The recommended power-up sequence is to apply VDD first, followed by VDDA, and then VDDL. This ensures that the internal voltage regulators are powered up in the correct order.
To optimize for low power consumption, set the device to the lowest possible clock frequency, disable unused features, and use the power-saving modes (e.g., idle mode, shutdown mode). Additionally, optimize the external component selection and PCB design to minimize power consumption.
The maximum allowed capacitance for the VDD, VDDA, and VDDL power pins is 10uF. Exceeding this value may cause power-up issues or affect the device's performance.
To troubleshoot I2S interface issues, check the clock frequency, data format, and slave/master mode settings. Verify that the I2S pins are properly connected and that the clock signal is stable. Use a logic analyzer or oscilloscope to inspect the I2S signals and identify any errors or misconfigurations.
Keep analog and digital signals separate, and use separate power planes and ground planes for analog and digital circuits. Use a star topology for the power supply connections, and avoid routing digital signals near analog signals. Follow the recommended PCB layout guidelines in the datasheet and application notes.
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