The DMIC clock (output from SoC to microphones) must be stable. The ACP typically divides a master clock (e.g., 192 MHz) down to generate the required PDM clock (2.4 MHz ± 2%). : The clock must be present before the DMIC node starts capturing data.
Allows the system to keep microphones active for "wake-on-voice" features without draining the battery. acp dmic node
In the rapidly evolving world of embedded systems, mobile devices, and automotive infotainment, audio processing has become a cornerstone of user experience. From voice assistants like Alexa and Google Assistant to noise cancellation for conference calls, the demand for high-quality, low-latency digital audio input is higher than ever. The DMIC clock (output from SoC to microphones)