Jianjun Wang
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Recent activity by Jianjun Wang-
How to Set up the PDM to Achieve 48/16/44.1 KHz Audio Data
Audio codecs are typically run at “audio-friendly” clock frequencies such as 6.144, 12.288, 24.576, and 49.152 MHz. However, the Apollo MCUs' are typically run at 48 MHz clock, which is not audio f...
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EM9304 interrupt pin
On the Apollo2 Blue MCU, the EM9304 interrupt pin (gpio46) is normally an input, and will not draw any current. But if the EM9304 is powered off, the BLE controller's interrupt pin runs in an unkno...