RDC Signoff Dashboard: Interview Drills

Interview drills

Interview Drills for RDC Signoff Dashboard focuses on RDC critical trend, waiver aging, milestone readiness. The goal is to convert issue observations into mechanism-backed closure decisions.

PROMPT
You see RDC critical trend, waiver aging, milestone readiness in RDC Signoff Dashboard. Explain root cause and signoff decision.

STRONG ANSWER
1. Names crossing/reset class and context.
2. Explains An RDC dashboard tracks readiness across blocks and milestones, preventing unresolved reset risks from being hidden by aggregate pass rates.
3. Requests RDC dashboard snapshot, milestone report, owner action queue.
4. Chooses fix/waiver/escalation with regression plan.

WEAK ANSWER
Lists tool commands or generic advice without mechanism and risk framing.

Diagram to draw on whiteboard

RDC readiness board

milestone M-2: critical 12 -> 4
milestone M-1: critical 4 -> 0
waivers stale >30d: must be reviewed

Debug tree to narrate

ROOT-CAUSE TREE — RDC Signoff Dashboard

crossing failure observed
        |
   reproducible?
     /        \
   no          yes
   |            |
stress mode   classify issue
expansion       /      |      \
            synchronizer protocol reset/reconvergence
                 |         |           |
            MTBF fit    liveness    release ordering

CDC/RDC deep dive

RDC closure must connect IP assumptions to SoC reality.

Concept diagram

RDC CLOSURE

IP reset intent + SoC sequencing -> structural checks -> dynamic stress -> signoff

Metric graph

MILESTONE READINESS

M-2 55%
M-1 82%
M0  100%

Reports and artifacts

• top-level RDC opens

• reset simulation coverage

• chip integration blockers

• waiver backlog

Mini case study

Each IP was locally clean, but top-level sequencing violation created cross-subsystem boot intermittency.

Debug branches

• Audit subsystem assumptions

• stress chip-level reset scenarios

• close ownership gaps

Senior review question

Ask: what evidence proves this risk is closed for silicon, not just tool-clean?

Key takeaways

• State crossing class, assumptions, and owner with every issue.

• Run structural and dynamic regressions after each fix.

Common pitfalls

• Treating all warnings as equivalent risk.

• Waiving issues without containment evidence.

• Skipping reset and reconvergence stress after CDC fixes.

Principal CDC/RDC review addendum

An RDC dashboard tracks readiness across blocks and milestones, preventing unresolved reset risks from being hidden by aggregate pass rates.

Metric: RDC critical trend, waiver aging, milestone readiness