Use when you own Isolation Coverage in a low-power closure war room.
Open failing LP test and capture transition window.
Map source/destination domains and state at failure point.
Check isolation/retention/level-shifter policies on that crossing.
Verify PMU ordering against spec.
Check implementation reports for physical legality.
Run root-cause branch: intent vs sequence vs physical.
Patch minimal owner-controlled change.
Run focused test then full LP matrix.
Update signoff dashboard and closure note.
isolation coverage database, crossing-to-policy trace, and closure summary
UPF revision
PMU sequence trace
state coverage report
waiver ledger
LOW-POWER DECISION MEMO — Isolation Coverage
state transition:
observed metric:
root cause:
fix:
regression:
owners: verification owner, UPF owner, architecture ownerISOLATION COVERAGE
crossings total : 812
policy-bound : 812
activated in tests : 789
clamp-verified : 774
open items : 38
Coverage must close both existence and activation.Transition-centric verification closes LP risk better than active-mode-centric regressions.
VERIFY LOOP
transition matrix -> simulation + formal -> coverage -> closureCOVERAGE CLOSURE
state transitions covered ███████████
isolation activation █████████
retention restore paths ████████state coverage
formal LP properties
isolation coverage
LP bug triage dashboard
Coverage looked high, but one untested OFF->RUN transition hid a restore race.
Rank by transition criticality
Correlate PMU logs with failures
Escalate unproven properties
Ask: what transition evidence proves this topic is closed, and which owner signs it?
State transition context must accompany every low-power metric claim.
Intent changes require simulation, formal, and implementation re-validation.
Comparing results from mismatched UPF revisions.
Assuming static checks replace transition validation.
Shipping with aged waivers and unclear ownership.
Use this pack to rehearse low-power closure on low-power/low-power-verification/isolation-coverage/step-by-step-walkthrough: transition framing, policy ownership, implementation evidence, and release confidence.
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.
Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?
LP EVIDENCE CAPSULE 1
PATH: low-power/low-power-verification/isolation-coverage/step-by-step-walkthrough
STATE WINDOW: <from -> to>
POLICY OBJECT: <isolation / retention / shifter / switch>
OWNER: <name>
PRIMARY ARTIFACT: <report/waveform/formal result>
RELEASE DECISION: <close / bounded waiver / escalate>Use this pack to rehearse low-power closure on low-power/low-power-verification/isolation-coverage/step-by-step-walkthrough: transition framing, policy ownership, implementation evidence, and release confidence.
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.
Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?
LP EVIDENCE CAPSULE 2
PATH: low-power/low-power-verification/isolation-coverage/step-by-step-walkthrough
STATE WINDOW: <from -> to>
POLICY OBJECT: <isolation / retention / shifter / switch>
OWNER: <name>
PRIMARY ARTIFACT: <report/waveform/formal result>
RELEASE DECISION: <close / bounded waiver / escalate>Use this pack to rehearse low-power closure on low-power/low-power-verification/isolation-coverage/step-by-step-walkthrough: transition framing, policy ownership, implementation evidence, and release confidence.
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.
Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?
LP EVIDENCE CAPSULE 3
PATH: low-power/low-power-verification/isolation-coverage/step-by-step-walkthrough
STATE WINDOW: <from -> to>
POLICY OBJECT: <isolation / retention / shifter / switch>
OWNER: <name>
PRIMARY ARTIFACT: <report/waveform/formal result>
RELEASE DECISION: <close / bounded waiver / escalate>Use this pack to rehearse low-power closure on low-power/low-power-verification/isolation-coverage/step-by-step-walkthrough: transition framing, policy ownership, implementation evidence, and release confidence.
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.
Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?
LP EVIDENCE CAPSULE 4
PATH: low-power/low-power-verification/isolation-coverage/step-by-step-walkthrough
STATE WINDOW: <from -> to>
POLICY OBJECT: <isolation / retention / shifter / switch>
OWNER: <name>
PRIMARY ARTIFACT: <report/waveform/formal result>
RELEASE DECISION: <close / bounded waiver / escalate>Use this pack to rehearse low-power closure on low-power/low-power-verification/isolation-coverage/step-by-step-walkthrough: transition framing, policy ownership, implementation evidence, and release confidence.
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.
Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?
LP EVIDENCE CAPSULE 5
PATH: low-power/low-power-verification/isolation-coverage/step-by-step-walkthrough
STATE WINDOW: <from -> to>
POLICY OBJECT: <isolation / retention / shifter / switch>
OWNER: <name>
PRIMARY ARTIFACT: <report/waveform/formal result>
RELEASE DECISION: <close / bounded waiver / escalate>Use this pack to rehearse low-power closure on low-power/low-power-verification/isolation-coverage/step-by-step-walkthrough: transition framing, policy ownership, implementation evidence, and release confidence.
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.
Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?
LP EVIDENCE CAPSULE 6
PATH: low-power/low-power-verification/isolation-coverage/step-by-step-walkthrough
STATE WINDOW: <from -> to>
POLICY OBJECT: <isolation / retention / shifter / switch>
OWNER: <name>
PRIMARY ARTIFACT: <report/waveform/formal result>
RELEASE DECISION: <close / bounded waiver / escalate>Use this pack to rehearse low-power closure on low-power/low-power-verification/isolation-coverage/step-by-step-walkthrough: transition framing, policy ownership, implementation evidence, and release confidence.
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.
Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?
LP EVIDENCE CAPSULE 7
PATH: low-power/low-power-verification/isolation-coverage/step-by-step-walkthrough
STATE WINDOW: <from -> to>
POLICY OBJECT: <isolation / retention / shifter / switch>
OWNER: <name>
PRIMARY ARTIFACT: <report/waveform/formal result>
RELEASE DECISION: <close / bounded waiver / escalate>Use this pack to rehearse low-power closure on low-power/low-power-verification/isolation-coverage/step-by-step-walkthrough: transition framing, policy ownership, implementation evidence, and release confidence.
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.
Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?
LP EVIDENCE CAPSULE 8
PATH: low-power/low-power-verification/isolation-coverage/step-by-step-walkthrough
STATE WINDOW: <from -> to>
POLICY OBJECT: <isolation / retention / shifter / switch>
OWNER: <name>
PRIMARY ARTIFACT: <report/waveform/formal result>
RELEASE DECISION: <close / bounded waiver / escalate>Use this pack to rehearse low-power closure on low-power/low-power-verification/isolation-coverage/step-by-step-walkthrough: transition framing, policy ownership, implementation evidence, and release confidence.
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.
Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?
LP EVIDENCE CAPSULE 9
PATH: low-power/low-power-verification/isolation-coverage/step-by-step-walkthrough
STATE WINDOW: <from -> to>
POLICY OBJECT: <isolation / retention / shifter / switch>
OWNER: <name>
PRIMARY ARTIFACT: <report/waveform/formal result>
RELEASE DECISION: <close / bounded waiver / escalate>Use this pack to rehearse low-power closure on low-power/low-power-verification/isolation-coverage/step-by-step-walkthrough: transition framing, policy ownership, implementation evidence, and release confidence.
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.
Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?
LP EVIDENCE CAPSULE 10
PATH: low-power/low-power-verification/isolation-coverage/step-by-step-walkthrough
STATE WINDOW: <from -> to>
POLICY OBJECT: <isolation / retention / shifter / switch>
OWNER: <name>
PRIMARY ARTIFACT: <report/waveform/formal result>
RELEASE DECISION: <close / bounded waiver / escalate>Use this pack to rehearse low-power closure on low-power/low-power-verification/isolation-coverage/step-by-step-walkthrough: transition framing, policy ownership, implementation evidence, and release confidence.
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.
Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?
LP EVIDENCE CAPSULE 11
PATH: low-power/low-power-verification/isolation-coverage/step-by-step-walkthrough
STATE WINDOW: <from -> to>
POLICY OBJECT: <isolation / retention / shifter / switch>
OWNER: <name>
PRIMARY ARTIFACT: <report/waveform/formal result>
RELEASE DECISION: <close / bounded waiver / escalate>Use this pack to rehearse low-power closure on low-power/low-power-verification/isolation-coverage/step-by-step-walkthrough: transition framing, policy ownership, implementation evidence, and release confidence.
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.
Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?
LP EVIDENCE CAPSULE 12
PATH: low-power/low-power-verification/isolation-coverage/step-by-step-walkthrough
STATE WINDOW: <from -> to>
POLICY OBJECT: <isolation / retention / shifter / switch>
OWNER: <name>
PRIMARY ARTIFACT: <report/waveform/formal result>
RELEASE DECISION: <close / bounded waiver / escalate>Use this pack to rehearse low-power closure on low-power/low-power-verification/isolation-coverage/step-by-step-walkthrough: transition framing, policy ownership, implementation evidence, and release confidence.
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.
Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?
LP EVIDENCE CAPSULE 13
PATH: low-power/low-power-verification/isolation-coverage/step-by-step-walkthrough
STATE WINDOW: <from -> to>
POLICY OBJECT: <isolation / retention / shifter / switch>
OWNER: <name>
PRIMARY ARTIFACT: <report/waveform/formal result>
RELEASE DECISION: <close / bounded waiver / escalate>Coverage must prove every required crossing is isolated under relevant OFF states and that clamps match downstream protocol assumptions.
Metric: isolation activation coverage, clamp-value observability, and crossing protection completeness
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