1/*****************************************************************************
2 *                                McPAT/CACTI
3 *                      SOFTWARE LICENSE AGREEMENT
4 *            Copyright 2012 Hewlett-Packard Development Company, L.P.
5 *            Copyright (c) 2010-2013 Advanced Micro Devices, Inc.
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31 ***************************************************************************/
32
33
34#ifndef __CROSSBAR__
35#define __CROSSBAR__
36
37#include <assert.h>
38
39#include <iostream>
40
41#include "basic_circuit.h"
42#include "cacti_interface.h"
43#include "component.h"
44#include "mat.h"
45#include "parameter.h"
46#include "wire.h"
47
48class Crossbar : public Component {
49public:
50    Crossbar(
51        double in,
52        double out,
53        double flit_sz,
54        TechnologyParameter::DeviceType *dt = &(g_tp.peri_global));
55    ~Crossbar();
56
57    void print_crossbar();
58    double output_buffer();
59    void compute_power();
60
61    double n_inp, n_out;
62    double flit_size;
63    double tri_inp_cap, tri_out_cap, tri_ctr_cap, tri_int_cap;
64
65private:
66    double CB_ADJ;
67    /*
68     * Adjust factor of the height of the cross-point (tri-state buffer) cell (layout) in crossbar
69     * buffer is adjusted to get an aspect ratio of whole cross bar close to one;
70     * when adjust the ratio, the number of wires route over the tri-state buffers does not change,
71     * however, the effective wiring pitch changes. Specifically, since CB_ADJ will increase
72     * during the adjust, the tri-state buffer will become taller and thiner, and the effective wiring pitch
73     * will increase. As a result, the height of the crossbar (area.h) will increase.
74     */
75
76    TechnologyParameter::DeviceType *deviceType;
77    double TriS1, TriS2;
78    double min_w_pmos, Vdd;
79
80};
81
82
83
84
85#endif
86