User Manual
17
V 1.1
2022-09-12
User manual for MERUS™ audio amplifier configurato
r
MA2304DNS/MA2304PNS
Using the software
OPEN, SAVE and APPLY buttons
A DSP flow can be saved and loaded through these controls. To program a DSP flow onto the device, press
APPLY and wait until the warning symbol is gone. In some cases, it will be necessary to press twice. In earlier
software versions it is necessary to mute the device before clicking APPLY. Otherwise, it may result in a loud
popping sound and can potentially damage the speaker.
WARNING!
Figure 21
Warning
In other words, if the APPLY button is red, make sure to MUTE first before clicking.
DSP flow diagram
The DSP flow is a block diagram of interconnected audio blocks that can be programmed into the MA2304DNS
DSP. This screenshot shows the audio data flowing from the host (applications processor, MCU, etc.) into the
digital audio interface of the MA2304xNS, through the DSP and its audio blocks, to the power amplifier and to
the speaker(s).
If the TX_ENABLE control in the I
2
S/TDM page
is set to “enable” two additional outputs will be shown, labeled
“Active Speaker_x”. This will route the DSP output(s) to the I2S_DO pin for connection to external audio
interfaces. This can be useful for multichannel applications or to send the output back to the host for echo
canceling, as an example.
Detailed information on available DSP flows and its audio blocks is provided in depth in the DSP flows and DSP
audio blocks chapters.
