SoC Integration · All levels

Bump Map & Escape Planning: Step-by-Step Walkthrough

Step-by-Step Walkthrough for Bump Map & Escape Planning.

Step-by-step analysis walkthrough

Use when you own Bump Map & Escape Planning in a top-level integration review.

Open latest integration baseline and manifest.
Inspect failing metric by domain.
Trace first failing contract boundary.
Collect artifacts and assign single-thread owner.
Define minimal proof experiment.
Apply smallest reversible fix.
Run focused check then full regression.
Update dashboard and governance log.
Decide: close, waive with expiry, or escalate.
Publish final review memo.

Artifacts to collect

bump map revision, escape routing plan, package feasibility report
baseline manifest
owner matrix
regression summary
risk memo

Decision memo template

diagram

SOC DECISION MEMO — Bump Map & Escape Planning
baseline:
metric:
root cause:
fix:
residual risk:
owners: package owner, top-level PD owner, power integrity owner

Reference visuals

Bump escape planning

diagram

BUMP + ESCAPE

die bumps -> redistribution -> package balls
      |             |
   power grid    high-speed lane escape

Early escape planning prevents late route deadlock.

SoC deep dive

Package assumptions must be treated as first-class chip constraints.

Concept diagram

diagram

PACKAGE CO-DESIGN
die io <-> package routing <-> board constraints

Metric graph

diagram

PACKAGE RISK MIX
SI margin █████
power integrity ████
lane mapping ███

Reports and artifacts

bump map revision log
SI/PI margin report
IO co-design checklist
package bring-up failures

Mini case study

Link degradation on product board came from package routing assumptions not reflected in pre-silicon model.

Debug branches

Compare package model versions
Audit lane mapping
Correlate SI/PI margins to failures

Senior review question

Ask: what baseline, owner, and artifact prove this topic is truly closed?

Key takeaways

State baseline manifest and owner with every closure metric.
Run cross-domain regression after every top-level fix.

Common pitfalls

Comparing results across different manifests.
Unowned issues slipping through review cycles.
Waiving risks without expiry and validation plan.

Principal SoC review addendum

Bump maps and escape strategy determine routability, IR quality, and package feasibility before final pad-ring freeze.

Metric: bump congestion, reroute churn, escape DRC violations

Practice this lesson