User guide

System Generator for DSP User Guide www.xilinx.com 109

UG640 (v 12.2) July 23, 2010

Using FDATool in Digital Filter Applications

The following example demonstrates one way of specifying, implementing, and

simulating a FIR filter using the FDATool block. The FDATool block is used to define the

filter order and coefficients and the Xilinx Blocksets are used to implement a MAC-based

FIR filter using a single MAC (Multiply-ACcumulate) engine. The quality of frequency

response is then validated by comparing it to a double-precision Simulink filter model.

Although a single MAC engine FIR filter is used for this example, we strongly recommend

that you look at the DSP Reference Library provided as a part of the Xilinx Reference

Blockset. The DSP Reference Library consists of multi-MAC, as well as, multi-channel

implementation examples with variations on the type of memory used.