control information, data, and a response. The data is sent in the form of bursts, which include multiple data items called beats. To synchronize the sending and receiving of data, an AXI master and slave perform...
AXI interconnects allow multiple masters and/or multiple slaves to interface with each other. The AXI specification defines the interface between a master and slave, a master and interconnect, and a slave and interconnect. In reality, interconnects contain slave interfaces that connect to AXI masters and master interfaces that connect to AXI slaves...
This article was a basic introduction to the Advanced Extensible Interface (AXI) protocol. We looked at legacy AXI as specified in the third revision of AMBA. As I mentioned above, you can refer to AMBA AXI Protocol v1.0(roughly a hundred pages) for a deeper look into the first version of AXI. AXI has seen some significant changes in AMBA revision ...
Learn about AXI, an extension of AMBA for SoC design that uses multiple channels and bursts for data exchange. AXI supports out-of-order transactions, unaligned data, cache and low-power features.
Learn about the AMBA® AXI Protocol, a high-performance bus interface for connecting processors and peripherals. This document covers the features, formats, and options of the AXI Protocol and its variants, such as AXI5, AXI5-Lite, ACE5, and ACE5-Lite.
Oct 24, 2016 · Learn how AXI, or Advanced eXtensible Interface, is the protocol used by many SoC designers today to connect different modules on a chip. The blog post explains the basic rules and signals of the AXI interface, and how it works with various peripherals on the Zynq XC7Z030 board.
The AXI protocol has several key features that are designed to improve bandwidth and latency of data transfers and transactions, as you can see here: Independent read and write channels: AXI supports two different sets of channels, one for write operations, and one for read operations.
Learn the architecture and features of Advanced Microcontroller Bus Architecture (AMBA) AXI, a protocol for connecting processors and peripherals in SoC design. This guide covers transfers, transactions, channel signals, exclusive access, atomic access, and more.
