DocID028356 Rev 1

5/16

STA1074, STA1078, STA1079, STA1088

System description

16

An application case which includes the connection of a 3G/4G Modem and of an optional BT

is represented in the following Figure 2.

Figure 2. Example of sound use case

2.5

Audio interfaces

A complete set of audio interfaces is provided, in order to simplify integration with speakers,

and input sources. Each interface can be routed to the sound subsystem. A complete list of

audio interfaces is provided below:



Audio ADC

–

For AUX IN Line

–

ADC Input is single ended 3.3 V



Voice ADC

–

Shared among Voice and TEL-IN lines with embedded multiplexer

–

Both Mic and TEL-IN are differential inputs



Stereo DAC



Multiple I2S IN



Multiple I2S OUT