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TAS5756M: application question about TAS5756M+TAS5760M in 2.1 channel system

Part Number: TAS5756M

Hi,TI Pals

I want to use TAS5756M and TAS5760M to design a 2.1 channel system(reference "TIDA-00404"),it's a smart audio product which support AEC function.

Question: 

As the following block diagram, we want to select  the “Post-DSP” signal as the SDOUT, and use this signal for the echo reference. our audio processor only need the stereo signal for echo reference, do not need the subwoofer signal.

On the other side, the SDOUT (Post-DSP) can driver the TAS5760M in subwoofer mode, or not?  

if yes,  the output  frequency range of TAS5760M can be fine tune by ourself? 

thx

yk

  • Hello,
    We are looking into this and Andy will get back to you later.
  • If you want to follow the TI Design TIDA-00404, you need to use HybridFlow 2 instead of HybridFlow 3. HybridFlow 3 is for 1.1 systems. Its SDOUT is not used to drive a TAS5760M.
  • In reply to Andy Liu SH:

    Hi Andy

    thanks for your reply.

    how about the below diagram, it can support 2.1 channel and AEC function or not? Use TAS5756M(Hybrid Flow 2 for Stereo)+TAS5756M(Hybrid Flow 4 for Subwoofer). echo reference signal path is highlight in the below picture, it's achievable?

      

  • In reply to user5267688:

    If you really want to use 2 TAS5756M devices for your 2.1 system, I think your system will be like the block diagram below.

  • In reply to Andy Liu SH:

    Hi Andy

    OK,got it. Many thanks for your great support.

    yk

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