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MCLK from BCLK on TAS5706

Hanns
Expert 1005 points
Other Parts Discussed in Thread: TAS5706B, TAS5706, TAS5754M

Hi all!

Sorry if I'm double posting here but couldn't seem find a simple answer to this one while searching and a bit unsure about what the d/s really has to say in this subject.

In wonder, can the tas5706b recreate the master clock from the bit clock using internal PLL in order for me to use only but a simple 3-wire i2s protocol consisting of only data, lrck and bck?

Thank you!

  • 0
    TI__Guru**** 189399 points

    Hi, Hans,

    TAS5706 is NRND... Make sure you are using TAS5706B if you continue to use it.

    I believe it can for a very limited combination of clocks and sample rates. I will ask my colleague to confirm for you.

    However, our newer products (TAS5706 was originally designed more than eight years ago...) have much more flexibility and performance. Check out TAS5754M, I think you'll like it a lot!

    -d2

  • 0 in reply to Don Dapkus
    Expert 1005 points

    Hi Don!

    Thanks for looking into this for me and yes I'm using the TAS5706B - I seem to have grown attached to it :-)

    I will check out the TAS5754M which looks very interesting indeed.

  • 0
    TI__Guru 57800 points

    Hello Hans

    As Don says, TAS5706B has a limited combination of clocks and sampling rates.

    The only possible way to use a 3-way I2S protocol is with a sampling frequency above 88.2-kHz and MCLK/BCLK= 64-Fs.

    Below is a table with possible clock combinations for TAS5706B. 

    Regards,

    -Diego Meléndez López

  • 0 in reply to Diego Melendez
    Expert 1005 points

    Thank you for clarifying this!

    Hanns