• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Subscribers 31 subscribers
  • Views 377 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Original question:

TAS2505: TAS2505

TAS2505: DAC input Pin identifications and relevant signal type

Satish Kumar
Prodigy 15 points

Part Number: TAS2505

Hello Team ,

Here i am using the TAS2505 as sound amplifier with MCU.

I want to understand DAC input of this Sound amplifier and what is its associated pins that i need to consider.

Also which of signal it accepts as DAC input .

Looking forward to your support. 

Regards 

Satish Kumar 

  • +1
    TI__Guru** 114305 points

    Hi Satish,

    The digital audio input to TAS2505 is I2S port, it requires BCLK, WCLK and DIN at least, DOUT is optional as feedback from amplifier to the host controller. These signals are highlighted below:

    Further details on the data format for this interface is available in this application guide: https://www.ti.com/lit/ug/slau472/slau472.pdf#page=34&zoom=0,0,300

    In case your controller does not have a dedicated I2S interface you may use SPI instead; this app note could be useful: https://www.ti.com/lit/an/slaa449a/slaa449a.pdf

    Best regards,
    -Ivan Salazar
    Applications Engineer

  • 0 in reply to Ivan Salazar
    Prodigy 15 points

    Hi Salazar,

    Here i am using I2c to control the DAC,  where i am passing the Device address as 0x30, But i am not getting ack from device.

    i have placed the pull up of 2.7 K on SCK and SCL lines .

    RST pin is high with Pull up of 4.7K .

    SCK PIN is grounded.

    SPI_SEL is connected to GND.

    LDO_SEL is connected with GND. 

    Please Guide me for possible things that i can recheck to get communicated. 

  • +1 in reply to Satish Kumar
    TI__Guru** 114305 points

    Hi Satish,

    Is there a chance you can share a schematic just to double check the components around the device? You can send it over private message if don't want to share publicly.

    Do you have a scope or digital analyzer to inspect the I2C bus during your test?
    It may also be worth inspecting the power supplies during the test, check if there is any droop in IOVDD or other supply.

    Best regards,
    -Ivan Salazar
    Applications Engineer