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/*******************************************************************************
* Copyright (c) 2012-2013, The Microsystems Design Labratory (MDL)
* Department of Computer Science and Engineering, The Pennsylvania State University
* Exascale Computing Lab, Hewlett-Packard Company
* All rights reserved.
*
* This source code is part of NVSim - An area, timing and power model for both
* volatile (e.g., SRAM, DRAM) and non-volatile memory (e.g., PCRAM, STT-RAM, ReRAM,
* SLC NAND Flash). The source code is free and you can redistribute and/or modify it
* by providing 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.
*
* 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.
*
* Author list:
* Cong Xu ( Email: czx102 at psu dot edu
* Website: http://www.cse.psu.edu/~czx102/ )
* Xiangyu Dong ( Email: xydong at cse dot psu dot edu
* Website: http://www.cse.psu.edu/~xydong/ )
*******************************************************************************/
#ifndef OUTPUTDRIVER_H_
#define OUTPUTDRIVER_H_
#include "FunctionUnit.h"
#include "constant.h"
#include "typedef.h"
class OutputDriver: public FunctionUnit {
public:
OutputDriver();
virtual ~OutputDriver();
/* Functions */
void PrintProperty();
void Initialize(double _logicEffort, double _inputCap, double _outputCap, double _outputRes,
bool _inv, BufferDesignTarget _areaOptimizationLevel, double _minDriverCurrent);
void CalculateArea();
void CalculateRC();
void CalculateLatency(double _rampInput);
void CalculatePower();
OutputDriver & operator=(const OutputDriver &);
/* Properties */
bool initialized; /* Initialization flag */
bool invalid; /*Invalidatio flag */
double logicEffort; /* The logic effort of the gate that needs this driver */
double inputCap; /* Input capacitance, unit: F */
double outputCap; /* Output capacitance, unit: F */
double outputRes; /* Output resistance, unit: ohm */
bool inv; /* Whether the invert chain causes a flip */
int numStage; /* Number of inverter chain stages */
BufferDesignTarget areaOptimizationLevel; /* 0 for latency, 2 for area */
double minDriverCurrent; /* Minimum driving current should be provided */
double widthNMOS[MAX_INV_CHAIN_LEN];
double widthPMOS[MAX_INV_CHAIN_LEN];
double capInput[MAX_INV_CHAIN_LEN];
double capOutput[MAX_INV_CHAIN_LEN];
double rampInput, rampOutput;
};
#endif /* OUTPUTDRIVER_H_ */