set_clock_uncertainty -setup 0.5 [get_clocks clk] set_clock_uncertainty -hold 0.2 [get_clocks clk]
set_fix_multiple_port_nets -all -buffer_constants
write -format verilog -hierarchy -output ./results/top_synth.v
Below is a template you can use to run synthesis in batch mode.
# run_dc.tcl
# 1. Setup
source .synopsys_dc.setup
# 2. Define Design Library
define_design_lib WORK -path ./WORK
# 3. Read Design
analyze -format verilog [glob ./rtl/*.v]
elaborate top_module
current_design top_module
link
check_design
# 4. Constraints
create_clock -name clk -period 5 [get_ports clk]
set_input_delay -max 1 -clock clk [all_inputs]
set_output_delay -max 1 -clock clk [all_outputs]
set_load 0.1 [all_outputs]
set_max_area 0
# 5. Compile
compile_ultra
# 6. Reports
redirect -tee ./reports/timing.rep report_timing
redirect -tee ./reports/area.rep report_area -hierarchy
redirect -tee ./reports/power.rep report_power
# 7. Outputs
change_names -rules verilog -hierarchy
write -format verilog -hierarchy -output ./outputs/top_netlist.v
write_sdc ./outputs/top.sdc
exit
Overview
Strengths
Weaknesses
Usefulness / Who should read it
Practical takeaways (actionable)
Overall rating: 4/5 — strong, practical, and script-oriented tutorial for synthesis engineers using Design Compiler in 2021; best used alongside vendor docs and downstream P&R guidance. synopsys design compiler tutorial 2021
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Synopsys Design Compiler (DC) is the industry-standard logic synthesis tool
used to transform high-level Register Transfer Level (RTL) descriptions (Verilog or VHDL) into optimized gate-level netlists mapped to specific technology libraries. Core Synthesis Flow
The standard synthesis process in Design Compiler follows four primary stages: Synopsys Tutorial: Using the Design Compiler - s2.SMU set_clock_uncertainty -setup 0
The Synopsys Design Compiler (DC) remains the industry standard for logic synthesis, acting as the critical bridge between Register Transfer Level (RTL) code and a physical, gate-level netlist . As of the 2021 era, the toolset includes Design Compiler NXT
, which introduced faster optimization engines and highly accurate RC estimation for advanced nodes like 5nm and below. The Synthesis Flow: From RTL to Netlist
The fundamental goal of Design Compiler is to transform high-level hardware descriptions (Verilog, SystemVerilog, or VHDL) into a technology-specific gate-level representation. This process is governed by four primary stages: ASIC Design Flow Tutorial Using Synopsys Tools
After elaboration, you must resolve references and check the design structure. write -format verilog -hierarchy -output
# Link resolves all instance references to library cells
link
# Check design for issues (e.g., unresolved references, floating ports)
check_design