Synthesis

• Synthesis means to properly put together so as to make the whole complex design.

• At this stage it is necessary to specify the target device, since the synthesis tool (again dedicated software) requires knowing the resources available with the target device.

• Synthesis optimally maps the design functionality (at the gate-level) in to the actual devices available with the target device.

• For example if the design uses a four- input AND gate but since this is not available with the target device, the synthesis tool can break down the four- input AND gate into two two-input AND gates and map correspondingly.

• Optimization is very important otherwise the design may get “blown-up” and the target device may prove too small for the design.

• Synthesis tools have built-in proprietary algorithms for optimization.

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