ElectricalNet.cc revision 10448
110448Snilay@cs.wisc.edu/* Copyright (c) 2012 Massachusetts Institute of Technology 210448Snilay@cs.wisc.edu * 310448Snilay@cs.wisc.edu * Permission is hereby granted, free of charge, to any person obtaining a copy 410448Snilay@cs.wisc.edu * of this software and associated documentation files (the "Software"), to deal 510448Snilay@cs.wisc.edu * in the Software without restriction, including without limitation the rights 610448Snilay@cs.wisc.edu * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 710448Snilay@cs.wisc.edu * copies of the Software, and to permit persons to whom the Software is 810448Snilay@cs.wisc.edu * furnished to do so, subject to the following conditions: 910448Snilay@cs.wisc.edu * 1010448Snilay@cs.wisc.edu * The above copyright notice and this permission notice shall be included in 1110448Snilay@cs.wisc.edu * all copies or substantial portions of the Software. 1210448Snilay@cs.wisc.edu * 1310448Snilay@cs.wisc.edu * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 1410448Snilay@cs.wisc.edu * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 1510448Snilay@cs.wisc.edu * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 1610448Snilay@cs.wisc.edu * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 1710448Snilay@cs.wisc.edu * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 1810448Snilay@cs.wisc.edu * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 1910448Snilay@cs.wisc.edu * THE SOFTWARE. 2010448Snilay@cs.wisc.edu */ 2110448Snilay@cs.wisc.edu 2210447Snilay@cs.wisc.edu 2310447Snilay@cs.wisc.edu#include "model/timing_graph/ElectricalNet.h" 2410447Snilay@cs.wisc.edu#include "model/timing_graph/ElectricalLoad.h" 2510447Snilay@cs.wisc.edu 2610447Snilay@cs.wisc.edunamespace DSENT 2710447Snilay@cs.wisc.edu{ 2810447Snilay@cs.wisc.edu //------------------------------------------------------------------------- 2910447Snilay@cs.wisc.edu // Electrical Net 3010447Snilay@cs.wisc.edu //------------------------------------------------------------------------- 3110447Snilay@cs.wisc.edu 3210447Snilay@cs.wisc.edu ElectricalNet::ElectricalNet(const String& instance_name_, ElectricalModel* model_) 3310447Snilay@cs.wisc.edu : ElectricalTimingNode(instance_name_, model_), m_distributed_res_(0), m_distributed_cap_(0) 3410447Snilay@cs.wisc.edu { 3510447Snilay@cs.wisc.edu 3610447Snilay@cs.wisc.edu } 3710447Snilay@cs.wisc.edu 3810447Snilay@cs.wisc.edu ElectricalNet::~ElectricalNet() 3910447Snilay@cs.wisc.edu { 4010447Snilay@cs.wisc.edu 4110447Snilay@cs.wisc.edu } 4210447Snilay@cs.wisc.edu 4310447Snilay@cs.wisc.edu double ElectricalNet::calculateDelay() const 4410447Snilay@cs.wisc.edu { 4510447Snilay@cs.wisc.edu // Remember that this is a pi model, delay is distributed cap * distributed_res / 2 + 4610447Snilay@cs.wisc.edu // distributed res * (other downstream caps) 4710447Snilay@cs.wisc.edu return 0.693 * (getTotalDownstreamCap() - m_distributed_cap_ / 2) * m_distributed_res_; 4810447Snilay@cs.wisc.edu } 4910447Snilay@cs.wisc.edu 5010447Snilay@cs.wisc.edu double ElectricalNet::calculateTransition() const 5110447Snilay@cs.wisc.edu { 5210447Snilay@cs.wisc.edu return 1.386 * getMaxUpstreamRes() * (m_distributed_cap_ * 0.2 + ElectricalTimingNode::getTotalDownstreamCap()); 5310447Snilay@cs.wisc.edu } 5410447Snilay@cs.wisc.edu 5510447Snilay@cs.wisc.edu double ElectricalNet::getMaxUpstreamRes() const 5610447Snilay@cs.wisc.edu { 5710447Snilay@cs.wisc.edu return m_distributed_res_ + ElectricalTimingNode::getMaxUpstreamRes(); 5810447Snilay@cs.wisc.edu } 5910447Snilay@cs.wisc.edu 6010447Snilay@cs.wisc.edu double ElectricalNet::getTotalDownstreamCap() const 6110447Snilay@cs.wisc.edu { 6210447Snilay@cs.wisc.edu return m_distributed_cap_ + ElectricalTimingNode::getTotalDownstreamCap(); 6310447Snilay@cs.wisc.edu } 6410447Snilay@cs.wisc.edu 6510447Snilay@cs.wisc.edu void ElectricalNet::setDistributedCap(double distributed_cap_) 6610447Snilay@cs.wisc.edu { 6710447Snilay@cs.wisc.edu m_distributed_cap_ = distributed_cap_; 6810447Snilay@cs.wisc.edu return; 6910447Snilay@cs.wisc.edu } 7010447Snilay@cs.wisc.edu 7110447Snilay@cs.wisc.edu void ElectricalNet::setDistributedRes(double distributed_res_) 7210447Snilay@cs.wisc.edu { 7310447Snilay@cs.wisc.edu m_distributed_res_ = distributed_res_; 7410447Snilay@cs.wisc.edu return; 7510447Snilay@cs.wisc.edu } 7610447Snilay@cs.wisc.edu 7710447Snilay@cs.wisc.edu double ElectricalNet::getDistributedCap() const 7810447Snilay@cs.wisc.edu { 7910447Snilay@cs.wisc.edu return m_distributed_cap_; 8010447Snilay@cs.wisc.edu } 8110447Snilay@cs.wisc.edu 8210447Snilay@cs.wisc.edu double ElectricalNet::getDistributedRes() const 8310447Snilay@cs.wisc.edu { 8410447Snilay@cs.wisc.edu return m_distributed_res_; 8510447Snilay@cs.wisc.edu } 8610447Snilay@cs.wisc.edu 8710447Snilay@cs.wisc.edu bool ElectricalNet::isNet() const 8810447Snilay@cs.wisc.edu { 8910447Snilay@cs.wisc.edu return true; 9010447Snilay@cs.wisc.edu } 9110447Snilay@cs.wisc.edu 9210447Snilay@cs.wisc.edu} // namespace DSENT 9310447Snilay@cs.wisc.edu 9410447Snilay@cs.wisc.edu 95