Engineering Change Orders

ECO types, unconstrained and metal-only flows, signoff-driven ECO, spare cells, timing fixes and verification

12 chapters · All content free to read

1. Ch 1What Is an Engineering Change Order?
2. Ch 2Types of ECO and When to Use Each
3. Ch 3The Unconstrained (Pre-Tapeout) ECO Flow
4. Ch 4The Constrained / Metal-Only ECO Flow
5. Ch 5The Signoff-Driven ECO Loop
6. Ch 6Spare Cells: Provisioning for Future ECOs
7. Ch 7Applying Changes: Change-File vs Interactive Editing
8. Ch 8Local Timing Fixes: Resizing, Buffering & Fanout
9. Ch 9Buffering Routed Nets & Group Repeater Insertion
10. Ch 10Placing & Legalizing ECO Cells
11. Ch 11Power- & Multivoltage-Aware ECO
12. Ch 12Verifying, Recording & Reverting ECOs