Process / geometry
Package interconnect assumptions
Abstract package length, loading, and return-path states define an educational starting point.
packaging-geometry-stateCurated evidence path
Packaging parasitics to system margin
Follow a bounded package RLC budget into electrical response, then stop before a product bandwidth, timing, SI, or qualification claim.
Review question
What extraction and measurement evidence is missing between a package proxy and system behavior?Permanent path link
- Nodes
- 4
- Bridge edges
- 2
- Stop edges
- 1
- Measured causal edges
- 0
Evidence classes
Read the label before the color.
- ProxyA proxy is not a physical prediction, calibration result, measurement, or causal proof.
- DerivedA derived result inherits every input and model assumption and is not measured evidence.
- ReproducedReproduction establishes the stated run result, not measured-silicon agreement or transfer to another context.
- MeasuredA measurement supports only its declared grain and conditions; it does not automatically prove cross-domain causality.
Ordered evidence chain
Follow each handoff. Stop at the stop.
Node order and edge fields are fixed by the V123 contract. No page interaction generates, ranks, or extends this chain.
- Derived evidence
Evidence bridge
package geometry to R/L/C
- Edge ID
- packaging-geometry-to-rlc
- From node
- packaging-geometry-state
- To node
- packaging-rlc-budget
- Unit or category
- ohm / henry / farad category
- Evidence class
- Derived
- Status
- Bridge
- Assumption
- The precomputed model uses educational geometry and coefficients rather than a field-solver or extracted package stack.
- Bridge condition
- Use only under the displayed abstract geometry and model boundary.
- Limitation
- No material stack, frequency dependence, return path, connector, via field, mutual coupling, loss tangent, convergence, or manufacturing variation is qualified.
- Measured replacement slot
- Owned package geometry and material stack with extraction deck, solver convergence, frequency sweep, calibration structures, uncertainty, and versioned provenance.
- Deep link
- Open this exact edge
Source artifacts
Device metric
RLC budget
The public package model derives bounded resistance, inductance, and capacitance teaching values.
packaging-rlc-budgetDerived evidenceEvidence bridge
RLC budget to electrical response
- Edge ID
- packaging-rlc-to-response
- From node
- packaging-rlc-budget
- To node
- packaging-electrical-response
- Unit or category
- delay / ringing / coupling category
- Evidence class
- Derived
- Status
- Bridge
- Assumption
- The package RLC, layout-RC, and crosstalk artifacts are separate educational models without a shared extracted channel.
- Bridge condition
- Compare mechanisms only; do not combine their numeric outputs as one channel result.
- Limitation
- No driver/receiver model, impedance profile, frequency-dependent loss, power distribution network, package-board correlation, or measured waveform closes the bridge.
- Measured replacement slot
- Correlated package-board extraction, IBIS or transistor models, channel topology, calibration, TDR/VNA or waveform measurement, corners, and uncertainty.
- Deep link
- Open this exact edge
Circuit behavior
Edge, ringing, crosstalk, or IR question
RLC and layout-RC artifacts frame electrical sensitivity under independent assumptions.
packaging-electrical-responseProxy evidenceEvidence stop
electrical response to system margin
- Edge ID
- packaging-response-to-system-stop
- From node
- packaging-electrical-response
- To node
- packaging-system-stop
- Unit or category
- unsupported timing / bandwidth category
- Evidence class
- Proxy
- Status
- Stop
- Assumption
- No V122 metric contract connects the teaching response to a product workload, interface specification, or qualification result.
- Bridge condition
- Stop before bandwidth, latency, bit-error, timing closure, SI signoff, thermal release, reliability, or product ranking.
- Limitation
- An RLC or crosstalk proxy cannot establish end-to-end channel performance or manufactured product behavior.
- Measured replacement slot
- Qualified package-board-channel model and measured correlation with interface conditions, workload, BER or timing metric, corners, variation, uncertainty, and accountable signoff.
- Deep link
- Open this exact edge
Source artifacts
Evidence stop
Stop before system performance
No extracted package-board-channel and measured I/O correlation supports a product timing, bandwidth, or reliability statement.
packaging-system-stop
Path boundary
This path does not prove causality.
The navigator presents curated associations, assumptions, evidence classes, and replacement needs. It does not prove physical or statistical causality.
A stop is a product requirement, not missing UI. The page must not fill a stopped bridge with extrapolation, AI text, a recipe, an equipment setting, or an operating recommendation.
No public path authorizes process changes, equipment control, wafer disposition, qualification, signoff, product ranking, or production release.
Return to all causal chains