The DSP_FOLDING attribute controls whether the
Vivado synthesis folds two MAC structures connected with an
adder into one DSP primitive.
The values for DSP_FOLDING are:
- yes
- The tool converts MAC structures.
- no
- The tool does not convert MAC structures.
DSP_FOLDING is supported in RTL only. It
should be placed on the module/entity/architecture of the logic that contains the MAC
structures.