Digital Voice Interface Application Note r0

LE866 DIGITAL VOICE INTERFACE APPLICATION NOTE 80471NT11521A Rev.0 • 2017-01-16 6 of 22
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1 INTRODUCTION
Scope
The present document provides the reader with a guideline concerning the setting and use of the Digital
Voice Interface developed on the Telit’s LE866 modules shown in the Applicability Table.
This Application Note covers the configurations of the Digital Voice Interface, e.g.: the selections of the
voice sampling frequency, the bit number of the voice sample, the audio formats, etc. In addition, the
document shows some configurations of a popular Audio Codec connected to the module. These
activities are accomplished via I2S and I2C buses; the hardware characteristics of the two buses are
beyond the scope of the document.
Audience
The document is intended for those users that need to develop applications dealing with signal voice in
digital format.
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