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Altera_Forum's avatar
Altera_Forum
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11 years ago

ALTSHIFT_TAPS and timing issue

I am having some problems going from simulation to synthesis in my design. The simulation works fine while the synthesized and fitted design does not. I have written a test bench to synthesize a t...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

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I am decimating the sampling rate by 8. Sorry.

So I need to perform 96 calculations per sample but the output of the decimating filter is read only on one sample in eight.

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you only need 12 multipliers.

Decimation by 8 means you do not need to output but once every 8 and so you have 7 more left time slots (clock ticks) to use same 12 multipliers the add up the results (accumulate) ready for nest output.