Boundary cells, ESD and isolation intent, substrate coupling, and AMS handoff contracts between analog and digital owners.
Start with topic hubs to learn contract and ownership.
Use mechanism and reports pages to map symptoms to root causes.
Use debug and worked-example pages for war-room practice.
Close with checklist and PPA pages before signing any change.
boundary-cell-design/ — Boundary Cell Design
esd-and-isolation/ — ESD & Isolation
noise-coupling-basics/ — Noise Coupling Basics
ams-handoff-contract/ — AMS Handoff Contract
Boundary assumptions must be explicit, versioned, and testable.
BOUNDARY CONTRACT FLOW
analog intent -> boundary implementation -> digital wrapper -> signed reviewBOUNDARY RISK MIX
missing boundary cells ███████
stale handoff assumptions ██████
silent mode changes ████boundary-cell coverage
isolation/ESD review
handoff contract checklist
integration waiver log
Noise bursts traced to missing isolation clamp on one low-power transition mode.
Validate boundary-cell insertion
Diff handoff assumptions
Reproduce with tagged mode sequence
Ask: what boundary condition proves this topic is actually closed?