IEEE 1801 UPF PDF

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 emphasis of the hpf 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.

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.

IEEE 1801-2013 (UPF 2.1)

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

Legacy commands are fine for existing modules but are not recommended for new design modules. 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. IEEE attempts to improve support for power modelling, implementation and verification throughout the lifecycle of an IC design.

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Upg 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. 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.

Download IEEE Unified Power Format (UPF) standard free

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

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. In general, ieee strategies influence repeater, isolation and level-shifter strategies in turn.

A number of features have been added to better support design reuse and commercial IP, including the ability to set constraints on usage. Hard macros presented a problem for earlier versions of UPF if those macros implemented their own power-management as switchable power domains were the ieeee way to define power supplies to domains that could be powered up and down.

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The new version provides the ability to set power attributes on ports that are managed inside the macro. 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. Attempting to create power domains inside an atomic domain ufp generate an error in compliant tools. 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.

Unified Power Format

Equivalence can be overridden in scripts to provide greater control over strategies. Users can each download a single copy of IEEE by providing an email address at the Get website.

Specific support for individual aspects of IEEE are currently unclear.

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