Clock/reset choices trade robustness, testability, and closure margin.
+------------------+----------------+----------------+----------------+
| Approach | Strength | Weakness | Best when |
+------------------+----------------+----------------+----------------+
| Strict | predictable | slower early | new program |
| Balanced | practical | needs rigor | stable teams |
| Aggressive | fast | escape risk | late schedule |
| Re-architect | durable | expensive | recurring failures |
+------------------+----------------+----------------+----------------+Pick the approach based on residual silicon risk, not only schedule pressure.
Policy-only arguments without artifact evidence
Unbounded waivers
INTEGRATION EVIDENCE MATRIX — Top Clock Tree Architecture
+-------------------+------------------------+--------------------------+-------------------------+
| Evidence | Tells you | Does not prove | Next action |
+-------------------+------------------------+--------------------------+-------------------------+
| Manifest diff | baseline changed | root cause itself | isolate first delta |
| Domain trace | where behavior diverged| ownership accountability | map to contract owner |
| Signoff dashboard | closure posture | reproducibility quality | verify source artifacts |
| Bring-up logs | software-visible symptom| physical/timing cause | correlate with HW trace |
| Waiver register | accepted residual risk | technical closure | review expiry criteria |
+-------------------+------------------------+--------------------------+-------------------------+Clock/reset assumptions must be globally consistent across functional and test modes.
CLOCK/RESET FLOW
pll lock -> clock enable -> reset release -> domain readyBOOT STABILITY
stable boots ████████
reset hangs ███clock architecture report
reset release timing
mode matrix
boot trace summary
Intermittent boot hang traced to one domain releasing reset before dependent clock was stable.
Check mode-specific constraints
Trace reset dependencies
Correlate firmware sequencing
Ask: what baseline, owner, and artifact prove this topic is truly closed?
State baseline manifest and owner with every closure metric.
Run cross-domain regression after every top-level fix.
Comparing results across different manifests.
Unowned issues slipping through review cycles.
Waiving risks without expiry and validation plan.
Clock architecture partitions domains, generated clocks, and distribution strategy so top-level timing remains tractable under MMMC and PVT spread.
Metric: clock skew budget, insertion delay, CTS closure rate
This content block can't be displayed here.
Block type: unknown
This content block can't be displayed here.
Block type: unknown
This content block can't be displayed here.
Block type: unknown