SDC Constraints • Chapter 02

Chapter 02: Clock Constraints

Primary clock creation (create_clock), clock waveforms, period, duty cycle, clock latency, uncertainty, and transition constraints.

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Authored by VLSI Veteran (9+ Years Experience)

Practical physical design signoff insights, real Primetime flows, and interview preparation.

💡 Key Technical Topics Covered

create_clock Command Parameters
Clock Latency (Source vs Network Latency)
Clock Uncertainty & Jitter Constraints
Clock Transition Slew Constraints

🎯 VLSI Physical Design Interview Questions Addressed

How do you constrain a clock with 40/60 duty cycle in SDC?
What is the difference between set_clock_latency and set_clock_uncertainty?
How does clock uncertainty change pre-CTS vs post-CTS?

← Chapter 01: SDC Fundamentals Chapter 03: Generated Clocks →