Push-Button-Controlled Filter - Analog Devices AN-951 Application Note

AN-951

PUSH-BUTTON-CONTROLLED FILTER

This example uses the push-buttons as described in the
previous examples, although it now uses the index value to
select from one of four equalizer curves.
Figure 26. Push-Button-Controlled Filter Index Table
Figure 27. Push-Button-Controlled Filter Signal Flow
Figure 28. Push-Button-Controlled Filter Tone Control Window
Rev. A | Page 12 of 20
The cell names as they appear in the software and the number
of each used in this example are as follows: GPIO Input (2),
Interface Read (1), Up/Down Control w/Lookup Table (1),
Interface Write (1), Input (1), General (2nd Order/Lookup) (1),
and Output (2).
Application Note