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What is the number of minimum DSP required to achieve D(32 bit)=A(5 bit)*B(32 bit)+C(32 bit) functio

FPGAOLOG
New Contributor I
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What is the number of minimum DSP required to achieve D(32 bits)=(A(5 bits)*B(32 bits)) truncated to 32 bits +C(32 bits) function, and the modes of the DSPs

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Kshitij_Intel
Employee
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Hi,


Which device you are targeting and generally DSP slices has 25x18 multipliers but you have the input of 32 bits.

In general 1 multiply and addition operation consumes 1 DSP slice.



Above figure will use 2 DSP slices, considering x[n] and c[n] is of 15-bits.


Thank you

Kshitij Goel


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FPGAOLOG
New Contributor I
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Sorry missed the device info. It is Agilex device. Is there a way to pack it into one DSP?

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Kshitij_Intel
Employee
368 Views

Hi,


The only way is reduce the number of bits for your variables. FYR.


https://www.intel.com/content/www/us/en/docs/programmable/683037/21-2/features-88692.html


Thank you

Kshitij Goel


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