ES1868F - ESS Technology

ES1868F Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the ES1868F?
  The recommended power-up sequence is to power up the analog power supply (AVDD) first, followed by the digital power supply (DVDD). This ensures that the analog circuitry is stable before the digital logic is enabled.
• How do I configure the ES1868F for stereo audio output?
  To configure the ES1868F for stereo audio output, set the STEREO pin high and the MONO pin low. Additionally, configure the I2S interface to transmit stereo audio data by setting the I2S_WS pin to toggle between left and right channels.
• What is the maximum clock frequency supported by the ES1868F?
  The ES1868F supports a maximum clock frequency of 50 MHz for the I2S interface and 24.576 MHz for the system clock.
• How do I implement muting and unmuting of the audio output?
  To mute the audio output, set the MUTE pin high. To unmute, set the MUTE pin low. Note that muting only affects the analog audio output and does not affect the digital audio data transmission.
• What is the recommended layout and routing for the ES1868F's analog and digital signals?
  To minimize noise and interference, it is recommended to separate the analog and digital signal traces on the PCB, and to use a ground plane to shield the analog signals. Additionally, keep the analog power supply (AVDD) and digital power supply (DVDD) separate and use decoupling capacitors to filter out noise.