Chiplet-Interconnect Interoperability Director — Telecom Silicon

The mandate

A telecom platform combines internal packet-processing die with third-party acceleration and I/O chiplets over a standards-aligned die-to-die link, yet engineering samples interoperate only under narrow presets. Link training, lane repair, power-state entry and error telemetry behave differently across vendors, while package loss and clock assumptions are embedded in private models. The defined problem is to prove substitutability at the platform boundary without reducing interoperability to one curated demonstration pair.

The deliverables are an interface-conformance matrix, reference package and channel models, protocol and PHY test plan, training-state observability design, error-injection suite, power-transition evidence, multi-vendor plugfest, exception process and accepted qualification dossier. Every result must bind die revision, firmware, package route, temperature, voltage and negotiated capability. Supplier-specific workarounds require named retirement conditions rather than being relabelled optional behaviour.

Four milestones govern six months: disputed requirement and channel baseline by 30 October 2026; conformance harness, observability and reference-pair evidence by 18 December; witnessed three-vendor plugfest with fault and power-state testing by 19 February 2027; and accepted platform limits, supplier actions and client-led rerun by 31 March. Milestone reports include failed negotiations and raw link telemetry, not only final throughput.

Acceptance requires architecture to resolve normative ambiguities, package teams to reproduce channel assumptions, firmware to recover injected link faults and qualification engineers to exchange one chiplet without hidden manual tuning. The sponsor returns a consolidated interface-defect register within six working days. Passing traffic after a fixed override cannot satisfy acceptance when capability discovery, degraded width, retry or error attribution remains inconsistent.

The client provides interface specifications, compliant test access, die and firmware revisions, package vehicles, channel models, laboratory capacity, supplier contacts and authorised failure injection. It funds agreed plugfest samples and protects proprietary traces. The director cannot certify conformance for the market, mandate supplier IP disclosure, release silicon or negotiate commercial licences; accountable client leaders retain those decisions.

Why this is external work

Each chiplet supplier can demonstrate its own endpoint, but genuine interoperability lives in ambiguous behaviour between independently designed implementations. Internal platform teams also depend commercially on the vendors whose exceptions they must challenge. An external director can create neutral evidence and exit when the client reproduces a bounded substitution without specialist intervention.

What you will own

• Reconcile normative and optional behaviour across protocol, PHY, sideband, discovery, training, power management and error reporting.
• Define package and channel reference conditions covering insertion loss, crosstalk, skew, clocking, power noise and temperature.
• Build conformance and stress sequences for lane degradation, retry, reset, hot states, capability mismatch and surprise removal.
• Establish observability that connects negotiation, analogue margin, protocol recovery, firmware decision and workload consequence.
• Govern the multi-vendor plugfest using controlled configurations, blinded substitutions, preserved failures and fair defect ownership.
• Separate acceptable implementation diversity from private overrides that create permanent pairing or firmware dependence.
• Deliver accepted interoperability limits, supplier defects, regression assets, exception expiries and client-led substitution evidence.

Candidate qualifications

• Directed chiplet, high-speed serial or multi-vendor silicon-interface qualification through physical and protocol layers.
• Can evidence an implementation pair that passed nominal traffic but failed discovery, recovery or power-state interoperability.
• Understands UCIe or comparable die-to-die protocols, PHY margin, package channels, training and error containment.
• Has run neutral plugfests where suppliers protected IP yet exposed sufficient evidence for defect resolution.
• Translated standards ambiguity into executable conformance tests without inventing a proprietary market certification.
• Leaves reusable client regressions rather than a specialist-controlled laboratory configuration or supplier accommodation.

Non-negotiables

• Will attend Austin, San Jose and Taipei integration and plugfest sessions in the milestone plan.
• Has personally diagnosed interoperability across independently designed silicon endpoints and production-relevant packages.
• Accepts milestone rejection when passing traffic depends on undocumented presets or supplier-specific manual tuning.
• Will disclose interface-IP, EDA, foundry, OSAT and chiplet-vendor relationships before engagement.

1. 49 words maximum. Which nominally compliant interface failed only when two independent implementations negotiated dynamically?
2. 49 words maximum. How would you distinguish a package-channel failure from a protocol recovery defect?
3. 49 words maximum. What plugfest evidence proves substitutability rather than a curated vendor pairing?