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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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.

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. 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 ieee up and down.

Unified Power Format – Wikipedia

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. 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.

A number of features have been added to better support design reuse and commercial IP, including the ability to set constraints on usage.


Semantics for inferring additional elements in the design from the intent are provided in the standard. Users can each download a single copy of IEEE by providing an email address at the Get website.

Latest version of IEEE 1801/UPF available for free

Retrieved from ” https: The new version provides the iee to set power attributes on ports that are managed inside the macro. We use cookies to ensure that we give you the best experience on our website. Hardware iCE Stratix Virtex. The way in which UPF commands override each other is expressed through precedence rules.

IEEE Unified Power Format

Equivalence can be overridden in scripts to provide greater control over strategies. Accellera public groups area. Where can I find it? Files written to this standard annotate an electric design with the power and power control intent of that design. 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.

By using this site, you agree to the Terms of Use and Privacy Policy. Add support for bottom up and top down design add documentation of the support for wildcard and regular iee 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 Ieer Si2 The IEEE group was initially called the “Low Power Study Group”.

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. If you continue to use this site we will assume that you are happy with it.


Elements of that annotation include: Specific support for individual aspects of IEEE are currently unclear. This page was last edited ypf 18 Novemberat 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.

The standard describes extensions ieeee the Tool Command Language Tcl: 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.

Deprecated commands should be replaced as soon as possible in current designs as future support cannot be guaranteed. 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 uf modules.

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.

Retrieved August 7, 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.

As a reaction to the Power Forward Initiative the group was proposed in July and met on September 13, Elements of that annotation include:. Retrieved July 7,