The Design Flow
A typical VLSI flow moves through:
- Specification and architecture.
- RTL design in hardware description languages.
- Functional verification.
- Synthesis into logic gates.
- Physical design — placement, routing, timing closure.
- Signoff and fabrication handoff.
Why Verification Is So Large
Across most modern chips, verification effort exceeds design effort. This is because:
- Silicon bugs are extremely expensive.
- Coverage must be demonstrated, not assumed.
- Corner cases matter more than average behaviour.
Skills That Compound
- Strong digital logic fundamentals.
- Comfort with at least one HDL (Verilog or VHDL).
- Scripting for automation.
- Careful, patient debugging habits.
VLSI rewards depth. Engineers who invest in fundamentals early tend to move steadily into progressively deeper roles across their careers.