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

ID 683665
Date 10/18/2023
Public
Document Table of Contents

3.2. Supported Operational Modes in Stratix V Devices

Table 15.  Variable Precision DSP Blocks Operational Modes for Stratix® V Devices
Variable Precision DSP Block Resources Operational Mode Supported Instance Pre-adder Support Coefficient Support Input Cascade Support Chainout Support
1 variable precision DSP block Independent 9 x 9 multiplication 3 No No No No
Independent 16 x 16 multiplication 2 Yes Yes Yes No
Independent 18 x 18 partial multiplication (32-bit) 2 Yes Yes Yes No
Independent 18 x 18 multiplication 1 Yes Yes Yes No
Independent 27 x 27 multiplication 1 Yes Yes Yes Yes
Independent 36 x 18 multiplication 1 No Yes No Yes
Two 18 x 18 multiplier adder 1 Yes Yes Yes Yes
Two 16 x 16 multiplier adder 1 Yes Yes Yes Yes
Sum of 2 square 1 Yes 1 No No Yes
18 x 18 multiplication summed with 36-bit input 1 No No No Yes
2 variable precision DSP blocks Independent 18 x 18 multiplication 3 No No No No
Independent 36 x 36 multiplication 1 No No No No
Complex 18 x 18 multiplication 1 Yes Yes Yes Yes
Four 18 x 18 multiplier adder 1 Yes Yes Yes No
Two 27 x 27 multiplier adder 1 Yes Yes Yes No
Two 18 x 36 multiplier adder 1 No Yes No No
3 variable precision DSP blocks Complex 18 x 25 multiplication 1 Yes1 No No No
4 variable precision DSP blocks Complex 27 x 27 multiplication 1 Yes Yes Yes No
1 The pre-adder feature for this mode is automatically enabled.