User's Manual

4
Rev 1.12.4 Oct.09 Proprietary and Confidential 25
In the event of a discrepancy in values between this guide and the Product Specification Document (PSD), the PSD takes precedence.
4: Audio Interface
Note: Values in this guide are
taken from the appropriate
product specification documents
(PSDs) (listed in
Related
documents , page 11) — in the
case of a discrepancy between
this document and the relevant
PSD, use the value listed in the
PSD.
TheMC5725V/MC5727V/MC5728V/MC8775V/MC8790V/
MC8791V/MC8792V/MC8795Vmodulessupportsixaudio
modesthatmayberequiredbyahostaudiosystem:
• Handset
• Headset
• Carkit
• Speakerphone
• AUX(MC5727V/MC5728Vmodulesarepreconfiguredfor
HAC[HearingAidCompatibility])
• TTY
Themodulessupportbothadifferentialanaloginterfaceand
PCMdigitalaudio,andallowdynamicrun‐timeselectionof
theappropriatemode.
Table4‐1summarizesthekeyaudiofeaturesofthesemodules.
Table 4-1: Audio features
Feature Transmit Receive
Gain (adjustable)
MC5725V:
• Up to +16 dB analog gain.
MC5727V:
• MIC_AMP1: Programmable to 0 dB or +24 dB.
• MIC_AMP2: Programmable from -6 dB to
+25.5 dB in steps of 1.5 dB.
MC5728V:
• Programmable to 0 dB or +24 dB.
MC8775V / MC8790V / MC8791V / MC8792V /
MC8795V:
• Up to +48.5 dB analog gain available (when the
analog interface is selected).
Up to +12 dB
Filtering stages
Several adjustable high-pass and slope filters High-pass filter
Noise suppression
Supported n/a
Echo cancellation
Configurable for each audio mode (headset,
handset, speakerphone, and car kit)
n/a
Output driver stage
n/a Supported