The recommended power-up sequence is to apply VDD first, followed by VDDIO, and then the clock signal. This ensures proper device initialization and prevents latch-up.
To optimize analog performance, ensure that the analog and digital grounds are separated, use a low-ESR capacitor for decoupling, and keep the analog signal paths as short as possible. Additionally, use a high-quality, low-jitter clock source.
The maximum allowed capacitance on the analog input pins is 10nF. Exceeding this value may affect the device's analog performance and stability.
Yes, the CS43L21 can be used with separate analog and digital power supplies. However, ensure that the analog power supply is clean and well-regulated to prevent noise coupling into the analog circuitry.
To troubleshoot digital interface issues, verify that the clock signal is stable and within the specified frequency range. Check the digital output voltage levels and ensure they are within the specified range. Also, verify that the digital interface is properly terminated and that the signal lines are not overloaded.
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