Distributed pipelining

Enable pipeline register distribution

Model Configuration Pane: Optimization / Pipelining

Description

Enable pipeline register distribution, which is a speed optimization that increases the clock speed by moving existing delays in a design to reduce the critical path. This optimization moves the delays within a subsystem while preserving the hierarchy. For more information, see Distributed Pipelining.

Dependencies

Your design must contain delays that can be redistributed. You can insert delays manually or by using the HDL block properties InputPipeline or OutputPipeline on a subsystem or block.

Settings

Off (default) | On

On

Distribute pipelines in your design. To distribute pipelines, you must have pipelines already specified in your design.

Off

Do not distribute pipelines in your design.

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 DistributedPipelining 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', ... 
          'DistributedPipelining','on')

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

  hdlset_param('sfir_fixed','DistributedPipelining','on')
  makehdl('sfir_fixed/symmetric_fir')

Recommended Settings

No recommendations.

Programmatic Use

Parameter: DistributedPipelining

Type: character vector

Value: 'on' | 'off'

Default: 'off'

Version History

Introduced in R2012a