Can I use the accumulator or adder components of the Stratix™ device digital signal processing (DSP) block without using the multiplier?

Description

No.You must use the DSP block's adder and accumulator components in conjunction with the multiplier. To use the DSP block as an adder/accumulator, set one of the inputs to the multiplier to "1". However, using a DSP block for an adder will not have the same performance as an adder implemented in logic cells