Supported Filter System Objects

Filter Design HDL Coder™ supports these System objects from DSP System Toolbox™.

Single Rate Filters

• dsp.FIRFilter

• dsp.HighpassFilter

• dsp.LowpassFilter

• dsp.FilterCascade

• dsp.VariableFractionalDelay

Multirate Filters

• dsp.FIRDecimator

• dsp.FIRInterpolator

• dsp.FIRRateConverter

• dsp.FarrowRateConverter

• dsp.CICDecimator

• dsp.CICInterpolator

• dsp.CICCompensationDecimator

• dsp.CICCompensationInterpolator

• dsp.FilterCascade

• dsp.DigitalDownConverter (supports the generatehdl function, but does not support fdhdltool and the Generate HDL dialog window)

• dsp.DigitalUpConverter (supports the generatehdl function, but does not support fdhdltool and the Generate HDL dialog window)

You can also model hardware behavior and generate HDL code by using the DSP HDL IP Designer (DSP HDL Toolbox) app, or DSP HDL Toolbox™ System objects or blocks. The app, objects, and blocks provide algorithms with hardware-friendly control signals and architecture options. To generate HDL code from these algorithms, you must also have the HDL Coder™ product. See HDL-Optimized Filters and Transforms (DSP HDL Toolbox). For an example that uses the dsphdl.BiquadFilter (DSP HDL Toolbox) object and generates code using HDL Coder tools, see Generate HDL Code for IIR Filter (DSP HDL Toolbox).