Synopsys Design Compiler Tutorial 2021 Portable Review
Nets like resets or scan-enables with high fanout cause major delay and transition violations. Use buffering trees during synthesis to fix these issues. set_max_fanout 20 [current_design] Use code with caution. Customizing Optimization Priority
| Step | Command | Function | Example | | :--- | :--- | :--- | :--- | | | read_verilog analyze & elaborate | Reads your HDL files (Verilog/VHDL) into the DC session. | read_verilog top_module.v analyze -format verilog top_module.v elaborate top_module | | 2. Specify Environment | set_operating_conditions set_wire_load_model | Models the external operating conditions (PVT: Process, Voltage, Temperature) and estimates the parasitic capacitance and resistance of interconnects. | set_operating_conditions -max worst -min best set_wire_load_model -name "ForQA" | | 3. Set Constraints | create_clock set_input_delay set_output_delay set_max_area | Defines the design's performance and design rule goals (clock speed, input/output delays, max area). | create_clock -period 10 [get_ports clk] set_input_delay 5 -clock clk [all_inputs] | | 4. Compile Design | compile_ultra | Performs the core logic synthesis—translating RTL to generic logic (GTECH), optimizing it, and mapping it to target library cells. | compile_ultra -timing | | 5. Report & Save | report_timing report_area report_power write -format verilog | Generates critical design reports and writes out the final synthesized netlist and timing constraints. | report_timing -path full write -format verilog -hierarchy -output final_netlist.v | synopsys design compiler tutorial 2021
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