VLSI Synthesis for Digital Design.

Digital design Synthesis for VLSI applications: Its a EDA technique to map high level behavioral designs into gates. Behavioral designs are coded in Register Transfer Level languages like Verilog, VHDL etc.

Introduction to VLSI - Discussed on this page

Role of synthesis in digital chip design.

Discussion on various synthesis stages.

Synthesis: Pre-possessing of the design. (Syntax check, compile and elaboration.)

Design constraints for digital design.

How to implement a cell from vendor library. Using Integrated Clock Gating (ICG) cell as an example.

Constant Propagation is an optimization technique employed by synthesis tools to minimize hardware implementation.

As you understand a Flop to Flop path is critical for timing, lets discuss setup time, hold time and metastability.

Now lets understand clock domain crossing across two asynchornous clock domains. 

PLL's discssion - Phase Locked Loop. Follow this section for PLL’s for ASIC, FPGA configuration.

CMOS in VLSI - Parasitics, Crosstalk and Ground Bounce.

LTE - 4G Wireless Technology

Digital fundamentals.

Interview Questions.

Introduction to VLSI 

When its appropriate to take RTL through Synthesis?

The design is ready for synthesis when its functional behavior is well understood in code and it simulates without any issues. Feedback from synthesis reports helps in clearing out issues in code and it also helps in code optimization.

The synthesized gates are distributed over an assigned area and are connected with wires. This synthesized gate level abstraction or net list is then optimized in several steps to attain faster speed, low area, low power and test-ability.

Flowchart below shows the different stages of digital synthesis for ASIC’s/FPGA’s.

VLSI synthesis digital design.

Tutorials @fullchipdesign.com

Verilog Tutorial.

LTE Tutorial.

Memory Tutorial.

Post synthesis RTL logic gets mapped into gates. So following gate level concepts play a critical role in post synthesis analysis.

How to implement Universal NAND Gate.
Derive AND gate from NAND gate.
Derive OR gate from NAND gate
Derive XOR gate from NAND gate.

Solved examples for 3 variable Kmaps
1. F(x,y,z) = Σ(0,1,6,7) - Minimization, on this page.
2. F(x,y,z) = Σ(0,1,4,5,6,7) - Minimization from here.
3. F(x,y,z) = Σ(3,4,6,7) - Minimization from here.
4. F(x,y,z) = Σ(0,1,2,3,4,5,6,7) Minimization from here.

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