Altera Quartus II Scripting Manual de usuario descargar pdf (Pagina 623)

100

101

Chapter 3: Tcl Packages & Commands 3–493

timing_assignment

These two Tcl commands reside in the ::quartus::project Tcl package. You must save assignment changes

before you run Quartus®II command-line executables. Note, however, that the Tcl commands

"execute_flow" and "execute_module" (part of the ::quartus::flow Tcl package) automatically call

"export_assignments" before they run command-line executables.

Example

## Specify a simple setup uncertainty of .3ns

## and a simple hold uncertainty of .1ns

set_clock_uncertainty 0.3ns -to clk -setup

set_clock_uncertainty 0.1ns -to clk -hold

## Both of the following commands specify a

## simple setup and hold uncertainty of .3ns

set_clock_uncertainty 0.3ns -to clk

## or

set_clock_uncertainty 0.3ns -to clk -setup -hold

## Specify an interlock setup uncertainty of .3ns

## and an interlock hold uncertainty of .1ns

set_clock_uncertainty 0.3ns -to clk -from src_clk -setup

set_clock_uncertainty 0.1ns -to clk -from src_clk -hold

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Altera Quartus II Scripting Manual de usuario Pagina 623

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