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TLV320AIC3100: TLV320AIC3100 slave address fixed or variable?

Leo Chow
Expert 3120 points
Part Number: TLV320AIC3100
Other Parts Discussed in Thread: TLV320AIC3106

Hi,

I just need a quick verification on whether can we change the slave address for TLV320AIC3100 when it's operating as slave with a DSP unit serving as master device? Is the corresponding slave address fixed? Thanks.

Regards,

Leo 

  • 0
    TI__Mastermind 30220 points
    Leo,

    Yes, the I2C address is fixed on the AIC3100. This is described in the datasheet in the device overview (section 7.1) and I2C Control mode (section 7.3.13.3.1)

    best regards,
    -Steve Wilson
  • 0 in reply to Steve-Wilson
    TI__Expert 3120 points
    Hi Steve,
    does this applies to other codecs such as AIC34 & AIC3204?

    Regards,
    Leo
  • 0 in reply to Leo Chow
    TI__Mastermind 30220 points
    Leo,

    The fixed slave address is not universal to all TI Codecs. Often what happens is an full featured device is released, and then an optimized, reduced feature/smaller package device is released. For example, the TLV320AIC3106 is a codec with 10 audio inputs, multiple GPIOs, SPI/I2C support, as well as hardware pins for I2C address, but it comes in a 48pin 7x7mm QFN package, The AIC3104 reuses most of the same internal blocks, but is optimized for space. So it has 6 audio inputs, no GPIO, supports only I2C with a fixed address, but comes in a 5x5mm QFN package.

    The Datasheets have this information.

    best regards,
    -Steve Wilson