ElectricalDriverMultiplier.h revision 10448:bc1a3b7ab5ef
1/* Copyright (c) 2012 Massachusetts Institute of Technology 2 * 3 * Permission is hereby granted, free of charge, to any person obtaining a copy 4 * of this software and associated documentation files (the "Software"), to deal 5 * in the Software without restriction, including without limitation the rights 6 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 7 * copies of the Software, and to permit persons to whom the Software is 8 * furnished to do so, subject to the following conditions: 9 * 10 * The above copyright notice and this permission notice shall be included in 11 * all copies or substantial portions of the Software. 12 * 13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 18 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 19 * THE SOFTWARE. 20 */ 21 22#ifndef __DSENT_MODEL_ELECTRICAL_DRIVER_MULTIPLIER_H__ 23#define __DSENT_MODEL_ELECTRICAL_DRIVER_MULTIPLIER_H__ 24 25#include "util/CommonType.h" 26#include "model/timing_graph/ElectricalTimingNode.h" 27 28namespace DSENT 29{ 30 // Simple class that can be used to mimic the presence of multiple drivers 31 // output drivers (each driving one of the downstream loads) when only one 32 // such driver has been instantiated (such as models that take advantage of 33 // bit duplicattion). When the downsream loads differ in load cap, it 34 // just returns the largest of the caps 35 class ElectricalDriverMultiplier : public ElectricalTimingNode 36 { 37 public: 38 ElectricalDriverMultiplier(const String& instance_name_, ElectricalModel* model_); 39 virtual ~ElectricalDriverMultiplier(); 40 41 public: 42 // Calculate drive resistance of this node; 43 double calculateDriveRes(double input_drive_res_) const; 44 // Calculate wiring delay (or net delay) 45 double calculateDelay() const; 46 // Calculate transition 47 double calculateTransition() const; 48 // get total amount of downstream load capacitance 49 double getTotalDownstreamCap() const; 50 51 private: 52 // Disable copy constructor 53 ElectricalDriverMultiplier(const ElectricalDriverMultiplier& net_); 54 55 private: 56 // Name of this instance 57 String m_instance_name_; 58 }; 59 60} // namespace DSENT 61 62#endif // __DSENT_MODEL_ELECTRICAL_DRIVER_MULTIPLIER_H__ 63 64