CS42L92-CWZR - Cirrus Logic

CS42L92-CWZR Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the CS42L92?
  The recommended power-up sequence is to power up the analog supply (AVDD) first, followed by the digital supply (DVDD), and then the clock signal. This ensures proper initialization of the device.
• How do I configure the CS42L92 for master clock mode?
  To configure the CS42L92 for master clock mode, set the MCLK pin to the desired clock frequency and set the MCLKDIV pin to the appropriate division ratio. Additionally, set the BCK pin to the desired bit clock frequency and the LRCK pin to the desired left-right clock frequency.
• What is the maximum input voltage for the analog-to-digital converter (ADC) inputs?
  The maximum input voltage for the ADC inputs is 2.5V, which is the same as the analog supply voltage (AVDD). Exceeding this voltage may result in incorrect conversion results or damage to the device.
• How do I optimize the CS42L92 for low power consumption?
  To optimize the CS42L92 for low power consumption, use the power-down modes (PD0-PD3) to shut down unused blocks, reduce the clock frequency, and use the dynamic power scaling feature. Additionally, use the lowest possible supply voltage and optimize the analog input signal levels.
• What is the recommended layout and routing for the CS42L92?
  The recommended layout and routing for the CS42L92 involves separating the analog and digital signals, using a solid ground plane, and minimizing the length of the clock signal traces. Additionally, use a low-impedance path for the analog supply voltage (AVDD) and decouple the power supplies with capacitors.