Intel® Stratix® 10 Variable Precision DSP Blocks User Guide

ID 683832
Date 8/13/2021
Document Table of Contents

7.2.4. Double Accumulator

The double accumulator feature adds an additional register in the accumulator feedback path that process the interleaved complex data (I, Q) . The double accumulator register follows the output register, which includes the clock, clock enable, and aclr. The additional accumulator register returns result with a one-cycle delay. This feature enables you to have two accumulator channels with the same resource count.

The following figure shows the double accumulator implementation.

Figure 42. Double Accumulator

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