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📄 cmos_fifo_usb.srr

📁 cmos数据到fifo再到usb的fifo部分程序(68013a)
💻 SRR
📖 第 1 页 / 共 2 页
字号:
Starting Clock         Frequency     Frequency     Period        Period        Slack     Type         Group              
-------------------------------------------------------------------------------------------------------------------------
cmos_fifo_usb|wclk     100.0 MHz     126.4 MHz     10.000        7.909         2.091     inferred     Inferred_clkgroup_0
=========================================================================================================================





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
------------------------------------------------------------------------------------------------------------------------------
cmos_fifo_usb|wclk  cmos_fifo_usb|wclk  |  10.000      2.091  |  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: cmos_fifo_usb|wclk
====================================



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

             Starting                                               Arrival          
Instance     Reference              Type       Pin     Net          Time        Slack
             Clock                                                                   
-------------------------------------------------------------------------------------
waddr[0]     cmos_fifo_usb|wclk     DFN1C0     Q       waddr[0]     0.483       2.091
waddr[1]     cmos_fifo_usb|wclk     DFN1C0     Q       waddr[1]     0.483       2.314
waddr[2]     cmos_fifo_usb|wclk     DFN1C0     Q       waddr[2]     0.483       2.851
waddr[4]     cmos_fifo_usb|wclk     DFN1C0     Q       waddr[4]     0.483       2.867
waddr[3]     cmos_fifo_usb|wclk     DFN1C0     Q       waddr[3]     0.483       2.948
ren          cmos_fifo_usb|wclk     DFN1P0     Q       ren          0.388       3.097
raddr[0]     cmos_fifo_usb|wclk     DFN1C0     Q       raddr[0]     0.388       3.100
raddr[2]     cmos_fifo_usb|wclk     DFN1C0     Q       raddr[2]     0.388       3.151
raddr[4]     cmos_fifo_usb|wclk     DFN1C0     Q       raddr[4]     0.388       3.303
raddr[5]     cmos_fifo_usb|wclk     DFN1C0     Q       raddr[5]     0.388       3.315
=====================================================================================


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

             Starting                                                 Required          
Instance     Reference              Type       Pin     Net            Time         Slack
             Clock                                                                      
----------------------------------------------------------------------------------------
waddr[7]     cmos_fifo_usb|wclk     DFN1C0     D       waddr_n7_i     9.590        2.091
waddr[6]     cmos_fifo_usb|wclk     DFN1C0     D       waddr_n6_i     9.590        2.753
raddr[3]     cmos_fifo_usb|wclk     DFN1C0     D       N_9            9.590        3.097
raddr[5]     cmos_fifo_usb|wclk     DFN1C0     D       N_13           9.590        3.097
raddr[8]     cmos_fifo_usb|wclk     DFN1C0     D       N_19           9.590        3.097
raddr[9]     cmos_fifo_usb|wclk     DFN1C0     D       raddr_n9       9.590        3.100
raddr[7]     cmos_fifo_usb|wclk     DFN1C0     D       N_17           9.590        3.168
raddr[2]     cmos_fifo_usb|wclk     DFN1C0     D       N_7            9.590        3.281
raddr[4]     cmos_fifo_usb|wclk     DFN1C0     D       N_11           9.590        3.281
raddr[6]     cmos_fifo_usb|wclk     DFN1C0     D       N_15           9.590        3.281
========================================================================================



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


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

    - Propagation time:                      7.499
    = Slack (critical) :                     2.091

    Number of logic level(s):                5
    Starting point:                          waddr[0] / Q
    Ending point:                            waddr[7] / D
    The start point is clocked by            cmos_fifo_usb|wclk [rising] on pin CLK
    The end   point is clocked by            cmos_fifo_usb|wclk [rising] on pin CLK

Instance / Net                Pin      Pin               Arrival     No. of    
Name               Type       Name     Dir     Delay     Time        Fan Out(s)
-------------------------------------------------------------------------------
waddr[0]           DFN1C0     Q        Out     0.483     0.483       -         
waddr[0]           Net        -        -       1.470     -           8         
waddr_n1_i_o2      NOR2B      B        In      -         1.953       -         
waddr_n1_i_o2      NOR2B      Y        Out     0.466     2.419       -         
N_86               Net        -        -       1.324     -           7         
waddr_n4_i_o2      NOR2B      B        In      -         3.743       -         
waddr_n4_i_o2      NOR2B      Y        Out     0.466     4.209       -         
N_89               Net        -        -       0.841     -           4         
waddr_n6_i_o2      NOR2B      B        In      -         5.050       -         
waddr_n6_i_o2      NOR2B      Y        Out     0.466     5.516       -         
N_91               Net        -        -       0.469     -           2         
waddr_n7_i_a2      OR2        B        In      -         5.985       -         
waddr_n7_i_a2      OR2        Y        Out     0.481     6.466       -         
waddr_n7_i_a2      Net        -        -       0.279     -           1         
waddr_n7_i         NOR3B      B        In      -         6.745       -         
waddr_n7_i         NOR3B      Y        Out     0.475     7.220       -         
waddr_n7_i         Net        -        -       0.279     -           1         
waddr[7]           DFN1C0     D        In      -         7.499       -         
===============================================================================
Total path delay (propagation time + setup) of 7.909 is 3.248(41.1%) logic and 4.661(58.9%) route.



##### END OF TIMING REPORT #####]

--------------------------------------------------------------------------------
Report for cell cmos_fifo_usb.verilog
  Core Cell usage:
              cell count     area count*area
               AO1     1      1.0        1.0
              AO1B     2      1.0        2.0
              AO1C     1      1.0        1.0
              AO1D     1      1.0        1.0
              AOI1     8      1.0        8.0
             AOI1B     2      1.0        2.0
              AX1E     1      1.0        1.0
              BUFF    10      1.0       10.0
               GND     2      0.0        0.0
               MX2    32      1.0       32.0
              NOR2     5      1.0        5.0
             NOR2A     9      1.0        9.0
             NOR2B    19      1.0       19.0
              NOR3     8      1.0        8.0
             NOR3A     5      1.0        5.0
             NOR3B     1      1.0        1.0
             NOR3C    13      1.0       13.0
              OA1A     1      1.0        1.0
              OA1B     1      1.0        1.0
              OA1C     1      1.0        1.0
               OR2    11      1.0       11.0
              OR2A     7      1.0        7.0
              OR2B     3      1.0        3.0
              OR3B     2      1.0        2.0
              OR3C     2      1.0        2.0
               VCC     2      0.0        0.0
              XA1B     9      1.0        9.0
              XA1C     2      1.0        2.0


              DFN1     4      1.0        4.0
            DFN1C0    37      1.0       37.0
            DFN1P0     2      1.0        2.0
         RAM512X18     3      0.0        0.0
                   -----          ----------
             TOTAL   207               200.0


  IO Cell usage:
              cell count
             INBUF    14
            OUTBUF     2
           TRIBUFF    16
                   -----
             TOTAL    32


Core Cells         : 200 of 61536 (0%)
IO Cells           : 32

RAM/ROM Usage Summary
Block Rams : 3 of 4 (75%)

Mapper successful!
Process took 0h:00m:02s realtime, 0h:00m:02s cputime
# Wed May 21 14:38:01 2008

###########################################################]

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