Sony Ericsson GR64 Manuel D’Utilisation
LZT 123 1834
51
There five factory-set audio profiles as follows:
•
Portable hands free
Low-level is recommended.
Low-level is recommended.
•
Handset
Low-level is recommended.
Low-level is recommended.
•
Car kit
Low-level is recommended.
Low-level is recommended.
•
Speakerphone
High-level is recommended.
High-level is recommended.
•
Headset
Low-level or High-level can be used with headset, depending on requirements.
Low-level or High-level can be used with headset, depending on requirements.
Portable hands free is the factory-set default profile. The modification, configuration,
manipulation and storage of audio profiles is achieved with the AT*E2EAMS (Audio
Profile Modification) and AT*E2APR (Audio Profile).
manipulation and storage of audio profiles is achieved with the AT*E2EAMS (Audio
Profile Modification) and AT*E2APR (Audio Profile).
5.9.1 Auxiliary Audio to Mobile Station (AUXI)
AUXI is a single-ended auxiliary analogue audio input to the wireless modem.
Internally, the signal is routed to the CODEC (COder/DECoder), where it is converted
to digital audio and mapped to an internal bus.
Internally, the signal is routed to the CODEC (COder/DECoder), where it is converted
to digital audio and mapped to an internal bus.
AUXI provides a DC bias when it is used as the microphone input in Portable Hands-
free applications. All other sources must be AC-coupled to avoid attenuation of low
frequencies, and to prevent incorrect biasing or damage to the AUXI input. Use a
capacitor greater than the value shown in the table below.
free applications. All other sources must be AC-coupled to avoid attenuation of low
frequencies, and to prevent incorrect biasing or damage to the AUXI input. Use a
capacitor greater than the value shown in the table below.
The AUXI input is a passive network followed by the transmit part of the CODEC.
Parameter
Conditions
Min
Typ
Max
Unit
max
input
gain 142 158 178 mVrms
Input voltage full scale
min input gain
447
501
564
mVrms
Frequency response
-3dB cut-off
300
3400
Hz
Output dc bias level
2.16
2.4
2.64
V
AC coupling capacitance
1
µ
F