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Course contents

  • How to Use This Course
  • Low-Power Metrics Reference
  • Low-Power Glossary
  • Reading Path
  • Power Intent Fundamentals61
  • Isolation & Retention61
  • Level Shifters & Power Switches61
  • UPF Implementation Flow61
  • Low Power Verification61
    • Power State Verification
    • UPF Formal Checks
    • Isolation Coverage
    • Low-Power Verification Debug
    • Low Power Verification: Tricky Q&A
  • PD & Power Grid Integration61
  • Low Power Interview Prep4
  • Low Power / UPF Cheatsheet
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‹Low-Power Design
  1. Topics
  2. Low-Power Design
  3. Low Power Verification

Low Power / UPF · All levels

Low Power Verification

UPF-aware simulation, formal checks, coverage closure, and debug methodology for power-state interactions.

  • 5topics
  • 61lessons

Topics in this section

  1. 1Power State Verification15 lessons
    • Power State Verification: Mechanism
    • Power State Verification: Inputs & Outputs
    • Power State Verification: Reports & Metrics
    • Power State Verification: Debug Playbook
    • Power State Verification: Worked Example
    • Power State Verification: Pitfalls & Red Flags
    • Power State Verification: Interview Drills
    • Power State Verification: Review Checklist
    • Power State Verification: Theory Deep Dive
    • Power State Verification: Design Space
    • Power State Verification: Expanded Case Study
    • Power State Verification: Step-by-Step Walkthrough
    • Power State Verification: Comparison Matrix
    • Power State Verification: Software / Programmer View
    • Power State Verification: Silicon PPA Impact
  2. 2UPF Formal Checks15 lessons
    • UPF Formal Checks: Mechanism
    • UPF Formal Checks: Inputs & Outputs
    • UPF Formal Checks: Reports & Metrics
    • UPF Formal Checks: Debug Playbook
    • UPF Formal Checks: Worked Example
    • UPF Formal Checks: Pitfalls & Red Flags
    • UPF Formal Checks: Interview Drills
    • UPF Formal Checks: Review Checklist
    • UPF Formal Checks: Theory Deep Dive
    • UPF Formal Checks: Design Space
    • UPF Formal Checks: Expanded Case Study
    • UPF Formal Checks: Step-by-Step Walkthrough
    • UPF Formal Checks: Comparison Matrix
    • UPF Formal Checks: Software / Programmer View
    • UPF Formal Checks: Silicon PPA Impact
  3. 3Isolation Coverage15 lessons
    • Isolation Coverage: Mechanism
    • Isolation Coverage: Inputs & Outputs
    • Isolation Coverage: Reports & Metrics
    • Isolation Coverage: Debug Playbook
    • Isolation Coverage: Worked Example
    • Isolation Coverage: Pitfalls & Red Flags
    • Isolation Coverage: Interview Drills
    • Isolation Coverage: Review Checklist
    • Isolation Coverage: Theory Deep Dive
    • Isolation Coverage: Design Space
    • Isolation Coverage: Expanded Case Study
    • Isolation Coverage: Step-by-Step Walkthrough
    • Isolation Coverage: Comparison Matrix
    • Isolation Coverage: Software / Programmer View
    • Isolation Coverage: Silicon PPA Impact
  4. 4Low-Power Verification Debug15 lessons
    • Low-Power Verification Debug: Mechanism
    • Low-Power Verification Debug: Inputs & Outputs
    • Low-Power Verification Debug: Reports & Metrics
    • Low-Power Verification Debug: Debug Playbook
    • Low-Power Verification Debug: Worked Example
    • Low-Power Verification Debug: Pitfalls & Red Flags
    • Low-Power Verification Debug: Interview Drills
    • Low-Power Verification Debug: Review Checklist
    • Low-Power Verification Debug: Theory Deep Dive
    • Low-Power Verification Debug: Design Space
    • Low-Power Verification Debug: Expanded Case Study
    • Low-Power Verification Debug: Step-by-Step Walkthrough
    • Low-Power Verification Debug: Comparison Matrix
    • Low-Power Verification Debug: Software / Programmer View
    • Low-Power Verification Debug: Silicon PPA Impact
  5. 5Low Power Verification: Tricky Q&A1 lesson
On this page

    Section goal

    UPF-aware simulation, formal checks, coverage closure, and debug methodology for power-state interactions.

    How to study this section

    1. Start with each topic hub and sketch the domain/state model.

    2. Use mechanism and reports pages to connect policy intent to evidence.

    3. Practice debug and worked-example pages for review readiness.

    4. Close with checklist and silicon impact before signoff discussions.

    Topics

    1. power-state-verification/ — Power State Verification

    2. upf-formal-checks/ — UPF Formal Checks

    3. isolation-coverage/ — Isolation Coverage

    4. lp-verification-debug/ — Low-Power Verification Debug

    Related topics

    • Low Power / UPF course hub

    Low-power deep dive

    Transition-centric verification closes LP risk better than active-mode-centric regressions.

    Concept diagram

    Diagram
    VERIFY LOOP
    
    transition matrix -> simulation + formal -> coverage -> closure

    Metric graph

    Diagram
    COVERAGE CLOSURE
    
    state transitions covered   ███████████
    isolation activation        █████████
    retention restore paths     ████████

    Reports and artifacts

    • state coverage

    • formal LP properties

    • isolation coverage

    • LP bug triage dashboard

    Mini case study

    Coverage looked high, but one untested OFF->RUN transition hid a restore race.

    Debug branches

    • Rank by transition criticality

    • Correlate PMU logs with failures

    • Escalate unproven properties

    Senior review question

    Ask: what transition evidence proves this topic is closed, and which owner signs it?

    Execution drill pack 1

    Use this pack to rehearse low-power closure on low-power/low-power-verification: transition framing, policy ownership, implementation evidence, and release confidence.

    Transition checklist

    • State transition explicitly named with legal source/target states.

    • Crossing and domain ownership are mapped and agreed.

    • Policy controls are traced to always-on source logic.

    • Waveform bookmarks align controls with state timestamps.

    Review prompts

    1. Which policy object is first to deviate from intent?

    2. Which owner can apply the smallest reversible fix?

    3. What regression matrix proves no collateral damage?

    4. Which waiver conditions would still block release?

    Evidence capsule

    Diagram
    LP EVIDENCE CAPSULE 1
    
    PATH: low-power/low-power-verification
    STATE WINDOW: <from -> to>
    POLICY OBJECT: <isolation / retention / shifter / switch>
    OWNER: <name>
    PRIMARY ARTIFACT: <report/waveform/formal result>
    RELEASE DECISION: <close / bounded waiver / escalate>

    Execution drill pack 2

    Use this pack to rehearse low-power closure on low-power/low-power-verification: transition framing, policy ownership, implementation evidence, and release confidence.

    Transition checklist

    • State transition explicitly named with legal source/target states.

    • Crossing and domain ownership are mapped and agreed.

    • Policy controls are traced to always-on source logic.

    • Waveform bookmarks align controls with state timestamps.

    Review prompts

    1. Which policy object is first to deviate from intent?

    2. Which owner can apply the smallest reversible fix?

    3. What regression matrix proves no collateral damage?

    4. Which waiver conditions would still block release?

    Evidence capsule

    Diagram
    LP EVIDENCE CAPSULE 2
    
    PATH: low-power/low-power-verification
    STATE WINDOW: <from -> to>
    POLICY OBJECT: <isolation / retention / shifter / switch>
    OWNER: <name>
    PRIMARY ARTIFACT: <report/waveform/formal result>
    RELEASE DECISION: <close / bounded waiver / escalate>

    Execution drill pack 3

    Use this pack to rehearse low-power closure on low-power/low-power-verification: transition framing, policy ownership, implementation evidence, and release confidence.

    Transition checklist

    • State transition explicitly named with legal source/target states.

    • Crossing and domain ownership are mapped and agreed.

    • Policy controls are traced to always-on source logic.

    • Waveform bookmarks align controls with state timestamps.

    Review prompts

    1. Which policy object is first to deviate from intent?

    2. Which owner can apply the smallest reversible fix?

    3. What regression matrix proves no collateral damage?

    4. Which waiver conditions would still block release?

    Evidence capsule

    Diagram
    LP EVIDENCE CAPSULE 3
    
    PATH: low-power/low-power-verification
    STATE WINDOW: <from -> to>
    POLICY OBJECT: <isolation / retention / shifter / switch>
    OWNER: <name>
    PRIMARY ARTIFACT: <report/waveform/formal result>
    RELEASE DECISION: <close / bounded waiver / escalate>

    Execution drill pack 4

    Use this pack to rehearse low-power closure on low-power/low-power-verification: transition framing, policy ownership, implementation evidence, and release confidence.

    Transition checklist

    • State transition explicitly named with legal source/target states.

    • Crossing and domain ownership are mapped and agreed.

    • Policy controls are traced to always-on source logic.

    • Waveform bookmarks align controls with state timestamps.

    Review prompts

    1. Which policy object is first to deviate from intent?

    2. Which owner can apply the smallest reversible fix?

    3. What regression matrix proves no collateral damage?

    4. Which waiver conditions would still block release?

    Evidence capsule

    Diagram
    LP EVIDENCE CAPSULE 4
    
    PATH: low-power/low-power-verification
    STATE WINDOW: <from -> to>
    POLICY OBJECT: <isolation / retention / shifter / switch>
    OWNER: <name>
    PRIMARY ARTIFACT: <report/waveform/formal result>
    RELEASE DECISION: <close / bounded waiver / escalate>

    Execution drill pack 5

    Use this pack to rehearse low-power closure on low-power/low-power-verification: transition framing, policy ownership, implementation evidence, and release confidence.

    Transition checklist

    • State transition explicitly named with legal source/target states.

    • Crossing and domain ownership are mapped and agreed.

    • Policy controls are traced to always-on source logic.

    • Waveform bookmarks align controls with state timestamps.

    Review prompts

    1. Which policy object is first to deviate from intent?

    2. Which owner can apply the smallest reversible fix?

    3. What regression matrix proves no collateral damage?

    4. Which waiver conditions would still block release?

    Evidence capsule

    Diagram
    LP EVIDENCE CAPSULE 5
    
    PATH: low-power/low-power-verification
    STATE WINDOW: <from -> to>
    POLICY OBJECT: <isolation / retention / shifter / switch>
    OWNER: <name>
    PRIMARY ARTIFACT: <report/waveform/formal result>
    RELEASE DECISION: <close / bounded waiver / escalate>
    PreviousNext: Power State Verification

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    See also

    • How to Use This Course
    • Low-Power Metrics Reference
    • Low-Power Glossary