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How to infer rounding and/or saturation into a DSP block

Altera_Forum
Contributeur émérite II
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Hi, 

 

I'm inferring most of my filters/equations in DSP blocks from HDL code, which works good. I would like to know if it is possible to infer rounding and/or saturation in the First/Second Round/Saturate stage of the Stratix III DSP block. I did not found any recommended HDL coding style for this part. Does anyone here know how I could do it? 

 

 

Tool: Quartus II 9.1 SP1 

Device: Stratix III (but I think all DSP blocks of the Stratix family are the same?)
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Altera_Forum
Contributeur émérite II
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i don't think you can infer rounding/saturation in dsp blocks.

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