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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It facilitates development of multi-processor designs with large numbers of controllers and peripherals with a bus architecture.
Since its inception, the scope of AMBA has, despite its name, gone far beyond microcontroller devices. These protocols are today the de facto standard for embedded processor bus architectures because they are well documented and can be used without royalties.
Advanced Microcontroller Bus Architecture
An important aspect of a SoC is not only which components or blocks it houses, but also how they interconnect. AMBA is a solution for the blocks to interface with each other. The AMBA specification defines an on-chip communications standard for designing high-performance embedded microcontrollers. It is supported by ARM Limited with wide cross-industry participation.
The timing aspects and the voltage levels on the bus are not dictated by the specifications. AXIthe third generation of AMBA protofol 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:.
Advanced Microcontroller Bus Architecture – Wikipedia
A simple transaction on the AHB consists of an address phase and a subsequent data phase without wait states: Access to the target device is controlled through a MUX non-tristatethereby admitting bus-access to one bus-master at a time.
This subset simplifies the design for a bus with a single master.
APB is designed for low bandwidth control accesses, for example register interfaces on system peripherals. This bus has an address and data phase similar to AHB, but a much reduced, low complexity signal list for example no bursts. From Wikipedia, the free encyclopedia.
Technical and de facto standards for wired computer buses. Interfaces are listed by their speed in the roughly ascending order, so the interface at the end of each section should be the fastest. Retrieved from ” https: Computer buses System on a chip.