It is supported by Arm Limited with wide cross-industry participation. The AMBA specification defines an on-chip communications standard for designing high-performance embedded microcontrollers. minimize silicon infrastructure while supporting high performance and low power on-chip communication.encourage modular system design to improve processor independence, and the development of reusable peripheral and system IP libraries.be technology independent, to allow reuse of IP cores, peripheral and system macrocells across diverse IC processes,.facilitate right-first-time development of embedded microcontroller products with one or more CPUs, GPUs or signal processors,.The objective of the AMBA specification is to: AMBA is a solution for the blocks to interface with each other. These protocols are today the de facto standard for embedded processor bus architectures because they are well documented and can be used without royalties.ĭesign principles AMBA AXI handshakeĪn important aspect of an SoC is not only which components or blocks it houses, but also how they interconnect. In 2013 the AMBA 5 Coherent Hub Interface (CHI) specification was introduced, with a re-designed high-speed transport layer and features designed to reduce congestion.

In 2010 the AMBA 4 specifications were introduced starting with AMBA 4 AXI4, then in 2011 extending system-wide coherency with AMBA 4 AXI Coherency Extensions (ACE). In 2003, Arm introduced the third generation, AMBA 3, including Advanced eXtensible Interface (AXI) to reach even higher performance interconnect and the Advanced Trace Bus (ATB) as part of the CoreSight on-chip debug and trace solution. In its second version, AMBA 2 in 1999, Arm added AMBA High-performance Bus (AHB) that is a single clock-edge protocol. The first AMBA buses were the Advanced System Bus (ASB) and the Advanced Peripheral Bus (APB). AMBA is a registered trademark of Arm Ltd. Today, AMBA is widely used on a range of ASIC and SoC parts including applications processors used in modern portable mobile devices like smartphones. Since its inception, the scope of AMBA has, despite its name, gone far beyond microcontroller devices. It facilitates development of multi-processor designs with large numbers of controllers and components with a bus architecture. The Arm Advanced Microcontroller Bus Architecture ( AMBA) is an open-standard, on-chip interconnect specification for the connection and management of functional blocks in system-on-a-chip (SoC) designs.

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