Mapping & Optimization

Section goal

Technology mapping, structuring and buffering, timing-driven compile, and mapping debug playbooks.

How to study this section

1. Start with each topic hub to understand mechanism and ownership.

2. Use reports and debug pages to build run-comparison instincts.

3. Use interview and case pages for pressure drills.

4. Close with checklist and PPA impact before merge decisions.

Topics

1. technology-mapping/ — Technology Mapping

2. structuring-and-buffering/ — Structuring & Buffering

3. timing-driven-synth/ — Timing-Driven Synthesis

4. mapping-debug/ — Mapping Debug

Related topics

• Synthesis course hub

Synthesis deep dive

Mapping converts logic intent into real PPA outcomes.

Concept diagram

MAPPING LOOP

boolean net -> library mapping -> optimization -> report and iterate

Metric graph

MAPPING IMPACT

depth reduction   ███████
fanout cleanup    █████
runtime overhead  ███

Reports and artifacts

• mapping summary

• critical path cell list

• fanout/slew report

• library coverage

Mini case study

Cell-heavy critical path improved after restructuring, while blanket buffering had worsened power.

Debug branches

• Depth issue -> structure

• Fanout issue -> buffers

• Library mismatch -> view audit

Senior review question

Ask: what evidence proves this QoR move is real and stable?