Filter Configuration Options

Single rate, multirate, cascaded, other advanced digital filters

Filter Design HDL Coder™ supports HDL code generation from many types of filters, including those with programmable coefficients, complex input signals, and multiple rates. You can generate HDL code from a filter you designed using a System object™ or a dfilt object.

Properties

HDL Filter Configuration Properties

Configure coefficients, complex input ports, and optional ports for specific filter types

Topics

Programmable Filter Coefficients for FIR Filters
Generate HDL code for a FIR filter with programmable coefficients.
Programmable Filter Coefficients for IIR Filters
Generate HDL code for a IIR filter with programmable coefficients.
Cascade Filters
Types of cascade filters supported for HDL code generation, and how to specify options for cascade filter code generation.
Multirate Filters
Multirate filter support and clock options.
Polyphase Sample Rate Converters
How to specify code generation and test bench options for polyphase sample rate converters (dsp.FIRRateConverter).
Multirate Farrow Sample Rate Converters
How to specify code generation and test bench options for multirate Farrow sample rate converters (dsp.FarrowRateConverter).
Single-Rate Farrow Filters
How to specify code generation and test bench options for Farrow (fractional delay) filters.
Variable Rate CIC Filters
Types of variable rate filters supported for HDL code generation, and how to generate a rate port to load in a rate factor.
DUC and DDC System Objects
Generate HDL code for Digital Up Converter (DUC) and Digital Down Converter (DDC).

Featured Examples

HDL Programmable FIR Filter

Illustrates how to generate HDL code for an FIR filter with a processor interface for loading coefficients. The filter can be programmed to any desired response by loading the coefficients into an internal coefficient memory using the processor interface.

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