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Observer
Observer
8,710 Views
Registered: ‎11-27-2008

How to calculate the setup time and hold time of the datasheet report in timing Analysis?

 How to calculate the setup time and hold time of the datasheet report in timing Analysis?

 

As follows,  How to calculate the hold time(edge)?

 

 

Setup/Hold to clock pci_clk
---------------+------------+------------+------------------+--------+
               |  Setup to  |  Hold to   |                  | Clock  |
Source      | clk (edge) | clk (edge) |Internal Clock(s) | Phase  |
---------------+------------+------------+------------------+--------+
io_a_pad[0]    |    0.153(R)|    4.806(R)|pci_clk_int       |   0.000|
io_a_pad[1]    |    0.137(R)|    5.237(R)|pci_clk_int       |   0.000|
io_a_pad[2]    |    0.142(R)|    6.642(R)|pci_clk_int       |   0.000|
io_a_pad[3]    |    0.181(R)|    6.327(R)|pci_clk_int       |   0.000|
io_a_pad[4]    |    0.169(R)|    6.374(R)|pci_clk_int       |   0.000|
io_a_pad[5]    |    0.211(R)|    6.310(R)|pci_clk_int       |   0.000|
io_a_pad[6]    |    0.204(R)|    6.306(R)|pci_clk_int       |   0.000|
io_a_pad[7]    |    0.193(R)|    6.349(R)|pci_clk_int       |   0.000|
io_a_pad[8]    |    0.189(R)|    5.924(R)|pci_clk_int       |   0.000|
io_a_pad[9]    |    0.186(R)|    6.159(R)|pci_clk_int       |   0.000|
io_a_pad[10]   |    0.178(R)|    6.098(R)|pci_clk_int       |   0.000|
io_a_pad[11]   |    0.194(R)|    5.912(R)|pci_clk_int       |   0.000|
io_a_pad[12]   |    0.189(R)|    5.930(R)|pci_clk_int       |   0.000|
io_a_pad[13]   |    0.210(R)|    5.889(R)|pci_clk_int       |   0.000|

 

 

anybody can  tell me how to calcauate the time in the  datasheet report in timing Analysis?

 

 

setup/hold to clock *****;

clock **** to pad ,

clock to setup on destination clock******,

pad to pad...

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Xilinx Employee
Xilinx Employee
8,688 Views
Registered: ‎11-28-2007

Re: How to calculate the setup time and hold time of the datasheet report in timing Analysis?

Dear mrpp,

 

these tables are an overview of the offset in/out calculations.

if you don't have any offset in/out constraints, you can generate a timing report, select "unconstrained paths" and set a good amount of paths (14 instead of the default 1 or 3)

 

 

best regards,

Dries

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