Digital microphone interface supporting multiple microphones
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United States of America Patent
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Sep 5, 2017
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N/A
app pub date -
May 16, 2016
filing date -
Jun 7, 2013
priority date (Note) -
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Abstract
Extending a microphone interface. One microphone interface extension includes a controller, a parent microphone, and a child microphone. The controller outputs a controller clock signal. The parent microphone receives the controller clock signal and generates a first data signal. The child microphone generates a second data signal and outputs the second data signal to the first parent microphone. The parent microphone receives the second data signal from the child microphone and outputs a combined data signal to the controller based on the first data signal and the second data signal. The parent microphone outputs the combined data signal to the controller on a phase of a microphone clock signal derived from the controller clock signal.
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