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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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STW5098 Fiches technique(PDF) 28 Page - STMicroelectronics |
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STW5098 Fiches technique(HTML) 28 Page - STMicroelectronics |
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28 / 86 page  STw5098 Functional description 27/85 4.18 Microphone biasing circuits The Microphone Biasing Circuits can drive mono or stereo microphones and can switch them off when not needed in order to save the current used by the microphone biasing network on each entity. Two bits control the behavior of the microphone bias circuit: MBIAS in CR17 enables the circuit (fixed voltage at MBIAS pin), while bit MBIASPD in CR17 affects the behavior of MBIAS pin when the function is not enabled. In particular when MBIASPD=1 the MBIAS pin is pulled down, otherwise it is left in tristate mode. The specification for the microphone biasing circuits can be found in Section 10.6 on page 64. |
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