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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The way in which UPF commands override each other is expressed through precedence rules.

Retrieved August 7, The standard describes extensions to the Tool Command Language Tcl: 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.

Semantics for inferring additional elements in the design from the intent are provided in the standard. The current release is IEEE By using this site, you agree to the Terms of Use and Privacy Policy. As a language level, the command set iefe been structured to support successive refinement of power intent to reduce the usage overhead on design teams.

Retrieved July 6, Proposed standards have the letter “P” in front of them such as Pwhich is removed and replaced with a dash and year when the standard is ratified. 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. From Wikipedia, the free encyclopedia.

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Unified Power Format

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 the validity of that simulation. Elements of that annotation include: P P P P P Hard macros presented a problem for earlier versions of UPF if those macros implemented their own power-management as switchable power domains were the only way to define power supplies to domains that could be powered up and down.

In general, retention strategies influence repeater, isolation and level-shifter strategies in turn. Digital designers, IP Block providers, Physical Designers, and Verification engineers make use of this standard language to communicate their design intent up implementation with respect to the variable power of an electronic system.

IEEE 1801-2013 (UPF 2.1)

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 ufp better guidance for design teams trying to design ICs with complex power modes and behavior. A number of features have been added to better support design reuse and commercial IP, including the ability to set constraints on usage.

Accellera public groups area. 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 uof IP. Views Read Edit View history.

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

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Unified Power Format – Wikipedia

Legacy commands are fine for existing modules but are not recommended for new design modules. Where can I find it? 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.

Bailey was also chairman of the IEEE group. This page was last edited on 18 Novemberat Equivalence can be overridden in scripts to provide greater control over strategies.

Download IEEE Unified Power Format (UPF) standard free

The new version provides the ability to set power attributes on ports that are managed inside the macro. IEEE attempts to improve support for power modelling, implementation and verification throughout the lifecycle of an IC design. Deprecated commands should be replaced as soon as possible in current leee as future support cannot be guaranteed.

Specific support for individual aspects of IEEE are currently unclear.