/* * This program source code file is part of KiCad, a free EDA CAD application. * * Copyright (C) 2022 Fabien Corona f.coronalaposte.net * Copyright (C) 2022-2023 KiCad Developers, see AUTHORS.txt for contributors. * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * 3. Neither the name of the copyright holder nor the names of its contributors may be used * to endorse or promote products derived from this software without specific * prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include "kibis.h" #include "ibis_parser.h" #include #include // _() is used here to mark translatable strings in IBIS_REPORTER::Report() // However, currently non ASCII7 chars are nor correctly handled when printing messages // So we disable translations #if 0 #include // for _() macro and wxGetTranslation() #else #undef _ #define _( x ) x #endif std::vector> SimplifyBitSequence( std::vector> bits ) { std::vector> result; int prevbit = -1; for( std::pair bit : bits ) { if( prevbit != bit.first ) result.push_back( bit ); prevbit = bit.first; } return result; } KIBIS_ANY::KIBIS_ANY( KIBIS* aTopLevel ) : IBIS_ANY( aTopLevel->m_reporter ) { m_topLevel = aTopLevel; m_valid = false; } IBIS_CORNER ReverseLogic( IBIS_CORNER aIn ) { IBIS_CORNER out = IBIS_CORNER::TYP; if( aIn == IBIS_CORNER::MIN ) { out = IBIS_CORNER::MAX; } else if( aIn == IBIS_CORNER::MAX ) { out = IBIS_CORNER::MIN; } return out; } KIBIS::KIBIS( std::string aFileName, REPORTER* aReporter ) : KIBIS_ANY( this ), m_reporter( aReporter ), m_file( this ) { IbisParser parser( m_reporter ); bool status = true; parser.m_parrot = false; status &= parser.ParseFile( aFileName ); status &= m_file.Init( parser ); for( IbisModel& iModel : parser.m_ibisFile.m_models ) { KIBIS_MODEL kModel( this, iModel, parser ); status &= kModel.m_valid; m_models.push_back( kModel ); } for( IbisComponent& iComponent : parser.m_ibisFile.m_components ) { KIBIS_COMPONENT kComponent( this, iComponent, parser ); status &= kComponent.m_valid; m_components.push_back( kComponent ); for( KIBIS_PIN& pin : m_components.back().m_pins ) { pin.m_parent = &( m_components.back() ); } for( IbisDiffPinEntry dpEntry : iComponent.m_diffPin.m_entries ) { KIBIS_PIN* pinA = m_components.back().GetPin( dpEntry.pinA ); KIBIS_PIN* pinB = m_components.back().GetPin( dpEntry.pinB ); if( pinA && pinB ) { pinA->m_complementaryPin = pinB; pinB->m_complementaryPin = pinA; } } } m_valid = status; } KIBIS_FILE::KIBIS_FILE( KIBIS* aTopLevel ) : KIBIS_ANY( aTopLevel ) { m_fileRev = -1; m_ibisVersion = -1; } bool KIBIS_FILE::Init( IbisParser& aParser ) { bool status = true; m_fileName = aParser.m_ibisFile.m_header.m_fileName; m_fileRev = aParser.m_ibisFile.m_header.m_fileRevision; m_ibisVersion = aParser.m_ibisFile.m_header.m_ibisVersion; m_date = aParser.m_ibisFile.m_header.m_date; m_notes = aParser.m_ibisFile.m_header.m_notes; m_disclaimer = aParser.m_ibisFile.m_header.m_disclaimer; m_copyright = aParser.m_ibisFile.m_header.m_copyright; m_valid = status; return status; } KIBIS_PIN::KIBIS_PIN( KIBIS* aTopLevel, IbisComponentPin& aPin, IbisComponentPackage& aPackage, IbisParser& aParser, KIBIS_COMPONENT* aParent, std::vector& aModels ) : KIBIS_ANY( aTopLevel ), m_Rpin( aTopLevel->m_reporter ), m_Lpin( aTopLevel->m_reporter ), m_Cpin( aTopLevel->m_reporter ) { m_signalName = aPin.m_signalName; m_pinNumber = aPin.m_pinName; m_parent = aParent; m_Rpin = aPackage.m_Rpkg; m_Lpin = aPackage.m_Lpkg; m_Cpin = aPackage.m_Cpkg; // The values listed in the [Pin] description section override the default // values defined in [Package] // @TODO : Reading the IBIS standard, I can't figure out if we are supposed // to replace typ, min, and max, or just the typ ? if( !std::isnan( aPin.m_Rpin ) ) { m_Rpin.value[IBIS_CORNER::TYP] = aPin.m_Rpin; m_Rpin.value[IBIS_CORNER::MIN] = aPin.m_Rpin; m_Rpin.value[IBIS_CORNER::MAX] = aPin.m_Rpin; } if( !std::isnan( aPin.m_Lpin ) ) { m_Lpin.value[IBIS_CORNER::TYP] = aPin.m_Lpin; m_Lpin.value[IBIS_CORNER::MIN] = aPin.m_Lpin; m_Lpin.value[IBIS_CORNER::MAX] = aPin.m_Lpin; } if( !std::isnan( aPin.m_Cpin ) ) { m_Cpin.value[IBIS_CORNER::TYP] = aPin.m_Cpin; m_Cpin.value[IBIS_CORNER::MIN] = aPin.m_Cpin; m_Cpin.value[IBIS_CORNER::MAX] = aPin.m_Cpin; } bool modelSelected = false; std::vector listOfModels; for( IbisModelSelector modelSelector : aParser.m_ibisFile.m_modelSelectors ) { if( !strcmp( modelSelector.m_name.c_str(), aPin.m_modelName.c_str() ) ) { for( IbisModelSelectorEntry model : modelSelector.m_models ) { listOfModels.push_back( model.m_modelName ); } modelSelected = true; break; } } if( !modelSelected ) { listOfModels.push_back( aPin.m_modelName ); } for( std::string modelName : listOfModels ) { for( KIBIS_MODEL& model : aModels ) { if( !strcmp( model.m_name.c_str(), modelName.c_str() ) ) { m_models.push_back( &model ); } } } m_valid = true; } KIBIS_MODEL::KIBIS_MODEL( KIBIS* aTopLevel, IbisModel& aSource, IbisParser& aParser ) : KIBIS_ANY( aTopLevel ), m_C_comp( aTopLevel->m_reporter ), m_voltageRange( aTopLevel->m_reporter ), m_temperatureRange( aTopLevel->m_reporter ), m_pullupReference( aTopLevel->m_reporter ), m_pulldownReference( aTopLevel->m_reporter ), m_GNDClampReference( aTopLevel->m_reporter ), m_POWERClampReference( aTopLevel->m_reporter ), m_Rgnd( aTopLevel->m_reporter ), m_Rpower( aTopLevel->m_reporter ), m_Rac( aTopLevel->m_reporter ), m_Cac( aTopLevel->m_reporter ), m_GNDClamp( aTopLevel->m_reporter ), m_POWERClamp( aTopLevel->m_reporter ), m_pullup( aTopLevel->m_reporter ), m_pulldown( aTopLevel->m_reporter ), m_ramp( aTopLevel->m_reporter ) { bool status = true; m_name = aSource.m_name; m_type = aSource.m_type; m_description = std::string( "No description available." ); for( IbisModelSelector modelSelector : aParser.m_ibisFile.m_modelSelectors ) { for( IbisModelSelectorEntry entry : modelSelector.m_models ) { if( !strcmp( entry.m_modelName.c_str(), m_name.c_str() ) ) { m_description = entry.m_modelDescription; } } } m_vinh = aSource.m_vinh; m_vinl = aSource.m_vinl; m_vref = aSource.m_vref; m_rref = aSource.m_rref; m_cref = aSource.m_cref; m_vmeas = aSource.m_vmeas; m_enable = aSource.m_enable; m_polarity = aSource.m_polarity; m_ramp = aSource.m_ramp; m_risingWaveforms = aSource.m_risingWaveforms; m_fallingWaveforms = aSource.m_fallingWaveforms; m_GNDClamp = aSource.m_GNDClamp; m_GNDClampReference = aSource.m_GNDClampReference; m_POWERClamp = aSource.m_POWERClamp; m_POWERClampReference = aSource.m_POWERClampReference; m_C_comp = aSource.m_C_comp; m_voltageRange = aSource.m_voltageRange; m_temperatureRange = aSource.m_temperatureRange; m_pullupReference = aSource.m_pullupReference; m_pulldownReference = aSource.m_pulldownReference; m_Rgnd = aSource.m_Rgnd; m_Rpower = aSource.m_Rpower; m_Rac = aSource.m_Rac; m_Cac = aSource.m_Cac; m_pullup = aSource.m_pullup; m_pulldown = aSource.m_pulldown; m_valid = status; } KIBIS_COMPONENT::KIBIS_COMPONENT( KIBIS* aTopLevel, IbisComponent& aSource, IbisParser& aParser ) : KIBIS_ANY( aTopLevel ) { bool status = true; m_name = aSource.m_name; m_manufacturer = aSource.m_manufacturer; m_topLevel = aTopLevel; for( IbisComponentPin& iPin : aSource.m_pins ) { if( iPin.m_dummy ) { continue; } KIBIS_PIN kPin( aTopLevel, iPin, aSource.m_package, aParser, nullptr, m_topLevel->m_models ); status &= kPin.m_valid; m_pins.push_back( kPin ); } m_valid = status; } KIBIS_PIN* KIBIS_COMPONENT::GetPin( std::string aPinNumber ) { for( KIBIS_PIN& pin : m_pins ) { if( pin.m_pinNumber == aPinNumber ) { return &pin; } } return nullptr; } std::vector> KIBIS_MODEL::waveformPairs() { std::vector> pairs; IbisWaveform* wf1; IbisWaveform* wf2; for( size_t i = 0; i < m_risingWaveforms.size(); i++ ) { for( size_t j = 0; j < m_fallingWaveforms.size(); j++ ) { wf1 = m_risingWaveforms.at( i ); wf2 = m_fallingWaveforms.at( j ); if( wf1->m_R_fixture == wf2->m_R_fixture && wf1->m_L_fixture == wf2->m_L_fixture && wf1->m_C_fixture == wf2->m_C_fixture && wf1->m_V_fixture == wf2->m_V_fixture && wf1->m_V_fixture_min == wf2->m_V_fixture_min && wf1->m_V_fixture_max == wf2->m_V_fixture_max ) { std::pair p; p.first = wf1; p.second = wf2; pairs.push_back( p ); } } } return pairs; } std::string KIBIS_MODEL::SpiceDie( KIBIS_PARAMETER& aParam, int aIndex ) { std::string result; std::string GC_GND = "GC_GND"; std::string PC_PWR = "PC_PWR"; std::string PU_PWR = "PU_PWR"; std::string PD_GND = "PD_GND"; std::string DIE = "DIE"; std::string DIEBUFF = "DIEBUFF"; IBIS_CORNER supply = aParam.m_supply; IBIS_CORNER ccomp = aParam.m_Ccomp; GC_GND += std::to_string( aIndex ); PC_PWR += std::to_string( aIndex ); PU_PWR += std::to_string( aIndex ); PD_GND += std::to_string( aIndex ); DIE += std::to_string( aIndex ); DIEBUFF += std::to_string( aIndex ); std::string GC = "GC"; std::string PC = "PC"; std::string PU = "PU"; std::string PD = "PD"; GC += std::to_string( aIndex ); PC += std::to_string( aIndex ); PU += std::to_string( aIndex ); PD += std::to_string( aIndex ); result = "\n"; result += "VPWR POWER GND "; result += doubleToString( m_voltageRange.value[supply] ); result += "\n"; result += "CCPOMP " + DIE + " GND "; result += doubleToString( m_C_comp.value[ccomp] ); result += "\n"; if( HasGNDClamp() ) { result += m_GNDClamp.Spice( aIndex * 4 + 1, DIE, GC_GND, GC, supply ); result += "VmeasGC GND " + GC_GND + " 0\n"; } if( HasPOWERClamp() ) { result += m_POWERClamp.Spice( aIndex * 4 + 2, "POWER", DIE, PC, supply ); result += "VmeasPC POWER " + PC_PWR + " 0\n"; } if( HasPulldown() ) { result += m_pulldown.Spice( aIndex * 4 + 3, DIEBUFF, PD_GND, PD, supply ); result += "VmeasPD GND " + PD_GND + " 0\n"; result += "BKD GND " + DIE + " i=( i(VmeasPD) * v(KD) )\n"; } if( HasPullup() ) { result += m_pullup.Spice( aIndex * 4 + 4, PU_PWR, DIEBUFF, PU, supply ); result += "VmeasPU POWER " + PU_PWR + " 0\n"; result += "BKU POWER " + DIE + " i=( -i(VmeasPU) * v(KU) )\n"; } if ( HasPullup() || HasPulldown() ) result += "BDIEBUFF " + DIEBUFF + " GND v=v(" + DIE + ")\n"; return result; } IbisWaveform KIBIS_MODEL::TrimWaveform( IbisWaveform& aIn ) { IbisWaveform out( aIn.m_reporter ); int nbPoints = aIn.m_table.m_entries.size(); if( nbPoints < 2 ) { Report( _( "waveform has less than two points" ), RPT_SEVERITY_ERROR ); return out; } double DCtyp = aIn.m_table.m_entries[0].V.value[IBIS_CORNER::TYP]; double DCmin = aIn.m_table.m_entries[0].V.value[IBIS_CORNER::MIN]; double DCmax = aIn.m_table.m_entries[0].V.value[IBIS_CORNER::MAX]; if( nbPoints == 2 ) { return out; } out.m_table.m_entries.clear(); for( int i = 0; i < nbPoints; i++ ) { VTtableEntry entry( out.m_reporter ); entry.t = aIn.m_table.m_entries.at( i ).t; entry.V.value[IBIS_CORNER::TYP] = aIn.m_table.m_entries.at( i ).V.value[IBIS_CORNER::TYP]; entry.V.value[IBIS_CORNER::MIN] = aIn.m_table.m_entries.at( i ).V.value[IBIS_CORNER::MIN]; entry.V.value[IBIS_CORNER::MAX] = aIn.m_table.m_entries.at( i ).V.value[IBIS_CORNER::MAX]; out.m_table.m_entries.push_back( entry ); out.m_table.m_entries.at( i ).V.value[IBIS_CORNER::TYP] -= DCtyp; out.m_table.m_entries.at( i ).V.value[IBIS_CORNER::MIN] -= DCmin; out.m_table.m_entries.at( i ).V.value[IBIS_CORNER::MAX] -= DCmax; } return out; } bool KIBIS_MODEL::HasPulldown() { return m_pulldown.m_entries.size() > 0; } bool KIBIS_MODEL::HasPullup() { return m_pullup.m_entries.size() > 0; } bool KIBIS_MODEL::HasGNDClamp() { return m_GNDClamp.m_entries.size() > 0; } bool KIBIS_MODEL::HasPOWERClamp() { return m_POWERClamp.m_entries.size() > 0; } std::string KIBIS_MODEL::generateSquareWave( std::string aNode1, std::string aNode2, std::vector> aBits, std::pair aPair, KIBIS_PARAMETER& aParam ) { IBIS_CORNER supply = aParam.m_supply; std::string simul; std::vectorstimuliIndex; IbisWaveform risingWF = TrimWaveform( *( aPair.first ) ); IbisWaveform fallingWF = TrimWaveform( *( aPair.second ) ); double deltaR = risingWF.m_table.m_entries.back().V.value[supply] - risingWF.m_table.m_entries.at( 0 ).V.value[supply]; double deltaF = fallingWF.m_table.m_entries.back().V.value[supply] - fallingWF.m_table.m_entries.at( 0 ).V.value[supply]; // Ideally, delta should be equal to zero. // It can be different from zero if the falling waveform does not start were the rising one ended. double delta = deltaR + deltaF; int i = 0; int prevBit = 2; for( std::pair bit : aBits ) { IbisWaveform* WF; double timing = bit.second; if ( bit.first != prevBit ) { if( bit.first == 1 ) WF = &risingWF; else WF = &fallingWF; stimuliIndex.push_back( i ); simul += "Vstimuli"; simul += std::to_string( i ); simul += " stimuli"; simul += std::to_string( i ); simul += " "; simul += aNode2; simul += " pwl ( \n+"; if( i != 0 ) { simul += "0 0 "; VTtableEntry entry0 = WF->m_table.m_entries.at( 0 ); VTtableEntry entry1 = WF->m_table.m_entries.at( 1 ); double deltaT = entry1.t - entry0.t; simul += doubleToString( entry0.t + timing - deltaT ); simul += " "; simul += "0"; simul += "\n+"; } for( VTtableEntry& entry : WF->m_table.m_entries ) { simul += doubleToString( entry.t + timing ); simul += " "; simul += doubleToString( entry.V.value[supply] - delta ); simul += "\n+"; } simul += ")\n"; } i++; prevBit = bit.first; } simul += "bin "; simul += aNode1; simul += " "; simul += aNode2; simul += " v=("; for( int ii: stimuliIndex ) { simul += " v( stimuli"; simul += std::to_string( ii ); simul += " ) +\n+"; } // Depending on the first bit, we add a different DC value // The DC value we add is the first value of the first bit. if( ( aBits.size() > 0 ) && ( aBits[0].first == 0 ) ) { simul += doubleToString( aPair.second->m_table.m_entries.at( 0 ).V.value[supply] ); } else { simul += doubleToString( aPair.first->m_table.m_entries.at( 0 ).V.value[supply] ); } simul += ")\n"; return simul; } std::string KIBIS_PIN::addDie( KIBIS_MODEL& aModel, KIBIS_PARAMETER& aParam, int aIndex ) { IBIS_CORNER supply = aParam.m_supply; std::string simul; std::string GC_GND = "GC_GND"; std::string PC_PWR = "PC_PWR"; std::string PU_PWR = "PU_PWR"; std::string PD_GND = "PD_GND"; std::string DIE = "DIE"; GC_GND += std::to_string( aIndex ); PC_PWR += std::to_string( aIndex ); PU_PWR += std::to_string( aIndex ); PD_GND += std::to_string( aIndex ); DIE += std::to_string( aIndex ); std::string GC = "GC"; std::string PC = "PC"; std::string PU = "PU"; std::string PD = "PD"; GC += std::to_string( aIndex ); PC += std::to_string( aIndex ); PU += std::to_string( aIndex ); PD += std::to_string( aIndex ); if( aModel.HasGNDClamp() ) { simul += aModel.m_GNDClamp.Spice( aIndex * 4 + 1, DIE, GC_GND, GC, supply ); } if( aModel.HasPOWERClamp() ) { simul += aModel.m_POWERClamp.Spice( aIndex * 4 + 2, PC_PWR, DIE, PC, supply ); } if( aModel.HasPulldown() ) { simul += aModel.m_pulldown.Spice( aIndex * 4 + 3, DIE, PD_GND, PD, supply ); } if( aModel.HasPullup() ) { simul += aModel.m_pullup.Spice( aIndex * 4 + 4, PU_PWR, DIE, PU, supply ); } return simul; } void KIBIS_PIN::getKuKdFromFile( std::string* aSimul ) { std::string outputFileName = m_topLevel->m_cacheDir + "temp_output.spice"; if( std::remove( outputFileName.c_str() ) ) { Report( _( "Cannot remove temporary output file" ), RPT_SEVERITY_WARNING ); } std::shared_ptr ng = SIMULATOR::CreateInstance( "ng-kibis" ); if( !ng ) { throw std::runtime_error( "Could not create simulator instance" ); return; } ng->Init(); ng->LoadNetlist( *aSimul ); std::ifstream KuKdfile; KuKdfile.open( outputFileName ); std::vector ku, kd, t; if( KuKdfile ) { std::string line; for( int i = 0; i < 11; i++ ) // number of line in the ngspice output header { std::getline( KuKdfile, line ); } int i = 0; double t_v, ku_v, kd_v; while( KuKdfile ) { std::getline( KuKdfile, line ); if( line.empty() ) { continue; } switch( i ) { case 0: line = line.substr( line.find_first_of( "\t" ) + 1 ); t_v = std::stod( line ); break; case 1: ku_v = std::stod( line ); break; case 2: kd_v = std::stod( line ); ku.push_back( ku_v ); kd.push_back( kd_v ); t.push_back( t_v ); break; default: Report( _( "Error while reading temporary file" ), RPT_SEVERITY_ERROR ); } i = ( i + 1 ) % 3; } std::getline( KuKdfile, line ); } else { Report( _( "Error while creating temporary output file" ), RPT_SEVERITY_ERROR ); } if( std::remove( outputFileName.c_str() ) ) { Report( _( "Cannot remove temporary output file" ), RPT_SEVERITY_WARNING ); } m_Ku = ku; m_Kd = kd; m_t = t; } std::string KIBIS_PIN::KuKdDriver( KIBIS_MODEL& aModel, std::pair aPair, KIBIS_PARAMETER& aParam, int aIndex ) { IBIS_CORNER supply = aParam.m_supply; IBIS_CORNER ccomp = aParam.m_Ccomp; KIBIS_WAVEFORM* wave = aParam.m_waveform; std::string simul = ""; simul += "*THIS IS NOT A VALID SPICE MODEL.\n"; simul += "*This part is intended to be executed by Kibis internally.\n"; simul += "*You should not be able to read this.\n\n"; simul += ".SUBCKT DRIVER"; simul += std::to_string( aIndex ); simul += " POWER GND PIN \n"; // 1: POWER, 2:GND, 3:PIN simul += "Vdummy 2 PIN 0\n"; if( ( aPair.first->m_R_dut != 0 ) || ( aPair.first->m_L_dut != 0 ) || ( aPair.first->m_C_dut != 0 ) ) { Report( _( "Kibis does not support DUT values yet. " "https://ibis.org/summits/nov16a/chen.pdf" ), RPT_SEVERITY_WARNING ); } simul += "\n"; simul += "CCPOMP 2 GND "; simul += doubleToString( aModel.m_C_comp.value[ccomp] ); //@TODO: Check the corner ? simul += "\n"; IbisWaveform* risingWF = aPair.first; IbisWaveform* fallingWF = aPair.second; switch( wave->GetType() ) { case KIBIS_WAVEFORM_TYPE::RECTANGULAR: case KIBIS_WAVEFORM_TYPE::PRBS: { wave->Check( risingWF, fallingWF ); std::vector> bits = wave->GenerateBitSequence(); bits = SimplifyBitSequence( bits ); simul += aModel.generateSquareWave( "DIE0", "GND", bits, aPair, aParam ); break; } case KIBIS_WAVEFORM_TYPE::STUCK_HIGH: { IbisWaveform* waveform = wave->inverted ? risingWF : fallingWF; simul += "Vsig DIE0 GND "; simul += doubleToString( waveform->m_table.m_entries.at( 0 ).V.value[supply] ); simul += "\n"; break; } case KIBIS_WAVEFORM_TYPE::STUCK_LOW: { IbisWaveform* waveform = wave->inverted ? fallingWF : risingWF; simul += "Vsig DIE0 GND "; simul += doubleToString( waveform->m_table.m_entries.at( 0 ).V.value[supply] ); simul += "\n"; break; } case KIBIS_WAVEFORM_TYPE::NONE: case KIBIS_WAVEFORM_TYPE::HIGH_Z: default: break; } simul += addDie( aModel, aParam, 0 ); simul += "\n.ENDS DRIVER\n\n"; return simul; } void KIBIS_PIN::getKuKdOneWaveform( KIBIS_MODEL& aModel, std::pair aPair, KIBIS_PARAMETER& aParam ) { IBIS_CORNER supply = aParam.m_supply; KIBIS_WAVEFORM* wave = aParam.m_waveform; std::string simul = ""; if( !wave ) return; if( wave->GetType() == KIBIS_WAVEFORM_TYPE::NONE ) { //@TODO , there could be some current flowing through pullup / pulldown transistors, even when off std::vector ku, kd, t; ku.push_back( 0 ); kd.push_back( 0 ); t.push_back( 0 ); m_Ku = ku; m_Kd = kd; m_t = t; } else { simul += KuKdDriver( aModel, aPair, aParam, 0 ); simul += "\n x1 3 0 1 DRIVER0 \n"; simul += "VCC 3 0 "; simul += doubleToString( aModel.m_voltageRange.value[supply] ); simul += "\n"; //simul += "Vpin x1.DIE 0 1 \n" simul += "Lfixture 1 4 "; simul += doubleToString( aPair.first->m_L_fixture ); simul += "\n"; simul += "Rfixture 4 5 "; simul += doubleToString( aPair.first->m_R_fixture ); simul += "\n"; simul += "Cfixture 4 0 "; simul += doubleToString( aPair.first->m_C_fixture ); simul += "\n"; simul += "Vfixture 5 0 "; simul += doubleToString( aPair.first->m_V_fixture ); simul += "\n"; simul += "VmeasIout x1.DIE0 x1.2 0\n"; simul += "VmeasPD 0 x1.PD_GND0 0\n"; simul += "VmeasPU x1.PU_PWR0 3 0\n"; simul += "VmeasPC x1.PC_PWR0 3 0\n"; simul += "VmeasGC 0 x1.GC_PWR0 0\n"; if( aModel.HasPullup() && aModel.HasPulldown() ) { Report( _( "Model has only one waveform pair, reduced accuracy" ), RPT_SEVERITY_WARNING ); simul += "Bku KU 0 v=( (i(VmeasIout)-i(VmeasPC)-i(VmeasGC)-i(VmeasPD) " ")/(i(VmeasPU)-i(VmeasPD)))\n"; simul += "Bkd KD 0 v=(1-v(KU))\n"; } else if( !aModel.HasPullup() && aModel.HasPulldown() ) { simul += "Bku KD 0 v=( ( i(VmeasIout)+i(VmeasPC)+i(VmeasGC) )/(i(VmeasPD)))\n"; simul += "Bkd KU 0 v=0\n"; } else if( aModel.HasPullup() && !aModel.HasPulldown() ) { simul += "Bku KU 0 v=( ( i(VmeasIout)+i(VmeasPC)+i(VmeasGC) )/(i(VmeasPU)))\n"; simul += "Bkd KD 0 v=0\n"; } else { Report( _( "Driver needs at least a pullup or a pulldown" ), RPT_SEVERITY_ERROR ); } switch( wave->GetType() ) { case KIBIS_WAVEFORM_TYPE::PRBS: case KIBIS_WAVEFORM_TYPE::RECTANGULAR: { double duration = wave->GetDuration(); simul += ".tran 0.1n "; simul += doubleToString( duration ); simul += "\n"; break; } case KIBIS_WAVEFORM_TYPE::HIGH_Z: case KIBIS_WAVEFORM_TYPE::STUCK_LOW: case KIBIS_WAVEFORM_TYPE::STUCK_HIGH: default: simul += ".tran 0.5 1 \n"; // } //simul += ".dc Vpin -5 5 0.1\n"; simul += ".control run \n"; simul += "set filetype=ascii\n"; simul += "run \n"; //simul += "plot v(x1.DIE0) i(VmeasIout) i(VmeasPD) i(VmeasPU) i(VmeasPC) i(VmeasGC)\n"; //simul += "plot v(KU) v(KD)\n"; std::string outputFileName = m_topLevel->m_cacheDir + "temp_output.spice"; simul += "write '" + outputFileName + "' v(KU) v(KD)\n"; simul += "quit\n"; simul += ".endc \n"; simul += ".end \n"; getKuKdFromFile( &simul ); } } void KIBIS_PIN::getKuKdNoWaveform( KIBIS_MODEL& aModel, KIBIS_PARAMETER& aParam ) { std::vector ku, kd, t; KIBIS_WAVEFORM* wave = aParam.m_waveform; IBIS_CORNER& supply = aParam.m_supply; if( !wave ) { return; } switch( wave->GetType() ) { case KIBIS_WAVEFORM_TYPE::RECTANGULAR: case KIBIS_WAVEFORM_TYPE::PRBS: { wave->Check( aModel.m_ramp.m_rising, aModel.m_ramp.m_falling ); std::vector> bits = wave->GenerateBitSequence(); bits = SimplifyBitSequence( bits ); for( std::pair bit : bits ) { ku.push_back( bit.first ? 0 : 1 ); kd.push_back( bit.first ? 1 : 0 ); t.push_back( bit.second ); ku.push_back( bit.first ? 1 : 0 ); kd.push_back( bit.first ? 0 : 1 ); t.push_back( bit.second + ( bit.first ? +aModel.m_ramp.m_rising.value[supply].m_dt : aModel.m_ramp.m_falling.value[supply].m_dt ) / 0.6 ); // 0.6 because ibis only gives 20%-80% time } break; } case KIBIS_WAVEFORM_TYPE::STUCK_HIGH: { ku.push_back( wave->inverted ? 0 : 1 ); kd.push_back( wave->inverted ? 1 : 0 ); t.push_back( 0 ); break; } case KIBIS_WAVEFORM_TYPE::STUCK_LOW: { ku.push_back( wave->inverted ? 1 : 0 ); kd.push_back( wave->inverted ? 0 : 1 ); t.push_back( 0 ); break; } case KIBIS_WAVEFORM_TYPE::HIGH_Z: case KIBIS_WAVEFORM_TYPE::NONE: default: ku.push_back( 0 ); kd.push_back( 0 ); t.push_back( 0 ); } m_Ku = ku; m_Kd = kd; m_t = t; } void KIBIS_PIN::getKuKdTwoWaveforms( KIBIS_MODEL& aModel, std::pair aPair1, std::pair aPair2, KIBIS_PARAMETER& aParam ) { std::string simul = ""; IBIS_CORNER supply = aParam.m_supply; KIBIS_WAVEFORM* wave = aParam.m_waveform; if( !wave ) return; if( wave->GetType() == KIBIS_WAVEFORM_TYPE::NONE ) { //@TODO , there could be some current flowing through pullup / pulldown transistors, even when off std::vector ku, kd, t; ku.push_back( 0 ); kd.push_back( 0 ); t.push_back( 0 ); m_Ku = ku; m_Kd = kd; m_t = t; } else { simul += KuKdDriver( aModel, aPair1, aParam, 0 ); simul += KuKdDriver( aModel, aPair2, aParam, 1 ); simul += "\n x1 3 0 1 DRIVER0 \n"; simul += "VCC 3 0 "; simul += doubleToString( aModel.m_voltageRange.value[supply] ); simul += "\n"; //simul += "Vpin x1.DIE 0 1 \n" simul += "Lfixture0 1 4 "; simul += doubleToString( aPair1.first->m_L_fixture ); simul += "\n"; simul += "Rfixture0 4 5 "; simul += doubleToString( aPair1.first->m_R_fixture ); simul += "\n"; simul += "Cfixture0 4 0 "; simul += doubleToString( aPair1.first->m_C_fixture ); simul += "\n"; simul += "Vfixture0 5 0 "; simul += doubleToString( aPair1.first->m_V_fixture ); simul += "\n"; simul += "VmeasIout0 x1.2 x1.DIE0 0\n"; simul += "VmeasPD0 0 x1.PD_GND0 0\n"; simul += "VmeasPU0 x1.PU_PWR0 3 0\n"; simul += "VmeasPC0 x1.PC_PWR0 3 0\n"; simul += "VmeasGC0 0 x1.GC_PWR0 0\n"; simul += "\n x2 3 0 7 DRIVER1 \n"; //simul += "Vpin x1.DIE 0 1 \n" simul += "Lfixture1 7 8 "; simul += doubleToString( aPair2.first->m_L_fixture ); simul += "\n"; simul += "Rfixture1 8 9 "; simul += doubleToString( aPair2.first->m_R_fixture ); simul += "\n"; simul += "Cfixture1 8 0 "; simul += doubleToString( aPair2.first->m_C_fixture ); simul += "\n"; simul += "Vfixture1 9 0 "; simul += doubleToString( aPair2.first->m_V_fixture ); simul += "\n"; simul += "VmeasIout1 x2.2 x2.DIE0 0\n"; simul += "VmeasPD1 0 x2.PD_GND0 0\n"; simul += "VmeasPU1 x2.PU_PWR0 3 0\n"; simul += "VmeasPC1 x2.PC_PWR0 3 0\n"; simul += "VmeasGC1 0 x2.GC_PWR0 0\n"; if( aModel.HasPullup() && aModel.HasPulldown() ) { simul += "Bku KU 0 v=( ( i(VmeasPD1) * ( i(VmeasIout0) + i(VmeasPC0) + i(VmeasGC0) ) - " "i(VmeasPD0) * ( i(VmeasIout1) + i(VmeasPC1) + i(VmeasGC1) ) )/ ( i(VmeasPU1) " "* " "i(VmeasPD0) - i(VmeasPU0) * i(VmeasPD1) ) )\n"; simul += "Bkd KD 0 v=( ( i(VmeasPU1) * ( i(VmeasIout0) + i(VmeasPC0) + i(VmeasGC0) ) - " "i(VmeasPU0) * ( i(VmeasIout1) + i(VmeasPC1) + i(VmeasGC1) ) )/ ( i(VmeasPD1) " "* " "i(VmeasPU0) - i(VmeasPD0) * i(VmeasPU1) ) )\n"; //simul += "Bkd KD 0 v=(1-v(KU))\n"; } else if( !aModel.HasPullup() && aModel.HasPulldown() ) { Report( _( "There are two waveform pairs, but only one transistor. More equations than " "unknowns." ), RPT_SEVERITY_WARNING ); simul += "Bku KD 0 v=( ( i(VmeasIout0)+i(VmeasPC0)+i(VmeasGC0) )/(i(VmeasPD0)))\n"; simul += "Bkd KU 0 v=0\n"; } else if( aModel.HasPullup() && !aModel.HasPulldown() ) { Report( _( "There are two waveform pairs, but only one transistor. More equations than " "unknowns." ), RPT_SEVERITY_WARNING ); simul += "Bku KU 0 v=( ( i(VmeasIout)+i(VmeasPC)+i(VmeasGC) )/(i(VmeasPU)))\n"; simul += "Bkd KD 0 v=0\n"; } else { Report( _( "Driver needs at least a pullup or a pulldown" ), RPT_SEVERITY_ERROR ); } switch( wave->GetType() ) { case KIBIS_WAVEFORM_TYPE::RECTANGULAR: case KIBIS_WAVEFORM_TYPE::PRBS: { double duration = wave->GetDuration(); simul += ".tran 0.1n "; simul += doubleToString( duration ); simul += "\n"; break; } case KIBIS_WAVEFORM_TYPE::HIGH_Z: case KIBIS_WAVEFORM_TYPE::STUCK_LOW: case KIBIS_WAVEFORM_TYPE::STUCK_HIGH: default: simul += ".tran 0.5 1 \n"; // } //simul += ".dc Vpin -5 5 0.1\n"; simul += ".control run \n"; simul += "set filetype=ascii\n"; simul += "run \n"; simul += "plot v(KU) v(KD)\n"; //simul += "plot v(x1.DIE0) \n"; std::string outputFileName = m_topLevel->m_cacheDir + "temp_output.spice"; simul += "write '" + outputFileName + "' v(KU) v(KD)\n"; simul += "quit\n"; simul += ".endc \n"; simul += ".end \n"; getKuKdFromFile( &simul ); } } bool KIBIS_PIN::writeSpiceDriver( std::string* aDest, std::string aName, KIBIS_MODEL& aModel, KIBIS_PARAMETER& aParam ) { bool status = true; switch( aModel.m_type ) { case IBIS_MODEL_TYPE::OUTPUT: case IBIS_MODEL_TYPE::IO: case IBIS_MODEL_TYPE::THREE_STATE: case IBIS_MODEL_TYPE::OPEN_DRAIN: case IBIS_MODEL_TYPE::IO_OPEN_DRAIN: case IBIS_MODEL_TYPE::OPEN_SINK: case IBIS_MODEL_TYPE::IO_OPEN_SINK: case IBIS_MODEL_TYPE::OPEN_SOURCE: case IBIS_MODEL_TYPE::IO_OPEN_SOURCE: case IBIS_MODEL_TYPE::OUTPUT_ECL: case IBIS_MODEL_TYPE::IO_ECL: case IBIS_MODEL_TYPE::THREE_STATE_ECL: { std::string result; std::string tmp; result = "\n*Driver model generated by Kicad using Ibis data. "; result += "\n*Component: "; if( m_parent ) { //result += m_parent->m_name; } result += "\n*Manufacturer: "; if( m_parent ) { //result += m_parent->m_manufacturer; } result += "\n*Pin number: "; result += m_pinNumber; result += "\n*Signal name: "; result += m_signalName; result += "\n*Model: "; result += aModel.m_name; result += "\n.SUBCKT "; result += aName; result += " GND PIN \n"; result += "\n"; result += "RPIN 1 PIN "; result += doubleToString( m_Rpin.value[aParam.m_Rpin] ); result += "\n"; result += "LPIN DIE0 1 "; result += doubleToString( m_Lpin.value[aParam.m_Lpin] ); result += "\n"; result += "CPIN PIN GND "; result += doubleToString( m_Cpin.value[aParam.m_Cpin] ); result += "\n"; std::vector> wfPairs = aModel.waveformPairs(); KIBIS_ACCURACY accuracy = aParam.m_accuracy; if( wfPairs.size() < 1 || accuracy <= KIBIS_ACCURACY::LEVEL_0 ) { if( accuracy > KIBIS_ACCURACY::LEVEL_0 ) { Report( _( "Model has no waveform pair, using [Ramp] instead, poor accuracy" ), RPT_SEVERITY_INFO ); } getKuKdNoWaveform( aModel, aParam ); } else if( wfPairs.size() == 1 || accuracy <= KIBIS_ACCURACY::LEVEL_1 ) { getKuKdOneWaveform( aModel, wfPairs.at( 0 ), aParam ); } else { if( wfPairs.size() > 2 || accuracy <= KIBIS_ACCURACY::LEVEL_2 ) { Report( _( "Model has more than 2 waveform pairs, using the first two." ), RPT_SEVERITY_WARNING ); } getKuKdTwoWaveforms( aModel, wfPairs.at( 0 ), wfPairs.at( 1 ), aParam ); } result += "Vku KU GND pwl ( "; for( size_t i = 0; i < m_t.size(); i++ ) { result += doubleToString( m_t.at( i ) ); result += " "; result += doubleToString( m_Ku.at( i ) ); result += " "; } result += ") \n"; result += "Vkd KD GND pwl ( "; for( size_t i = 0; i < m_t.size(); i++ ) { result += doubleToString( m_t.at( i ) ); result += " "; result += doubleToString( m_Kd.at( i ) ); result += " "; } result += ") \n"; result += aModel.SpiceDie( aParam, 0 ); result += "\n.ENDS DRIVER\n\n"; *aDest += result; break; } default: Report( _( "Invalid model type for a driver." ), RPT_SEVERITY_ERROR ); status = false; } return status; } bool KIBIS_PIN::writeSpiceDevice( std::string* aDest, std::string aName, KIBIS_MODEL& aModel, KIBIS_PARAMETER& aParam ) { bool status = true; switch( aModel.m_type ) { case IBIS_MODEL_TYPE::INPUT_STD: case IBIS_MODEL_TYPE::IO: case IBIS_MODEL_TYPE::IO_OPEN_DRAIN: case IBIS_MODEL_TYPE::IO_OPEN_SINK: case IBIS_MODEL_TYPE::IO_OPEN_SOURCE: case IBIS_MODEL_TYPE::IO_ECL: { std::string result; std::string tmp; result += "\n"; result = "*Device model generated by Kicad using Ibis data."; result += "\n.SUBCKT "; result += aName; result += " GND PIN\n"; result += "\n"; result += "\n"; result += "RPIN 1 PIN "; result += doubleToString( m_Rpin.value[aParam.m_Rpin] ); result += "\n"; result += "LPIN DIE0 1 "; result += doubleToString( m_Lpin.value[aParam.m_Lpin] ); result += "\n"; result += "CPIN PIN GND "; result += doubleToString( m_Cpin.value[aParam.m_Cpin] ); result += "\n"; result += "Vku KU GND pwl ( 0 0 )\n"; result += "Vkd KD GND pwl ( 0 0 )\n"; result += aModel.SpiceDie( aParam, 0 ); result += "\n.ENDS DRIVER\n\n"; *aDest = result; break; } default: Report( _( "Invalid model type for a device" ), RPT_SEVERITY_ERROR ); status = false; } return status; } bool KIBIS_PIN::writeSpiceDiffDriver( std::string* aDest, std::string aName, KIBIS_MODEL& aModel, KIBIS_PARAMETER& aParam ) { bool status = true; KIBIS_WAVEFORM* wave = aParam.m_waveform; if( !wave ) return false; std::string result; result = "\n*Differential driver model generated by Kicad using Ibis data. "; result += "\n*Component: "; if( m_parent ) { //result += m_parent->m_name; } result += "\n*Manufacturer: "; if( m_parent ) { //result += m_parent->m_manufacturer; } result += "\n.SUBCKT "; result += aName; result += " GND PIN_P PIN_N\n"; result += "\n"; status &= writeSpiceDriver( &result, aName + "_P", aModel, aParam ); wave->inverted = !wave->inverted; status &= writeSpiceDriver( &result, aName + "_N", aModel, aParam ); wave->inverted = !wave->inverted; result += "\n"; result += "x1 GND PIN_P " + aName + "_P \n"; result += "x2 GND PIN_N " + aName + "_N \n"; result += "\n"; result += "\n.ENDS " + aName + "\n\n"; if( status ) { *aDest += result; } return status; } bool KIBIS_PIN::writeSpiceDiffDevice( std::string* aDest, std::string aName, KIBIS_MODEL& aModel, KIBIS_PARAMETER& aParam ) { bool status = true; std::string result; result = "\n*Differential device model generated by Kicad using Ibis data. "; result += "\n*Component: "; if( m_parent ) { //result += m_parent->m_name; } result += "\n*Manufacturer: "; if( m_parent ) { //result += m_parent->m_manufacturer; } result += "\n.SUBCKT "; result += aName; result += " GND PIN_P PIN_N\n"; result += "\n"; status &= writeSpiceDevice( &result, aName + "_P", aModel, aParam ); status &= writeSpiceDevice( &result, aName + "_N", aModel, aParam ); result += "\n"; result += "x1 GND PIN_P " + aName + "_P \n"; result += "x2 GND PIN_N " + aName + "_N \n"; result += "\n"; result += "\n.ENDS " + aName + "\n\n"; if( status ) { *aDest += result; } return status; } KIBIS_MODEL* KIBIS::GetModel( std::string aName ) { for( KIBIS_MODEL& model : m_models ) { if( model.m_name == aName ) return &model; } return nullptr; } KIBIS_COMPONENT* KIBIS::GetComponent( std::string aName ) { for( KIBIS_COMPONENT& cmp : m_components ) { if( cmp.m_name == aName ) return &cmp; } return nullptr; } void KIBIS_PARAMETER::SetCornerFromString( IBIS_CORNER& aCorner, std::string aString ) { if( aString == "MIN" ) aCorner = IBIS_CORNER::MIN; else if( aString == "MAX" ) aCorner = IBIS_CORNER::MAX; else aCorner = IBIS_CORNER::TYP; } std::vector> KIBIS_WAVEFORM_STUCK_HIGH::GenerateBitSequence() { std::vector> bits; std::pair bit; bit.first = inverted ? 1 : 0; bit.second = 0; return bits; } std::vector> KIBIS_WAVEFORM_STUCK_LOW::GenerateBitSequence() { std::vector> bits; std::pair bit; bit.first = inverted ? 0 : 1; bit.second = 0; return bits; } std::vector> KIBIS_WAVEFORM_HIGH_Z::GenerateBitSequence() { std::vector> bits; return bits; } std::vector> KIBIS_WAVEFORM_RECTANGULAR::GenerateBitSequence() { std::vector> bits; for( int i = 0; i < m_cycles; i++ ) { std::pair bit; bit.first = inverted ? 0 : 1; bit.second = ( m_ton + m_toff ) * i + m_delay; bits.push_back( bit ); bit.first = inverted ? 1 : 0; bit.second = ( m_ton + m_toff ) * i + m_delay + m_ton; bits.push_back( bit ); } return bits; } std::vector> KIBIS_WAVEFORM_PRBS::GenerateBitSequence() { std::vector> bitSequence; uint8_t polynomial = 0b1100000; //1100000 = x^7+x^6+1 //10100 = x^5+x^3+1 //110 = x^3+x^2+1 uint8_t seed = 0x12; // Any non zero state uint8_t lfsr = seed; if ( m_bitrate == 0 ) return bitSequence; double period = 1/m_bitrate; double t = 0; m_bits = abs( m_bits ); // Just to be sure. int bits = 0; do { uint8_t lsb = lfsr & 0x01; bitSequence.emplace_back( ( static_cast( inverted ) ^ lsb ? 1 : 0 ), t ); lfsr = lfsr >> 1; if ( lsb ) lfsr ^= polynomial; t += period; } while ( ++bits < m_bits ); return bitSequence; } bool KIBIS_WAVEFORM_RECTANGULAR::Check( IbisWaveform* aRisingWf, IbisWaveform* aFallingWf ) { bool status = true; if( m_cycles < 1 ) { status = false; Report( _( "Number of cycles should be greater than 0." ), RPT_SEVERITY_ERROR ); } if( m_ton <= 0 ) { status = false; Report( _( "ON time should be greater than 0." ), RPT_SEVERITY_ERROR ); } if( m_toff <= 0 ) { status = false; Report( _( "OFF time should be greater than 0." ), RPT_SEVERITY_ERROR ); } if( aRisingWf ) { if( m_ton < aRisingWf->m_table.m_entries.back().t ) { status = false; Report( _( "Rising edge is longer than on time." ), RPT_SEVERITY_WARNING ); } } if( aFallingWf ) { if( m_toff < aFallingWf->m_table.m_entries.back().t ) { status = false; Report( _( "Falling edge is longer than off time." ), RPT_SEVERITY_WARNING ); } } status &= aRisingWf && aFallingWf; return status; } bool KIBIS_WAVEFORM_RECTANGULAR::Check( dvdtTypMinMax aRisingRp, dvdtTypMinMax aFallingRp ) { bool status = true; if( m_cycles < 1 ) { status = false; Report( _( "Number of cycles should be greater than 0." ), RPT_SEVERITY_ERROR ); } if( m_ton <= 0 ) { status = false; Report( _( "ON time should be greater than 0." ), RPT_SEVERITY_ERROR ); } if( m_toff <= 0 ) { status = false; Report( _( "OFF time should be greater than 0." ), RPT_SEVERITY_ERROR ); } if( ( m_ton < aRisingRp.value[IBIS_CORNER::TYP].m_dt / 0.6 ) || ( m_ton < aRisingRp.value[IBIS_CORNER::MIN].m_dt / 0.6 ) || ( m_ton < aRisingRp.value[IBIS_CORNER::MAX].m_dt / 0.6 ) ) { status = false; Report( _( "Rising edge is longer than ON time." ), RPT_SEVERITY_ERROR ); } if( ( m_toff < aFallingRp.value[IBIS_CORNER::TYP].m_dt / 0.6 ) || ( m_toff < aFallingRp.value[IBIS_CORNER::MIN].m_dt / 0.6 ) || ( m_toff < aFallingRp.value[IBIS_CORNER::MAX].m_dt / 0.6 ) ) { status = false; Report( _( "Falling edge is longer than OFF time." ), RPT_SEVERITY_ERROR ); } return status; } bool KIBIS_WAVEFORM_PRBS::Check( dvdtTypMinMax aRisingRp, dvdtTypMinMax aFallingRp ) { bool status = true; if( m_bitrate <= 0 ) { status = false; Report( _( "Bitrate should be greater than 0." ), RPT_SEVERITY_ERROR ); } if( m_bits <= 0 ) { status = false; Report( _( "Number of bits should be greater than 0." ), RPT_SEVERITY_ERROR ); } if( m_bitrate && ( ( 1 / m_bitrate ) < ( aRisingRp.value[IBIS_CORNER::TYP].m_dt / 0.6 + aFallingRp.value[IBIS_CORNER::TYP].m_dt / 0.6 ) ) && ( ( 1 / m_bitrate ) < ( aRisingRp.value[IBIS_CORNER::TYP].m_dt / 0.6 + aFallingRp.value[IBIS_CORNER::TYP].m_dt / 0.6 ) ) && ( ( 1 / m_bitrate ) < ( aRisingRp.value[IBIS_CORNER::TYP].m_dt / 0.6 + aFallingRp.value[IBIS_CORNER::TYP].m_dt / 0.6 ) ) ) { status = false; Report( _( "Bitrate is too high for rising / falling edges" ), RPT_SEVERITY_ERROR ); } return status; } bool KIBIS_WAVEFORM_PRBS::Check( IbisWaveform* aRisingWf, IbisWaveform* aFallingWf ) { bool status = true; if( m_bitrate <= 0 ) { status = false; Report( _( "Bitrate should be greater than 0." ), RPT_SEVERITY_ERROR ); } if( m_bits <= 0 ) { status = false; Report( _( "Number of bits should be greater than 0." ), RPT_SEVERITY_ERROR ); } if( m_bitrate && aRisingWf && aFallingWf && ( ( 1 / m_bitrate ) < ( aRisingWf->m_table.m_entries.back().t + aFallingWf->m_table.m_entries.back().t ) ) ) { status = false; Report( _( "Bitrate could be too high for rising / falling edges" ), RPT_SEVERITY_WARNING ); } return status; }