CS42426-CQZ datasheet by Cirrus Logic

CS42426-CQZ Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the CS42426-CQZ?
  The recommended power-up sequence is to apply VCC first, followed by VDD, and then the clock signal. This ensures proper initialization of the device.
• How do I configure the CS42426-CQZ for master clock mode?
  To configure the CS42426-CQZ for master clock mode, set the MCLK pin as an output by setting the MCLKOE bit in the Clock Control Register (0x04). Then, set the desired clock frequency using the MCLKDIV register (0x05).
• What is the maximum allowed capacitance on the analog input pins?
  The maximum allowed capacitance on the analog input pins is 10nF. Exceeding this value may affect the device's performance and stability.
• How do I optimize the CS42426-CQZ for low power consumption?
  To optimize the CS42426-CQZ for low power consumption, set the Power Management Register (0x03) to enable the low-power mode. Additionally, reduce the clock frequency, disable unused features, and use the internal voltage regulator (if available).
• What is the recommended layout and routing for the CS42426-CQZ?
  The recommended layout and routing for the CS42426-CQZ involves keeping the analog and digital signals separate, using a solid ground plane, and minimizing the length of the clock signal traces. Refer to the Cirrus Logic application note AN215 for more detailed guidelines.