User Manual

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mikromedia 4 for STM32 CAPACITIVE U S E R M A N U A L
P A G E 25
mikromedia 4
for STM32 CAPACITIVE
U S E R M A N U A L
6.2 Audio CODEC
6.3 Audio connectors
Resource-demanding and complex audio processing tasks can be
offloaded from the host MCU by utilizing a dedicated audio CODEC IC,
labeled as VS1053B (1). This IC supports many different audio formats,
commonly found on various digital audio devices. It can encode and
The mikromedia 4 board is equipped with the 3.5mm four-pole headphones
jack (3), allowing to connect a headset with a microphone. Two line-level
audio outputs are also available over the 1x26 pin header (4).
The microphone input from the 3.5mm four-pole headset jack is
multiplexed with two line-level audio inputs. By using an SMD jumper (5)
located near the headphone jack, it is possible to select which audio input
will be used by the VS1053B. The choices are:
LIN: two line-level inputs form the 1x26 pin header
MIC: electret microphone, connected over the 3.5mm headphone jack
decode audio streams independently while performing DSP-related tasks
in parallel. The VS1053B has several key features that make this IC very
popular choice when it comes to audio processing.
By offering high-quality hardware compression (encoding), the VS1053B
allows the audio to be recorded taking up much less space compared to
the same audio information in its raw format. In combination with high-
quality ADCs and DACs, headphones driver, integrated audio equalizer,
volume control, and more, it represents an all-around solution for any
type of audio application. Along with the powerful graphics processor, the
VS1053B audio processor completely rounds-up the multimedia aspects
of the mikromedia 4 development board.
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mikromedia 4 for STM32 CAPACITIVE U S E R M A N U A L