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