Variable Precision DSP Blocks User Guide: Agilex™ 5 FPGAs and SoCs
Visible to Intel only — GUID: ysb1690741054470
Ixiasoft
Visible to Intel only — GUID: ysb1690741054470
Ixiasoft
8.2.1.5. Pre-adder Constant Mode
In this mode, one multiplier operand derives from the input port, and the other operand derives from the internal coefficient storage. The coefficient storage allows up to 8 preset constants. The coefficient selection signals are coefsel[0..2].
This mode is expressed in the following equation.

The following figure shows the pre-adder constant mode of a multiplier.