PCM2702E datasheet by Texas Instruments

PCM2702E Frequently Asked Questions (FAQs)

• What is the recommended power-on sequence for the PCM2702E?
  The recommended power-on sequence is to apply VCC first, followed by VDD, and then the analog power supplies (VAA and VDA). This ensures that the internal voltage regulators are powered up correctly.
• How do I configure the PCM2702E for master clock mode?
  To configure the PCM2702E for master clock mode, set the MCKE pin high and the BCKE pin low. This enables the internal clock generator and allows the device to generate its own clock signals.
• What is the maximum allowed capacitance for the analog output filters?
  The maximum allowed capacitance for the analog output filters is 220nF. Exceeding this value may affect the stability of the output stage and cause oscillations.
• Can I use the PCM2702E with a separate analog power supply for the analog output stage?
  Yes, you can use a separate analog power supply for the analog output stage. This can help to reduce noise and improve the overall performance of the device. However, ensure that the power supply is well-regulated and has a low noise floor.
• How do I troubleshoot issues with the PCM2702E's digital interface?
  To troubleshoot issues with the digital interface, check the clock signals (MCLK, BCLK, and LRCK) for proper frequency and phase relationships. Also, verify that the data is being transmitted correctly and that the device is properly configured for the desired data format (e.g., I2S, DSP, or Right-Justified).