External Amplified Stereo Output Configuration; Lineout Output Configuration; Microphone Record-Replay Mode; Figure 7. External Mono Speaker Or Headphone System Setup - ST STM32 User Manual

UM0722
Figure 7.
7.1.3

External amplified stereo output configuration

To change the audio output from the default onboard speaker to the TS2012 power output,
briefly press the B1 button on the controller board. In this mode the red LD1 and the green
LD2 are both on. By pressing again the B1 button you can get back to the default onboard
speaker mode. Please read
speaker configuration and limitations of the demonstration kit.
Figure 8.
7.1.4

Lineout output configuration

Whatever the firmware application mode, the user can always use lineout RCA stereo
interface to obtain standardized audio signal that can be further processed by an external
audio equipment.
Figure 9.
7.2

Microphone record-replay mode

The onboard microphone can be used only in record-replay mode. To change the operating
mode from PC USB demonstration kit to record-replay mode, press B1 for approximately 1 s.
www.BDTIC.com/ST
External mono speaker or headphone system setup
Section 9.8
External amplified stereo output system setup
Lineout output system setup
Doc ID 15867 Rev 1
for further information about the best external
System setup
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