Magic Blue Smoke

Archive for 2009

 

Generating Partial UPF Automatically

Sorry guys, got tied up with many projects and could not blog for almost 4 weeks.

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Isolation Cell Usage Tips

Isolation cells are used in almost all power gated designs.  Given below are some tips about these cells, this information is based on my experience working with various designers.

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Why is Low Power Based Optimization more challenging for the tools

 

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Why is Low Power Based Optimization more challenging for the tools?

 

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Power Gating and Decoupling Cap cell insertion(Cont’d)

 

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Power Gating and Decoupling Cap cell Insertion

Hearing many concerns on topics related to power gated design and its relation to decoupling capacitor to reduce IR-Drop issues. Thought of writing a paragraph on this topic.

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DAC 2009 Low Power Highlights

 

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Level Shifter Insertion Rule in UPF

Recently found some interesting information on how to write proper level shifter rule, when designer does not want to insert LS in one particular direction.

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Resolving Multiple Drivers for Supply Nets in UPF

Quite often I am seeing, different switch cells are used in parallel(controlled turn-on) to shut-down

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Working on Hierarchical UPF flow

Working on hierarchical UPF flows these days, its quite interesting to observe how tools optimize PST hierarchically and also on how to constrain/write UPF for lower level blocks.

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