Table of contents
About this document....................................................................................................................... 1
Stuck or in need of help? ................................................................................................................. 1
Safety precautions.......................................................................................................................... 1
Table of contents............................................................................................................................ 2
1Quick start ............................................................................................................................ 3
1.1 What’s included.......................................................................................................................................3
1.2 Hardware setup.......................................................................................................................................3
1.3 Software installation...............................................................................................................................4
1.4 Firmware flash for USB MCU...................................................................................................................4
1.5 Running the MERUS™ audio amplifier configurator ..............................................................................5
2The MERUS™ audio amplifier configurator ................................................................................ 7
2.1 Demo mode .............................................................................................................................................7
2.2 Normal mode...........................................................................................................................................7
2.3 MCU connected mode.............................................................................................................................8
3Using the software ................................................................................................................. 9
3.1 Initial screen ............................................................................................................................................9
3.2 Configuration window...........................................................................................................................12
3.2.1 Power stages page ...........................................................................................................................12
3.2.2 I2S/TDM page ....................................................................................................................................14
3.2.3 DSP page...........................................................................................................................................16
3.2.3.1 Example 1: EQ filter response plot .............................................................................................19
3.2.3.2 Example 2: Importing a custom speaker measurement and EQing..........................................20
3.2.4 Register browser page .....................................................................................................................23
3.2.5 Status page.......................................................................................................................................24
4DSP flows .............................................................................................................................25
4.1 DSP flow application examples ............................................................................................................26
4.1.1 5 W mono wireless speaker..............................................................................................................26
5DSP audio blocks...................................................................................................................29
5.1 Biquad block..........................................................................................................................................29
5.2 Volume control/limiter block................................................................................................................37
5.2.1 Limiter configuration .......................................................................................................................37
5.2.2 Limiter details...................................................................................................................................40
5.3 Multi-band DRC blocks..........................................................................................................................44
5.3.1 Two-band DRC configuration ..........................................................................................................44
5.3.2 Three-band DRC configuration........................................................................................................46
5.3.3 Multi-band DRC details ....................................................................................................................48
5.4 Delay block ............................................................................................................................................50
5.5 MIXMUX block ........................................................................................................................................52
6Saving and exporting configurations.......................................................................................54
6.1 Saving configurations ...........................................................................................................................54
6.2 Exporting configurations ......................................................................................................................56
6.2.1 Example MCU pseudo-code.............................................................................................................58
Revision history.............................................................................................................................59
Disclaimer.....................................................................................................................................60
