chip design

What is it?

Chip design is the process of turning an intended function into a manufacturable layout: architecture definition, register-transfer-level (RTL) description, verification, logic synthesis, design-for-test (DFT), physical design, timing closure, and — where the chip is not purely digital — analog and mixed-signal design and IP integration.

How does it work?

Design typically moves from architecture (what the chip must compute and at what performance/power budget) to RTL, a hardware description (in languages like Verilog or VHDL) of the digital logic's behavior at the register level. Verification checks that RTL matches intent through simulation, formal methods, and increasingly emulation, before synthesis translates RTL into a gate-level netlist mapped to a specific manufacturing library. DFT inserts structures (scan chains, built-in self-test) so the finished chip can be tested for manufacturing defects after fabrication. Physical design places and routes that netlist into real geometry on the die, and timing closure iterates the layout until every signal path meets its speed target under worst-case conditions. Analog and mixed-signal blocks (I/O, power management, data converters) are designed by hand-tuning transistor-level circuits rather than through synthesis, and third-party or internally reused IP blocks are integrated alongside the custom logic.

Why does it matter?

Design is where a specification becomes something that can actually be manufactured — and where the overwhelming majority of a chip's power, performance, and area characteristics are locked in, long before a wafer is exposed to light.

How does it connect to the next layer?

A finished, verified layout is still just a file. Wafer manufacturing covers how that layout becomes physical silicon.