DFT-PD Handoff: Review Checklist

Review checklist

Review Checklist for DFT-PD Handoff focuses on handoff issue count, late-stage DFT ECO volume, closure turnaround. The goal is to convert metric movement into mechanism, owner, and release decision.

• Run tags and scenario context are explicit.

• Constraints and legality assumptions are documented.

• Quality, timing, and test-power checks are included.

• Diagnosis evidence supports residual-risk decision.

• Owners signed: DFT lead, PD lead, program manager.

Signoff ownership

OWNERSHIP MAP - DFT-PD Handoff

artifact              owner
----------------      -----------------
architecture/report DFT lead
constraints/setup   PD lead
physical/test       program manager

Name an owner for each failing metric cluster.

DFT deep dive

Physical integration quality decides whether DFT architecture survives implementation realities.

Concept diagram

PHYSICAL DFT FLOW

chain planning -> floorplan placement -> route -> test timing/power validation

Metric graph

ROUTING BURDEN

poor chain order -> longer routes -> more hold buffers

Reports and artifacts

• scan physical wirelength

• congestion heatmap

• test clock skew

• handoff issue tracker

Mini case study

Late scan reorder reduced route detours and eliminated a major shift hold cluster before signoff.

Debug branches

• Correlate chain order with congestion

• Place compression logic near chain clusters

• Keep DFT-PD handoff versioned

Senior review question

Ask: what evidence proves this DFT decision is safe for production?

Key takeaways

• State metric, lot/corner context, and pattern tag with every claim.

• Treat timing, power, and quality as one signoff problem.

Common pitfalls

• Chasing coverage without legality checks.

• Ignoring test-power side effects of pattern changes.

• Debugging silicon without reproducible tags.

Principal DFT review addendum

Clear DFT-to-PD contracts for chain rules, test clocks, and legal placement constraints prevent expensive late-stage churn.

Metric: handoff issue count, late-stage DFT ECO volume, closure turnaround