main.srr

基于FPGA的VHDL编程实现各种音频信号

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Worst slack in design: 1.029

                                           Requested     Estimated     Requested     Estimated               Clock        Clock              
Starting Clock                             Frequency     Frequency     Period        Period        Slack     Type         Group              
---------------------------------------------------------------------------------------------------------------------------------------------
key_measure|cnt_inferred_clock[16]         100.0 MHz     775.9 MHz     10.000        1.289         8.711     inferred     Inferred_clkgroup_0
key_measure|key_done_inferred_clock        100.0 MHz     243.6 MHz     10.000        4.105         5.895     inferred     Inferred_clkgroup_1
main|PLL_25M_U0.clk_25m_inferred_clock     100.0 MHz     111.5 MHz     10.000        8.971         1.029     inferred     Inferred_clkgroup_2
=============================================================================================================================================





Clock Relationships
*******************

Clocks                                                                          |    rise  to  rise   |    fall  to  fall   |    rise  to  fall   |    fall  to  rise 
----------------------------------------------------------------------------------------------------------------------------------------------------------------------
Starting                                Ending                                  |  constraint  slack  |  constraint  slack  |  constraint  slack  |  constraint  slack
----------------------------------------------------------------------------------------------------------------------------------------------------------------------
key_measure|cnt_inferred_clock[16]      key_measure|cnt_inferred_clock[16]      |  10.000      8.711  |  No paths    -      |  No paths    -      |  No paths    -    
key_measure|key_done_inferred_clock     key_measure|key_done_inferred_clock     |  10.000      5.895  |  No paths    -      |  No paths    -      |  No paths    -    
main|PLL_25M_U0.clk_25m_inferred_clock  main|PLL_25M_U0.clk_25m_inferred_clock  |  10.000      1.029  |  No paths    -      |  No paths    -      |  No paths    -    
======================================================================================================================================================================
 Note: 'No paths' indicates there are no paths in the design for that pair of clock edges.
       'Diff grp' indicates that paths exist but the starting clock and ending clock are in different clock groups.



Interface Information 
*********************

		No IO constraint found 



====================================
Detailed Report for Clock: key_measure|cnt_inferred_clock[16]
====================================



Starting Points with Worst Slack
********************************

                        Starting                                                          Arrival          
Instance                Reference                              Type     Pin     Net       Time        Slack
                        Clock                                                                              
-----------------------------------------------------------------------------------------------------------
key_measure_0.dout1     key_measure|cnt_inferred_clock[16]     DFN1     Q       dout1     0.476       8.711
key_measure_0.dout2     key_measure|cnt_inferred_clock[16]     DFN1     Q       dout2     0.476       8.711
===========================================================================================================


Ending Points with Worst Slack
******************************

                        Starting                                                          Required          
Instance                Reference                              Type     Pin     Net       Time         Slack
                        Clock                                                                               
------------------------------------------------------------------------------------------------------------
key_measure_0.dout2     key_measure|cnt_inferred_clock[16]     DFN1     D       dout1     9.590        8.711
key_measure_0.dout3     key_measure|cnt_inferred_clock[16]     DFN1     D       dout2     9.590        8.711
============================================================================================================



Worst Path Information
***********************


Path information for path number 1: 
    Requested Period:                        10.000
    - Setup time:                            0.410
    = Required time:                         9.590

    - Propagation time:                      0.879
    = Slack (non-critical) :                 8.711

    Number of logic level(s):                0
    Starting point:                          key_measure_0.dout1 / Q
    Ending point:                            key_measure_0.dout2 / D
    The start point is clocked by            key_measure|cnt_inferred_clock[16] [rising] on pin CLK
    The end   point is clocked by            key_measure|cnt_inferred_clock[16] [rising] on pin CLK

Instance / Net                   Pin      Pin               Arrival     No. of    
Name                    Type     Name     Dir     Delay     Time        Fan Out(s)
----------------------------------------------------------------------------------
key_measure_0.dout1     DFN1     Q        Out     0.476     0.476       -         
dout1                   Net      -        -       0.402     -           2         
key_measure_0.dout2     DFN1     D        In      -         0.879       -         
==================================================================================
Total path delay (propagation time + setup) of 1.289 is 0.886(68.8%) logic and 0.402(31.2%) route.




====================================
Detailed Report for Clock: key_measure|key_done_inferred_clock
====================================



Starting Points with Worst Slack
********************************

                              Starting                                                                  Arrival          
Instance                      Reference                               Type       Pin     Net            Time        Slack
                              Clock                                                                                      
-------------------------------------------------------------------------------------------------------------------------
key_measure_0.key_temp[1]     key_measure|key_done_inferred_clock     DFN1C1     Q       key_out[1]     0.476       5.895
key_measure_0.key_temp[2]     key_measure|key_done_inferred_clock     DFN1C1     Q       key_out[2]     0.476       6.004
key_measure_0.key_temp[0]     key_measure|key_done_inferred_clock     DFN1C1     Q       key_out[0]     0.476       6.100
key_measure_0.key_temp[3]     key_measure|key_done_inferred_clock     DFN1C1     Q       key_out[3]     0.476       6.710
=========================================================================================================================


Ending Points with Worst Slack
******************************

                              Starting                                                                     Required          
Instance                      Reference                               Type       Pin     Net               Time         Slack
                              Clock                                                                                          
-----------------------------------------------------------------------------------------------------------------------------
key_measure_0.key_temp[3]     key_measure|key_done_inferred_clock     DFN1C1     D       key_temp_5[3]     9.590        5.895
key_measure_0.key_temp[2]     key_measure|key_done_inferred_clock     DFN1C1     D       I_9_0             9.590        6.678
key_measure_0.key_temp[1]     key_measure|key_done_inferred_clock     DFN1C1     D       I_5_0             9.690        7.033
key_measure_0.key_temp[0]     key_measure|key_done_inferred_clock     DFN1C1     D       I_4               9.590        7.458
=============================================================================================================================



Worst Path Information
***********************


Path information for path number 1: 
    Requested Period:                        10.000
    - Setup time:                            0.410
    = Required time:                         9.590

    - Propagation time:                      3.696
    = Slack (non-critical) :                 5.895

    Number of logic level(s):                3
    Starting point:                          key_measure_0.key_temp[1] / Q
    Ending point:                            key_measure_0.key_temp[3] / D
    The start point is clocked by            key_measure|key_done_inferred_clock [rising] on pin CLK
    The end   point is clocked by            key_measure|key_done_inferred_clock [rising] on pin CLK

Instance / Net                                 Pin      Pin               Arrival     No. of    
Name                                Type       Name     Dir     Delay     Time        Fan Out(s)
------------------------------------------------------------------------------------------------
key_measure_0.key_temp[1]           DFN1C1     Q        Out     0.476     0.476       -         
key_out[1]                          Net        -        -       1.261     -           8         
key_measure_0.un6_key_temp.I_12     AND3       B        In      -         1.737       -         
key_measure_0.un6_key_temp.I_12     AND3       Y        Out     0.469     2.206       -         
N_4_0                               Net        -        -       0.239     -           1         
key_measure_0.un6_key_temp.I_13     XOR2       A        In      -         2.445       -         
key_measure_0.un6_key_temp.I_13     XOR2       Y        Out     0.313     2.758       -         
I_13_0                              Net        -        -       0.239     -           1         
key_measure_0.key_temp_5[3]         NOR2A      A        In      -         2.997       -         
key_measure_0.key_temp_5[3]         NOR2A      Y        Out     0.460     3.456       -         
key_temp_5[3]                       Net        -        -       0.239     -           1         
key_measure_0.key_temp[3]           DFN1C1     D        In      -         3.696       -         
================================================================================================
Total path delay (propagation time + setup) of 4.105 is 2.127(51.8%) logic and 1.978(48.2%) route.




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