Digital Voice Interface Application Note r0

LE866 DIGITAL VOICE INTERFACE APPLICATION NOTE 80471NT11521A Rev.0 • 2017-01-16 15 of 22
Reproduction forbidden without Telit Communications S.p.A. written authorization – All Rights Reserved
6 DVI SETTING EXAMPLES
The next chapters show examples concerning the audio formats supported by the DVI audio bus in
Master and Slave configurations. All the following setting examples are performed using the hardware
configuration shown in fig. 3. I2C bus is used to configure the MAX9867 Codec: the user by means of
AT commands can control the codec. The DVI bus provides the voice connection between the two
devices.
fig. 3: Telit Module/Codec Connections
The setting examples are organized as shown in the figure below.
fig. 4: DVI Configurations
NOTE:
The examples use the MAX9867 Codec, see chapter 6.2 for a schematic
reference design. In general, the user can use any codec compliant with the
technical requirements of the used module.
Normal Mode
Burst Mode
Audio Format Mode
Module Master
Module Slave
Module Master
Module Slave