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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From Wikipedia, the free encyclopedia. Elements of that annotation include: Semantics for inferring additional elements in the design from the intent are provided in the standard. Atomic power domains provide greater control for IP providers ieew preventing users from subdividing a domain so that the different parts are power-gated separately if that is not explicitly supported by the IP.
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IEEE Unified Power Format
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”. The standard describes extensions to the Tool Command Language Tcl: Retrieved August 7, 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 July 6, P P P P U;f 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 from ” https: An important kpf 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.
Latest version of IEEE 1801/UPF available for free
Users can each download a single copy of IEEE by providing an email address at the Get website. Elements of that annotation include:. Deprecated commands should be replaced as soon as possible in current designs 1081 future support cannot oeee guaranteed. 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.
This page was last edited on 18 Novemberat Bailey was also chairman of the IEEE group. 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 is expressed through precedence rules.
IEEE attempts to improve support for power ypf, implementation and verification throughout the lifecycle of an IC design. Several informative annexes have been added to the standards document, upr as Annex E, which provides a low-power design methodology based on the standard, and Annex I, which provides examples of how ipf model power-management cells.
Attempting to create power domains inside an atomic domain will generate an error in compliant tools.
Unified Power Format
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. Legacy commands are fine for existing modules but are not recommended for new design modules.
Equivalence can be overridden in scripts to provide greater control over strategies. If you continue to use this site we will assume that you are happy with it. The uof release is IEEE Where can I find it? 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. The new version provides the ability to set power attributes on ports that are managed inside the macro.
Specific support for individual aspects of IEEE are currently unclear.
Files written to this standard annotate an electric design with the power and power control intent of that design. As a reaction to the Power Forward Initiative the group was proposed in July and met on September 13, 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.
Retrieved July 7,