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

ID 683213
Date 7/24/2020
Document Table of Contents

3.6.4. Sum of Square Mode

The Arria® V variable precision DSP block can implement one sum of square mode.

Figure 53. One Sum of Square Mode Equation

You can feed the four 18-bit inputs into the pre-adder block to convert b and d input as two’s complement numbers to perform subtraction, if required.

You can feed each 18-bit pre-adder block output into both multiplicand and multiplier inputs of an 18 x 18 multiplier to generate a square result.

Figure 54. One Sum of Square Mode in a Variable Precision DSP Block for Arria® V GZ Devices

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