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Yogesh's avatar
Yogesh
Icon for Occasional Contributor rankOccasional Contributor
5 years ago

How many 9x9 multipliers can we use in case of Cyclone V GT FPGA?

1) In MAX 10 series , there are embedded 18x18 multipliers, each 18x18 multiplier can be used as two 9x9 multipliers(mentioned in the document page-3) https://www.intel.com/content/dam/www/programma...
CheepinC_altera's avatar
CheepinC_altera
Icon for Regular Contributor rankRegular Contributor
5 years ago

Hi,

Yes, your understanding is correct. A CV DSP block can only implement max three 9x9 multipliers. You may refer to the CV device handook vol 1 -> "CV Variable Precision DSP Blocks Operational Modes for Cyclone V Devices" for supported operational modes. There is no specific explanation on why max three 9x9 multipliers but I believe it is limited by the internal architecture of the DSP block.