Synopsys Design Compiler Tutorial 2021 -

Introduction: The Heart of Digital Synthesis For over three decades, Synopsys Design Compiler (often abbreviated as dc_shell ) has remained the gold standard for RTL synthesis. If you are an ASIC or FPGA designer, mastering this tool is non-negotiable. While newer versions (2022, 2023, 2024) have added incremental features like better multicore support and cloud integration, the 2021 release represents a mature, stable, and widely adopted version in many production tape-outs.

# .synopsys_dc.setup set search_path [list . /home/designs/rtl /tools/libs/SAED32_EDK/lib/stdcell] set target_library "saed32nm_tt_1p05V_25C.db" set link_library [list "*" $target_library saed32nm_io.db] set symbol_library "saed32nm.sdb" set synthetic_library "dw_foundation.sldb" set hdlin_auto_save_def true set vem_enable false # Disable Visual Environment if running scripts synopsys design compiler tutorial 2021

The synthetic_library for DesignWare is crucial. If you miss this, your multiplier or ALU synthesis will fail. Step 3: Reading the RTL (Two Methods) You can read Verilog, VHDL, or SystemVerilog. For 2021, read_verilog and read_vhdl are stable, but the recommended TCL command is read_file . Method A: Read and Elaborate read_file -format verilog top_module.v alu.v register_file.v current_design top_module link Method B: Analyze & Elaborate (Better for VHDL or mixed) analyze -format verilog -lib WORK top_module.v alu.v elaborate top_module -lib WORK After reading, check for generic mapping: Introduction: The Heart of Digital Synthesis For over

This tutorial is designed for engineers and students who want a practical, step-by-step guide to using Design Compiler (specifically DC 2021.03-SP4). We will move from basic setup to timing closure. Before typing a single command, ensure your environment is ready. The 2021 version introduced stricter TCL 8.6 compliance and deprecated some legacy commands. Environment Variables # In your .bashrc or .cshrc setenv SYNOPSYS_HOME /tools/synopsys/2021.03 setenv PATH $SYNOPSYS_HOME/bin:$PATH setenv SNPSLMD_LICENSE_FILE 27000@license_server setenv LM_LICENSE_FILE 27000@license_server Invocation Launch the tool via the Common UI (recommended for tutorials): Step 3: Reading the RTL (Two Methods) You