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multi-I2S channel input to TDM output

Chiajung Hsu
Intellectual 280 points


Hi Sir, 

We have a new design which has the multi audio source. It means that there are several I2S channels in this system. Our SOC only have one I2S channel. So, we need to configure this I2S to TDM mode so that this I2S can receive the multi audio source. Based on this reason, we are looking for the audio codec which can receive the several I2S channels and combine into one I2S which is configured as TDM mode. Could you advice the audio codec to achieve this purpose?

  • 0
    TI__Guru 57800 points

    Hi, Chiajung,

    We have limited options for audio codecs with multiple digital interfaces, the TLV320AIC326x family of devices features up to three audio serial interfaces (ASIs), where you can use the miniDSP within the parts to capture the content from two ASIs and stream it through the remaining TDM interface. This would be the only option we have for an application like this.

    Best Regards,

      -Diego Meléndez López
       Audio Applications Engineer

  • 0
    Genius 3945 points
    You have an SoC -- isn't that a processor glued to some FPGA logic? You could merge the I2S channels into TDM in the FPGA and then have the processor access the TDM data, perhaps over some standard bus.