IEEE1801 UPF  

                                              --- A brief introduction and overview

 

一、What is UPF?

        

 

二、Components of UPF

        

 

 2.1、Power Domains

       

 

 2.2、Supply Sets

        

 

 2.3、Simstates

       

 

 2.4、Power State

        

 

 2.5、Power Switches

        

 

 2.6、Isolation Strategies

        

 

 2.7、Level Shifting Strategies

        

 

 2.8、Retention Strategies

        

 

 2.9、Successive Refinement of Power Intent

        

 

三、A Soft IP provider need only declare four things:

 3.1. The "atomic" power domains in the design

• These can be merged but not split during implementation

 3.2. The state that needs to be retained during shutdown

• Without prescribing how retention is controlled

 3.3. The signals that need isolating high/low

• Without prescribing how isolation is controlled

 3.4. The legal power states and sequencing between them

• Without prescribing absolute voltages

 

        

 

 

        

 

 

        

 

        

 

        

 

        

 

        

 

        

 

         

 

        

 

        

 

        

 

        

 

四、The New IEEE1801-2013 Standard

 4.1、Revisited each and every command

• Rewrote the major strategy commands

 4.2、Rewrote many key sections:

• Definitions, UPF Concepts, Language Basics, Simulation Semantics

 4.3、Added new sections:

• Power management cell commands, UPF processing,
• Informative Annex on Low Power Design Methodology

 4.4、 “D14” approved by IEEE-SA March 6th 2013

• A 95% (19/20) approval rate on a 95% (20/21) return.
• One the largest entity base ballot pools in IEEE-SA history

 4.5、IEEE1801-2013 Published May 30th 2013

• Available at no charge via the IEEE Get™Program
• http://standards.ieee.org/findstds/standard/1801-2013.html
• http://standards.ieee.org/getieee/1801/download/1801-2013.pdf