Multiply-Add block sharing minimum bitwidth

Specify the minimum bit width that is required to share Multiply-Add with the resource sharing optimization

Since R2021a

Model Configuration Pane: Optimization / Resource sharing

Description

Use this parameter to specify the minimum bit width that is required to share Multiply-Add with the resource sharing optimization.

Dependencies

To share Multiply-Add blocks in your design:

• In the Resource Sharing tab, make sure that the Multiply-Add blocks check box is selected.

• In the HDL Block Properties for the DUT Subsystem, specify the SharingFactor.

Settings

0 (default)

0, 1

No minimum bit width for shared Multiply-Add blocks.

N, where N is an integer greater than 1

When resource sharing and Multiply-Add block sharing are enabled, share Multiply-Add blocks with a bit width greater than or equal to N.

Tips

To set this property, use the functions hdlset_param or makehdl. To view the property value, use the function hdlget_param.

For example, you can use the MultiplierAddSharingMinimumBitwidth setting when you generate HDL code for the symmetric_fir subsystem inside the sfir_fixed model using either of these methods.

• Pass the property as an argument to the makehdl function.

  makehdl('sfir_fixed/symmetric_fir', ... 
          'MultiplierAddSharingMinimumBitwidth',16)

• When you use hdlset_param, you can set the parameter on the model and then generate HDL code using makehdl.

  hdlset_param('sfir_fixed',MultiplierAddSharingMinimumBitwidth',16)
  makehdl('sfir_fixed/symmetric_fir')

Recommended Settings

No recommendations.

Programmatic Use

Parameter: MultiplierAddSharingMinimumBitwidth

Type: integer

Value: integer greater than or equal to 0

Default: 0

Version History

Introduced in R2021a