User's Manual

SC14CVMDECT SF Cordless Voice Module
© 2012 Dialog Semiconductor B.V. 19 July 1, 2014 v1.6
4.5 PP AUDIO MODES
The PP audio handling consists of four audio states
(see Figure 14). In these states the audio subsystem is
configured for a certain audio mode:
1. Idle mode (not relevant for microphone configu-
ration)
2. Earpiece mode (Handset speaker)
3. Handsfree or Speakerphone mode
4. Headset mode
Selection between the modes is done via API calls; see
document reference [2].
The Alert state is for tone playing and is entered auto-
matically when tones are played using the API calls.
The Alert state can originate from idle, earpiece,
handsfree or headset mode.
4.5.1 Power management
To minimize the current consumption the PP will shut
down all codec amplifiers in Idle mode. This means
that all reference voltages in the analog front-end will
be disabled. This feature can be disabled in the VES if
the reference voltages for some reasons are needed in
Idle mode.
Figure 13 Handset volume configuration
Figure 14 PP audio modes
Idle
Earpiece
Audio
Handsfree
Audio
API_PP_ AUDIO_SET_ MODE_ REQ
(API_ AUDIO_ MODE_ EARPIECE
)
API_PP_ AUDIO_SET_ MODE_ REQ
(API_ AUDIO_ MODE_ EARPIECE
)
API_PP_ AUDIO_SET_ MODE_ REQ
(API_ AUDIO_ MODE_ HANDSFREE
)
Headset Audio
API_PP_ AUDIO_SET_ MODE_ REQ
(API_ AUDIO_ MODE_ HEADSET
)
API_PP_ AUDIO_ SET_ MODE_ REQ
(API_ AUDIO_ MODE_ EARPIECE
)
API_PP_ AUDIO_SET_ MODE_REQ
(API_ AUDIO_ MODE_ HEADSET
)
API_PP_ AUDIO_ SET_ MODE_ REQ
(API_ AUDIO_ MODE_ EARPIECE
)