This book is for the AMBA APB Protocol Specification. Intended audience. This book is written for hardware and software engineers who want. to design modules that conform to the AMBA specification. Organization purpose of AMBA AHB or APB protocol descriptions is defined. interconnect specification for the purpose of connecting and managing functional The APB is the member of the AMBA 3 protocol family which implements a.

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A simple transaction on the AHB consists of an address phase and a subsequent data phase without wait states: APB is a non-bursting interface.

By disabling cookies, some features of the site will not work. Technical and de facto standards for wired computer buses. Computer buses System on a chip. AMBA is a solution for the blocks to interface with each other. The AMBA specification defines an on-chip communications standard for prrotocol high-performance embedded microcontrollers.

Accept and hide this message. APB is designed for low bandwidth control accesses, for example register interfaces on system peripherals. We have done our best to make all the documentation and resources available on old versions of Internet Explorer, but vector image support and the layout may not be optimal.

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AMBA APB Protocol Specification

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

If you are not happy with the use of these cookies, please review our Cookie Policy to learn soecification they can be disabled. These protocols are today the de facto standard for embedded processor bus architectures because they are well documented and can be used without royalties. Since its inception, the scope of AMBA has, despite its name, gone far beyond microcontroller devices.


APB Advanced Peripheral Bus interface is optimized for minimal power prootocol and reduced interface complexity. Technical documentation is available as rpotocol PDF Download. Important Information for the Arm website. By using this site, you agree to the Terms of Use and Privacy Policy.

An important aspect of a SoC is not only which components or blocks it houses, but also how they interconnect. By continuing to use our site, you consent to our cookies. We recommend upgrading your browser. Signal transitions are sampled at the rising edge of the clock to enable the integration of APB peripherals easily into any design flow. This subset simplifies the design for a bus with a single master.

We appreciate your feedback. 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:. It facilitates development of multi-processor designs with large numbers of controllers and peripherals with a bus architecture.

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AVIP for AMBA APB | Cadence IP

It is supported by ARM Limited with wide cross-industry participation. Retrieved from ” https: When connecting a wider master to a narrower APB slave, ;rotocol width adapter converts the wider transactions to a narrower transaction to fit the APB slave data width. The timing aspects and the voltage levels on the bus are not dictated by the specifications. You copied the Doc URL to your clipboard. This page was last edited on 28 Novemberat APB does not support Write Strobe.

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This bus has an address and data phase similar to AHB, but a much reduced, low profocol signal list for example no bursts. Was this page helpful?

AMBA 3 APB Protocol Specification Support (version )

You should then connect the slave side of the bridge to any high speed interface and connect the master side of the bridge to the APB slaves. Interfaces are listed by their speed in the roughly ascending order, so the interface at the end of each section should be the fastest. Over the next few months we will be adding more developer resources and documentation for all the products and technologies that ARM provides.

In this case, the slave data may be overwritten or corrupted. You can use APB to interface to peripherals which are low-bandwidth and do not require the high performance of a pipelined bus interface. As a workaround, you can group PSELx, and then send the packet to the slave directly.

JavaScript seems to be disabled in your browser. From Wikipedia, the free encyclopedia. Error responses are returned to the master. Therefore, when you connect a narrower transaction to a wider APB slave, the slave cannot determine which byte lane to write.