• State Resolved
  • Locked Locked
  • Replies 4 replies
  • Answers 1 answer
  • Subscribers 30 subscribers
  • Views 451 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.

TAS6424EQ1EVM: Way to get 4 channels digital data signals using TDM8 mode in TAS6424EQ1EVM

Rajul Bhambay
Prodigy 280 points
Part Number: TAS6424EQ1EVM
Other Parts Discussed in Thread: TAS6424E-Q1

Tool/software:

I am giving 4 channel TDM input via SDIN1 input pin in TAS6424EQ1EVM. Using TDM8 mode configurations i am able hear audio via 4 speakers. Is there any way i can tap 4 channel digital output data signals from any jumpers?   

  • 0
    TI__Mastermind 45035 points

    Hi Rajul,

    I am trying to understand your description.  With the TAS6424EQ1EVM, you are providing a TDM8 signal from an external source to the header pins that I provided on the EVM.  If you want to daisy-chain the digital audio to another TAS6424E-Q1 device for the other 4 channels, you will need to do that from your external source.  We do not provide any way to do that with the EVM.

    Regards,
    Gregg Scott

  • 0 in reply to Gregg Scott
    TI__Prodigy 280 points

    Hi Gregg,

    Thanks for the quick response. I don't want to do a daisy chain here. I just need to validate 4 channel audio data that i am sending in a TDM way through SDIN1 pin. 
    For example, assume i am sending this data stream to SDIN1 pin using TDM8 mode- " 0x11,0x22,0x33,0x44". It will be converted to actual audio and played across 4 speakers. So, i need to validate each channel data if that is 0x11,0x22,0x33,0x44 or not. Is there any pins in EVM which transmit digital data corresponding to all 4 channels? 

  • +1 in reply to Rajul Bhambay
    TI__Mastermind 45035 points

    Rajul,

    Still not 1005 sure what you are needing, but I will give you what the device and EVM capabilities are, so you can try to test your channels.

    You will need to use I2C to control the data.  Using Tabel 9-1 on page 23 and register 0x03 bits 3 and 5, you can change the slots to use for the device.  The audio output will go to the indicated channel output.

    The EVM does not generate TDM signals.  You will need to generate them from an external source.  You should be able to measure your source for the slots.  Your source can turn on and off the data to each slot so you can see it go the proper channel.  

  • 0 in reply to Gregg Scott
    TI__Prodigy 280 points

    Thanks Gregg! It resolves my query.