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Original question:

SRC4392: SRC4392: How does the interrupt mode: "level active" function?

SRC4392: AES RXAMLL

Ben Alexander
Prodigy 20 points
Part Number: SRC4392

Tool/software:

Hi,

We are using an  SRC4392 and trying to set the RXAMLL (Receiver Automatic Mute for Loss of Lock) bit to get the device to mute when there is a loss of lock.

However, when soing this we recieve a periodic thumping. Does anyone have any idea of why this may be? I can provide audio/digital bits if needed.

Thanks,

Ben

  • 0
    TI__Mastermind 21120 points

    Hello Ben,

    Sounds like you lose the lock periodically for a very short  period of time and thus  it triggers the mute momentarily . By itself the mute provides a pop-less  muting by forcing the SRC output data low by stepping the output attenuation from the current setting to an all-zero data output state, however if muting starts but immediately stops,  it might not be pop free.

    Are you monitoring the LOCK function ? I was wondering if you  provide a different settings for input /outputs clk,  does this issue  get worse or better? That is , are you working in Slave or Master mode and can you try with a different setting?

    Regards

    Arash