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TLV320AIC3268

Other Parts Discussed in Thread: TLV320AIC3268

Hey,

i have been trying to get the AIC3268 codec to get up running, but does not seem to get it quite right.

I’ve made a breakout and supplied the chip with power and clock.

Can’t get contact through I2C.

I’ve been using the PurePath Console Motherboard with PurePath console and PurePath Studio GDE.

I have also tried to get contact directly from a mcu, but does only get NAK’s.

The clock I am using is a 25MHz square wave from a signal generator (have also tried different crystals)

 

The 1.8v bus is drawing approximately 50mA

The 3.3v bus does not currently appear to draw any current.

 

Is it something I am missing? What should I do?

 


 

Thanks,

 

Eskil

 

 

 

 

  • HI Eskil,

    50mA seems quite high.

    1. A clock is not required to be able to talk to the device via I2C.
    2. The I2C master voltage level must match the IOVDD1_33 levels of the TLV320AIC3268. So if the pull-up resistors of the I2C lines from the master are connected to 3.3V, then IOVDD1_33 must be 3.3V.
    3. Power must be provided to all supplies.
    - 1.8V for pins 9, 19, 30, 38, 40, 46, 49, 55, 61
    - 3.3V for pins 2, 10, 32, 36
    - 5V (or 3.3V is also ok) for pins 51, 53, 62.
    4. All GND pins must be connected to GND (pins 56, 57 and *THERMAL PAD*).
    5. Pin 7 must be set for the desired I2C address.
    6. Pin 11 (/RESET) must be set to IOVDD1_33 level for normal operation.

    The rest of the pins can be floating for verifying I2C communication.

    BTW, nice work with the breakout board!

    If possible, the best way to evaluate the device is using the TLV320AIC3268EVM-U.

    Hope this helps!

    Regards,
    J-
  • Hi, J,

    I found TLV320AIC3268 don't have many documentations like Application reference guide.

    I don't have TLV320AIC3268EVM-U.

    How can i use PurePath console to design 3268?