Use a 10uF capacitor in parallel with a 100nF capacitor, placed as close as possible to the power pins, to ensure proper power supply decoupling.
Set the MCLK pin to the desired clock frequency, and configure the MCLKDIV pin to select the clock divider ratio. Refer to the datasheet for specific settings.
Keep analog and digital grounds separate, and connect them at a single point, preferably near the power supply. Use a solid ground plane for the digital ground and a separate, isolated ground plane for the analog ground.
Use a low-pass filter with a cutoff frequency above 100 kHz to filter out high-frequency noise. Also, ensure the output stage is properly terminated with a 10kΩ resistor to prevent oscillations.
Use a logic analyzer or oscilloscope to monitor the I²S signals (BCLK, LRCLK, and SDIN/SDOUT). Verify the clock frequencies, data alignment, and signal integrity to identify any issues.
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