Specifications

AC65/AC75 Hardware Interface Description
5.7 Electrical Characteristics of the Voiceband Part
s
AC65_AC75_HD_v01.002 Page 96 of 117 2006-10-30
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Frequency response
1
0Hz - 100Hz
200Hz
300Hz - 3350Hz
3400Hz
4000Hz
≥4400Hz
-0.2
-1.1
-0.7
-39
-34
0.1
-75
dB
1.
This is the frequency response from a highpass and lowpass filter combination in the DAC of the baseband
chip set. If the PCM interface is used, this filter is not involved in the audio path. Audio mode 1 to 4 incor-
porate additional frequency response correction filters in the digital signal processing unit and are adjusted
to their dedicated audio devices (see Table 31).
Table 33: Voiceband transmit path
Parameter Min Typ Max Unit Test condition / Remark