Stratix V Device Handbook: Volume 1: Device Interfaces and Integration

ID 683665
Date 11/23/2021
Document Table of Contents

3.5.2. Pre-Adder

Stratix V Devices

The pre-adder supports both addition and subtraction, which you must choose during compilation time.

Each variable precision DSP block has two 18-bit pre-adders. You can configure these pre-adders in the following configurations:

  • Two independent 18-bit adders for 18-bit applications
  • One 26-bit adder for 27-bit applications

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