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SRC4392: Multiple SRC4392 DIT Output Sync

Dan Cartman
Prodigy 60 points
Part Number: SRC4392

We are designing a board using 4 x SRC4392, all as both DIR and DIT. We would like to make sure the DIT outputs of all 4 devices are synchronised (the source data will have the same MCLK, BCLK, LRCLK).

From the datasheet it looks like the way to do this is to set the first SRC4392 device to output on the BLS pin, then connect that to the other 3 SRC4392 devices with BLS set to an input.

Is this correct? And if so, am I also correct that the SYNC output pin isn't needed for this? (in which case I'm not sure I understand why that's there)

  • 0
    TI__Mastermind 26691 points

    Hi Dan, your understanding is correct. I  have seen daisy chain use of 4 devices, but not  used them in parallel.  I believe your description of set up is correct

    For that i don't see any need for sync (output Pin) as well.

    Regards,

    Arash