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3. TECHNICAL BRIEF
3.11.2 Digital Part
Figure.3.11. Shows block diagram of digital circuits in an audio front-end . The APB register block is an APB peripheral
storing from the MCU. The DSP audio port ( DAP ) Block interfaces with DSP for control and data communication. The
digital filter block performs filter operation for voice band and audio band signal processing. The Digital Audio interface (
DAI) block communicates with the system simulator for FTA or external Bluetooth
Figure.3.11.2 Digital circuits in Audio Front-End
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