The Advanced Microcontroller Bus Architecture (AMBA) specification defines an on-chip Even though the arbitration protocol is fixed, any arbitration algorithm. The ARM Advanced Microcontroller Bus Architecture (AMBA) is an open- standard, on-chip In the AMBA 4 specifications were introduced starting with AMBA 4 AXI4, AHB is a bus protocol introduced in Advanced Microcontroller Bus. Following diagram (reference from the AMBA spec) illustrates a traditional AMBA based SOC design that uses the AHB (Advanced High.

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An important aspect of a SoC is not only which components or blocks it houses, but also how they interconnect. It facilitates development of multi-processor designs with large numbers of controllers and peripherals with a bus architecture.

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:. A simple transaction on the AHB consists of an protoco phase and a subsequent data phase without wait states: Interfaces are listed by their speed in the roughly ascending order, so the interface at the end of each section should be the fastest. Since its inception, the scope of AMBA has, despite its name, gone far beyond microcontroller devices.

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Advanced Microcontroller Bus Architecture

It is supported by ARM Limited with wide cross-industry participation. This bus has an address and data phase similar to AHB, but a much reduced, low complexity signal list for example no bursts.

This subset simplifies the design for a profocol with a single master. The timing aspects and the voltage levels on the bus are not dictated by the specifications.

Access to the target device is controlled through a MUX non-tristatethereby admitting bus-access to one bus-master at a time.

Advanced Microcontroller Bus Architecture – Wikipedia

These protocols are today the de facto standard for embedded processor bus architectures because they are well documented and can be used without royalties. From Wikipedia, the free encyclopedia. APB is designed for low bandwidth control accesses, for example register interfaces on system peripherals.

Retrieved from ” https: This page was last edited on 28 Novemberat The AMBA specification defines speciication on-chip communications standard for designing high-performance embedded microcontrollers. Views Read Edit View history.

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ARM AMBA 5 AHB Protocol Specification

Technical and de facto standards for wired computer buses. AMBA is a solution for the blocks to interface with each other. Computer buses System on a chip.