EGS5 Hardware Interface Description
3.15 Audio Interfaces
75
EGS5_HD_v02.004
Page 65 of 123
2012-02-09
Confidential / Released
3.15.3
Loudspeaker Circuit
The GSM module comprises two analog differential speaker outputs: EP1 and EP2. Output
EP1 is able to drive a load of 8Ohms while the output EP2 can drive a load of 32Ohms. Inter-
face EP2 can also be connected in single ended configuration.
shows an example of
a differential loudspeaker configuration.
Figure 27:
Differential loudspeaker configuration
Loudspeaker impedance
EPP1/EPN1
Z
L
= typ. 8
EPP2/EPN2
Z
L
= typ. 32