User guide

16 Altera Corporation
Stratix II Professional Filtering Lab
Review the FIR_3MHz MegaCore Function Instance
To review the parameters for the FIR_3MHz MegaCore function, follow
these steps:
1. Double-click the FIR_3MHz block (see Figure 4 on page 6) to launch
IP Toolbench for the FIR Compiler MegaCore function, as shown in
Figure 10.
Figure 10. IP Toolbench for FIR Compiler MegaCore Function v3.2.1
2. Click Step 1: Parameterize to review the parameters for the
FIR_3MHz block (see Figure 12 on page 19). The FIR_3MHz block
is a 35-tap, low-pass filter with a cut-off frequency of 3 MHz. It is
designed to filter out the 10-MHz sinusoidal signal.
For the FIR_3MHz block, you must first review the characteristics of
the filter in the Edit Coefficient Set tab. Click Edit Coefficient Set
(see Figure 12 on page 19). This opens the FIR filter parameters in the
Coefficients Generator Dialog dialog box (see Figure 11).