• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 30 subscribers
  • Views 849 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

PCM1794: Question about digital inputs and jitter

leonid zyablow
Prodigy 10 points
Part Number: PCM1794

PCM1794 has mclk input and 3 I2S inputs include bclk. I believe that the clock is used as base clock for modulators is bclk, so bclk is jitter critical clock, not mclk. Am I right?

  • 0
    TI__Guru 57800 points

    Hi, Leonid,

    Welcome to E2E, Thanks for your interest in our products!.

    The PCM1794A requires a system clock (SCK or MCLK) for the operation of the interpolation filters and DAC modulators. In this device, BCLK is used for the audio serial interface purposes only. It is recommended for the system clock to have low-phase jitter and noise for the better performance.

    Best Regards,

      -Diego Meléndez López
       Audio Applications Engineer