BGS3 Hardware Interface Description
5.7 Electrical Characteristics of the Voiceband Part
90
BGS3_HD_v01.000d
Page 87 of 109
2010-03-26
Confidential / Released
gs = gain setting
Frequency Response
5
0Hz - 100Hz
200Hz
300Hz - 3350Hz
3400Hz
4000Hz
>4400Hz
-0.2
-1.1
-0.7
-39
-34
0.1
-75
dB
1. That means the differential voltage at EPP1/EPN1 for a sine wave must not exceed 3.8 Vpp at 8 Ohm.
At 16 Ohm it can be 6 Vpp.
2. Full scale of EPP2/EPN2 is lower than full scale of EPP1/EPN1 but the default gain is the same.
3.14dBm0 will lead to clipping if the default gain is used.
3. The idle channel noise was measured with digital zero signal fed to decoder. This can be realized by
setting outCalibrate and sideTone to 0 during a call.
4. The test signal is a 1 kHz, 0 dbm0 sine wave.
5. This is the frequency response from a highpass and lowpass filter combination in the DAC of the base-
band chip set. If the PCM interface is used, this filter is not involved in the audio path. Audio mode 1 to
4 incorporate additional frequency response correction filters in the digital signal processing unit and are
adjusted to their dedicated audio devices (see
Table 33:
Voiceband receive path
Parameter
Min
Typ
Max
Unit
Test condition / remark
