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  3. how to synthesize delay elements in RTL complier

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how to synthesize delay elements in RTL complier

micro469
micro469 over 11 years ago

hi there,i am new to RTL compiler. I have delay element to synthesize in which the  input is assigned to output after some delay  .The state ment  i used shown below.

assign #5 out=in;

But when i am synthesizing in RTL the delay is ignored. So are there any attributes i have to add to synthesis delays in RTL compiler? if not is there any other way to make delay elements? . I would be greatful to if you include sample code or snippet. Thanks in advance.  

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  • grasshopper
    grasshopper over 11 years ago

    Hi micro469,

     delay elements are not synthesizable. They simply get ignored by synthesis tools. Delay cells normally require hand-instantiation and dont_touch attributes since they serve no functional purpose

     gh-

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  • grasshopper
    grasshopper over 11 years ago

    Hi micro469,

     delay elements are not synthesizable. They simply get ignored by synthesis tools. Delay cells normally require hand-instantiation and dont_touch attributes since they serve no functional purpose

     gh-

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