This topic is being closed because the issue is considered as resolved by 4DSP. Feel free to create a new topic for any further inquiries.
about 4 years ago
Dear Sir, The 'tiedto0' keyword is the only keyword actually supported. Its purpose is not to tie to a specific voltage level but more like not having unconnected input in VHDL as this is not allowed by VHDL. We decided to always attach those to 0, we could have decided 1 but it is 0. Outputs can be left unconnected but not the inputs. We do not have extra documentation for the sdf syntax in more than the few examples found in the getting started guide as we are moving towards a StellarIP only supporting Schematic entry where the SDF is only an intermediate file. Best Regards, Arnaud