3.4.2.1 Merging Multiple Cascade Chains

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Multiple cascade chains can be merged using either the C input of math block or adders constructed in the fabric. Extra pipelined register must be added to adjust the latency.

The following figure shows multiple cascaded chains merged using a math block C input.

Figure 3-4. Merging Cascade Chains Using C Input

The following figure shows multiple cascaded chains merged with fabric adders.

Figure 3-5. Merging Cascade Chains Using Fabric Adders

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