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Course contents

  • How to Use This Course
  • The NanoSoC Tour
  • Reading Path
  • SoC Glossary10
  • SoC Metrics Reference
  • SoC Cheatsheet
  • What SoC Integration Is12
  • Architecture and Budgets21
  • Memory Maps and Address Decode26
  • Interconnect and Bus Fabrics26
  • Clock and Reset Architecture24
  • Power Architecture21
  • Interrupts, DMA and Peripherals15
  • Memories, Boot and Security21
  • IP Integration and Handoff21
  • Top-Level Verification and Bring-up21
  • Package, Pads and I/O18
  • Chip Signoff and Tapeout18
    • The Signoff Manifest
    • Waiver Governance
    • Closure Dashboards
      • The Metrics That Matter
      • Building the Dashboard
      • Reading the Trend
    • Tapeout Readiness Review
    • ECO and Respin Risk
    • Errata and Post-Silicon
  • SoC Interview Prep16
  • Capstone: Integrate NanoSoC14
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←Chip Signoff and Tapeout
  1. Topics
  2. SoC Design
  3. Chip Signoff and Tapeout
  4. Closure Dashboards

Part 12 of 14Part 12 of 14/Chip Signoff and TapeoutAll levels

Closure Dashboards

One honest page per chip: metrics across every discipline, how to read it, and the trend that predicts tapeout.

  • 3topics
  • 3lessons

The dashboard is the manifest compressed to one page: every discipline reduced to red, amber or green, with the counts behind each colour one click away. Managers read it in thirty seconds; the integrator reads it for thirty minutes, because a green built on waivers about to expire is not the same as a green built on clean checks. This topic builds the NanoSoC dashboard, teaches how to read one honestly, and shows the burn-down trend that predicts whether the date holds. Its one job is the summary and its honesty; the meeting that acts on it is the next topic.

Lesson

After it you can...

The Metrics That Matter

Name the one headline metric per discipline, the evidence behind it, and the usual way it is made to look green when it is not.

Building the Dashboard

Roll eight discipline reports into one page with a script that can fail.

Reading the Trend

Call the signoff-complete date from the burn-down slope, and spot a stalled discipline.

Suggested order: top to bottom. Metrics first, because the roll-up only works if each input is honest; then the script; then the trend. For the owner-side dashboards this one summarises, see Closure Metrics Dashboard, Timing Signoff Dashboard, Power Signoff Dashboard and the CDC and RDC dashboards in the CDC course.

Check yourself Two chips both show eight green disciplines. One taped out cleanly, the other respun. What differed?

What the greens were built on: clean checks against the baseline, or waivers, stale results and exceptions. The dashboard must show the composition of each green, not just its colour.

If asked how you know a chip is ready, do not recite colours: name the metric per discipline, the evidence behind each, and the slope of the burn-down.

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See also

  • The Signoff Manifest
  • Waiver Governance
  • Tapeout Readiness Review