Adder sharing minimum bitwidth - Specify the minimum bit width that is required to share adders with the resource sharing optimization - MATLAB (original) (raw)

Main Content

Specify the minimum bit width that is required to share adders with the resource sharing optimization

Model Configuration Pane: Optimization / Resource sharing

Description

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

Dependencies

To share adders in your design:

• In the Resource Sharing tab, enable the Adders setting.
• In the HDL Block Properties for the DUT Subsystem, specify the SharingFactor.

Settings

0 (default)

0, 1

No minimum bit width for shared adders.

N, where N is an integer greater than 1

When resource sharing and adder sharing are enabled, share adders 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 AdderSharingMinimumBitwidth 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', ...
  'AdderSharingMinimumBitwidth',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','AdderSharingMinimumBitwidth',16)
  makehdl('sfir_fixed/symmetric_fir')

Recommended Settings

No recommendations.

Programmatic Use

Version History

Introduced in R2015a