# Define output directory file mkdir ./outputs # Write out the structural gate-level netlist (Verilog format) write -format verilog -hierarchy -output ./outputs/top_module.v # Write out internal database format for Synopsys ecosystem tools write -format ddc -hierarchy -output ./outputs/top_module.ddc # Export Synopsys Design Constraints file for Placement and Routing write_sdc ./outputs/top_module.sdc # Export Standard Delay Format file for gate-level simulation validation write_sdf ./outputs/top_module.sdf Use code with caution. 8. Complete Synthesis Run-Script Template
# Create clean work directory file mkdir ./WORK define_design_lib WORK -path ./WORK # Analyze the RTL source files (Syntax check) analyze -format systemverilog alu.sv control_unit.sv top_module.sv # Elaborate the top-level design (Builds hierarchy and generic logic) elaborate top_module # Set current design context current_design top_module # Check design for warnings, unresolved references, or synthesis traps link check_design Use code with caution.
project_root/ ├── rtl/ # Source HDL files (.v, .sv) ├── scripts/ # Tcl synthesis scripts ├── libs/ # Technology library files (.db, .lib) ├── work/ # Active tool execution directory └── output/ # Generated netlists, SDC, and reports ├── netlist/ └── reports/ Use code with caution. Initializing the Environment synopsys design compiler tutorial 2021
You must analyze the post-synthesis reports generated by Design Compiler to verify that your layout meets timing, area, and power metrics before physical design. Essential Reporting Commands
set_driving_cell -lib_cell AND2_X1 [get_ports data_in*] # Define output directory file mkdir
# Save the synthesized design write -format ddc -hierarchy -output outputs/final.ddc
: Contains the standard cells used for mapping your design (e.g., AND, OR gates). 2. Choosing Your Interface offers two primary ways to interact with the compiler: project_root/ ├── rtl/ # Source HDL files (
: If your Worst Negative Slack (WNS) is below zero, your design fails timing targets. Remedy this by applying the compile_ultra -incremental command to execute fine-grained gate sizing optimization. Alternatively, use architectural pipelining in your source RTL code.
The technology cell library ( .db format) used for building the gate netlist.