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3. TECHNICAL BRIEF
3.6.4 Audio Section
1. Receive audio signal from microphone. This model uses differential configuration.
2. Send audio signal to speaker. This model uses differential configuration.
3. This section provides an audio codec with a digital-to-analog converter and an analogto-digital
converter, a ring tone volume controller, a microphone interface, and multiple analog input and
output channels.
4. It interconnects with external devices like main microphone, main receiver, and headset.
The descriptions of audio port used in This model are given bellow in detail.
<Up Link>
- AIN1P,AIN1N : Main microphone positive/negative terminal
- AIN2P,AIN2N : Headset microphone positive/negative terminal
- AIN3P,AIN3N : External Analog Input terminal
<Down Link>
- AOUT1P,AOUT1N : Main Speaker positive/negative terminal
- AOUT3P : Headset speaker terminal
Figure 3-15. AD6537B AUDIO SECTION
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