Altera Quartus II Scripting Manuale Utente Scaricare il pdf (Pagina 625)

100

101

Chapter 3: Tcl Packages & Commands 3–495

timing_assignment

Example

## Specify the required minimum and maximum input

## delays on the input pin named "ipin" relative to

## the rising edge of the reference clock named "clk1"

set_input_delay 2ns -to "ipin" -clk_ref "clk1"

## Or, equivalently,

set_input_delay 2ns -to "ipin" -clk_ref "clk1" -min -max

## Specify the required minimum input delay on

## the input pin named "ipin" relative to the

## falling edge of the reference clock named "clk1"

set_input_delay 2ns -to "ipin" -clk_ref "clk1" -min -clock_fall

## Specify the required maximum input delay on

## input pins with names that start with "i"

## except those that start with "ibus"

assignment_group "input_pins" -add_member "i*" -add_exception "ibus*"

set_input_delay 2ns -to "input_pins" -max

MHz MegaHertz

GHz GigaHertz

Time Unit Description

1 2 ... 620 621 622 623 624 625 626 627 628 629 630 ... 633 634

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