path_adjust is used to either relax or tighten the timing constraints (even though defined by path_delay). e.g to relax the constraints by 100ps rc:>/ path_adjust -from [all_inputs] -to [all_outputs] -delay 100 -name pa_i2o e.g to tighten the constraints by 100ps rc:>/ path_adjust -from [all_inputs] -to $all_registers -delay 100 -name pa_i2r path_adjust is thus use to …
Tag Archives: rtl-compiler
Power aware synthesis
Tips for power aware synthesis with RTL compiler by using dynamic switching activities from a VCD file. The testbench must include the following lines to get all the lower-level signals listed on the VCD $dumpfile (“test.vcd.gz”); $dumpvars (0, testbench.module_tb); Synthesis script set_attr lp_power_analysis_effort medium / read_vcd test.rtl.vcd.gz -vcd_module $design # Build detailed power models for …