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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A further addition is the concept of supply equivalence, in which supply nets can be iewe as electrically or functionally equivalent to reduce the number of source and sink attributes that need to be defined. 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.

The way in which UPF commands override each other u;f expressed through precedence rules. Where can I find it? 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.

Accellera public groups area. 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. Bailey was also chairman of the IEEE group. Retrieved from ” https: This page was last edited on 18 Novemberat The current release is IEEE By using this site, you agree to the Terms of Use and Privacy Policy.


As a reaction to the Power Forward Initiative the group was proposed in July and met on September 13, As a language level, the command set has been structured to support successive refinement of power intent to reduce the usage overhead on design teams. The standard describes extensions to the Tool Command Language Tcl: Hardware iCE Stratix Virtex. 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 puf complex upt modes and behavior.

IEEE Unified Power Format

Legacy commands are fine for existing modules but are not recommended for new design modules. In general, retention strategies influence repeater, isolation and level-shifter strategies in turn. IEEE attempts to improve support for power modelling, implementation and verification throughout the lifecycle of an IC design.

P P P P P Users can each download a single copy of IEEE by providing an email address at the Get website.

Unified Power Format

We use cookies to ensure that we give you the best experience on our website. Semantics for inferring additional elements in the design from the intent are provided in the standard. Attempting to create power domains inside an atomic domain will generate an error in compliant tools.

Elements of that annotation include: Views Read Edit View history. Equivalence can be overridden in scripts to provide iee control over strategies. Instead, precedence 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.

Guide to changes in IEEE (UPF )

From Wikipedia, the free encyclopedia. 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. Retrieved August 7, 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.


Retrieved July 6, Atomic power domains provide greater control for IP providers by preventing users from keee a iree so that the different parts are power-gated separately if that is not explicitly supported by the IP. 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.

Digital designers, IP Block providers, Physical Designers, and Verification engineers make use of this standard language to communicate their design intent and implementation with respect to the variable power of an electronic system.

Files written to this standard annotate an iieee design with the power and power control intent of that design. The new version provides the ability to set power attributes on ports that are managed inside the macro. If you continue to use this site we will assume that you are happy with it. Specific support for keee aspects of IEEE are currently unclear. Retrieved July 7, Deprecated commands should be replaced as soon as possible in current designs as future support cannot be guaranteed.