Platform Designer (Standard) allows memory-mapped connections between AMBA® 3 AXI components, AMBA® 3 AXI and AMBA® 4 AXI components, and. AMBA®. AXI Protocol. Version: Specification Subject to the provisions of Clauses 2, 3 and 4, ARM hereby grants to LICENSEE a. AMBA® AXI4 (Advanced eXtensible Interface 4) is the fourth generation of the AMBA the AXI4 specification for high-performance FPGA-based systems and designs. The Xilinx AXI Reference Guide guides users through the transition to AXI4 3rd party IP and EDA vendors everywhere have embraced the open AXI4 .
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AXI4 is open-ended to support future needs Additional benefits: AXI write strobes can have any pattern that is compatible with the address and size dpecification. By continuing to use our site, you consent to our cookies.
From Wikipedia, the free encyclopedia. Ready for adoption by customers Standardized: ID width limited to bits.
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. Most signals are allowed. Important Information for the Arm website.
Key features of the protocol are: Over the next specifictaion months we will be adding more developer resources and documentation for all the products and technologies that ARM provides. Technical documentation is available as a PDF Download. It facilitates development of multi-processor designs with large numbers of controllers and peripherals with a bus architecture.
Advanced Microcontroller Bus Architecture
To avoid cyclic dependencies, Platform Designer Standard supports a single outstanding slave scheme for both reads and spdcification. The five unidirectional channels with flexible relative timing between them, and multiple outstanding transactions with out-of-order data capability enable: Cortex-M System Design Kit.
The AXI4-Stream protocol is designed for unidirectional data transfers from master to slave with greatly reduced signal routing. It does not change the address, burst length, or burst size aaxi non-modifiable transactions, with the following exceptions:. For slaves that do not reorder, Platform Designer Standard allows the transaction ID to be transferred to the slave.
The interconnect is decoupled from the interface Extendable: Narrow bus transfers are supported. Exclusive accesses are supported for AXI slaves by passing the lock, transaction ID, and response signals from master to slave, with the limitation that slaves that do not reorder responses.
These protocols are today the de facto standard for embedded processor bus architectures because they are well documented and can be used without royalties. AXI4-Lite is a subset of the AXI4 protocol sppecification for communication with simpler, smaller control register-style interfaces in components. For read commands, narrow-sized bursts are broken up into multiple non-bursting commands, and each command with the correct byteenable paths asserted.
Changing the targeted slave before all responses have returned stalls the master, regardless of wmba ID.
Advanced Microcontroller Bus Architecture – Wikipedia
All responses must come from the terminal slave. 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:.
Accept and hide this message. Platform Designer Standard ignores all other bits, for example, read allocate or write allocate because the interconnect does not perform caching. For a bit AXI master that issues a read command with an unaligned address starting at address 0x01with 4-bytes to an 8-bit AXI slave, the starting address is: We recommend upgrading your browser. Key features of the protocol are:.
AMBA AXI4 Interface Protocol
An important aspect of a SoC is not only which components or blocks it houses, but also how they interconnect. The AMBA specification defines an on-chip communications standard for designing high-performance embedded microcontrollers.
Low power extensions are not supported in Platform Designer Standardversion Performance, Area, and Power. Please upgrade to a Xilinx.
The following scenarios are examples: Locked accesses are also not supported.