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TLV320AIC3109-Q1: LEFT_LOP/M Power status

Karl Vaba
Prodigy 40 points
Part Number: TLV320AIC3109-Q1


Hello

I have a board set up with a host processor (STM32F413) and the TLV320AIC3109-Q1 codec. Communication between those deviecs over I2C works fine. I can read and write the registers.

I have trouble understanding how to power up the LEFT_LOP/M. I've looked through all the registers and i haven't seen a specific bit to power it up. Whenever I read LEFT_LOP/M power status (from register 86 or register 94) it always returns 0 - it is not powered up. 

Powering up the ADC and DAC works, because reading back their respective statuses returns 1. 

Is there any specific way i should go about to power up the LEFT_LOP/M?

Thanks

  • 0
    TI__Mastermind 30220 points
    Karl,

    This is a data sheet error. D0 is not a power status pin, it is a Power control pin and it is R/W. I am working on an datasheet updates for this entire family of devices to correct this, but unfortunately the update has been delayed.

    If you want to power up the LEFT and Right _LOP/M output, D0 must be '1'

    The power status for the LEFT and Right LOP/M outputs is on register 94.

    best regards,
    -Steve Wilson