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Altera_Forum
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13 years ago

about vhdl code for cic interpolation filter

i am attaching one pdf file based on cic filter.In the bitgrowth section the author has mentioned about the increase in the bits at the output stage .Suppose if i am writing a vhdl code for cic inter...
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Altera_Forum
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12 years ago

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The final output ifilterout33 is coming as undefined . I tried as you said.But still there is problem in the output.

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I guess you are talking about functional simulation resuts? The uninitialized register ifilterout32 is propagating to the last integrator stage.

You need to initialize all register variables in functional simulation.