The Unified Power Format (UPF) , officially known as IEEE Standard , was approved by the IEEE in December and will be. (Official IEEE P home page is here). Unified Power Format (UPF) is the popular name of the Institute of Electrical and Electronics Engineers (IEEE) standard. You learn about IEEE power supply networks, ground ports and nets, versions of UPF Debug design scenarios Analyze non-standard IEEE coding.

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Add support for bottom up and top down design add documentation of the support for upc and regular expression selection of design instances clarify the differences between ports and pins provide for convergence capability upv both UPF and Common Power Format of the Silicon Integration Initiative Si2 The IEEE group was initially called the “Low Power Study Group”.

Accellera public groups area. Attempting to create power domains inside an atomic domain will generate an error in compliant tools.

Legacy commands are fine for existing modules but are not recommended for new design modules. Retrieved August 7, We use cookies to ensure that we give you the best experience on our website. Bailey was also chairman of the IEEE group. Views Read Edit View history.

A number of features have been added to better support design reuse and commercial IP, including the ability to set constraints on usage. This strategy can be overridden for a named port on that domain, which in turn may be overridden by a command that specifies individual bits within a multibit port.

IEEE attempts to improve support for power modelling, implementation and verification throughout the lifecycle of an IC design.

The current release is IEEE Users can each download a single copy of IEEE by providing an email address at the Get website. Files written to this standard annotate 18801 electric design with the power and power control intent of that design. If you continue to use this site we will assume that you are happy with it.

Elements of that annotation include:. Retrieved from ” https: P P P P P By using this site, you agree to the Terms of Use and Isee Policy.

Unified Power Format

Elements of that annotation include: Changes in IEEE took advantage of industrial experience and a wider user base to perform a cleanup of the original standard, as well as adding new commands to support incremental specification of power modes and behavior.

Hardware iCE Stratix Virtex. Several informative annexes have been added to the standards document, such as Annex E, which provides a low-power design methodology based on the standard, and Annex I, which provides examples of how to model power-management cells. Retrieved July 6, Specific support for individual aspects of IEEE are currently unclear. Deprecated commands should be replaced isee soon as possible in current designs as future support cannot be guaranteed.

Unified Power Format – Wikipedia

In general, retention strategies influence repeater, isolation and level-shifter strategies in turn. The new version provides the ability to set power attributes on ports that are managed inside the ypf.

The way in which UPF commands override each other is expressed through precedence rules. Similarly, the structure for strategies is organized to allow high-level verification before implementation details are in place, and to avoid a decision later on from affecting ieew validity of that simulation. Instead, ieeee rules are used to allow later, more detailed UPF commands to override generic commands that may have been inserted earlier to support behavioral logic simulation.

Equivalence can be overridden in scripts to provide greater control over strategies. An important underlying concept is that of incrementality, to allow the design to be gradually elaborated over time as more implementation detail is added without forcing engineering teams to keep rewriting the command scripts.

Download IEEE Unified Power Format (UPF) standard free

The standard describes extensions to the Tool Command Language Tcl: A further addition is the concept of supply equivalence, in which supply nets can be treated as electrically or functionally equivalent to reduce the number of source and sink attributes that need to be defined. As a reaction to the Power Forward Initiative the group was proposed in July and met on September 13, From Wikipedia, the free encyclopedia.

Atomic power domains provide greater control for IP providers by preventing users from subdividing a domain so that the different parts are power-gated separately if that is not explicitly supported by the IP.

The emphasis of the latest version of the standard focuses on usability in industrial designs, restricting some of the freedom of the command set but providing better guidance for design teams trying to design ICs with complex power modes and behavior. This page was last edited on 18 Novemberat Retrieved July 7, Proposed standards have ifee letter “P” in front of them such as Pwhich is removed and replaced iede a dash and year when the standard is ratified.