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    transceiving digital sound through SPI interface

    Hi,
    I want to send digital sound through an SPI link to a destination and wise vice versa. In other words, I want to make a digital sound transceiver that transmits the sound via an SPI link.
    Is there any IC that do this or do you have any other Idea ?
    Thanks,
    Best Regards.
    Last edited by rezaf; 12th November 2013 at 09:05.

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    Re: transceiving digital sound through SPI interface

    There are a quite a few analog-to-digital converters that have an SPI output (look at Linear.com). Is that what you mean? BTW, there is no "digital sound"; sound is an analog phenomenon.



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    Re: transceiving digital sound through SPI interface

    Ok, sound is analog phenomenon but I have an digitized audio signal (stream) (converted from analog to digital) that want to send and or receive via an SPI link. (I can't use A/D with SPI interface)
    please see that this sparkfun's module (https://www.sparkfun.com/products/9235) do this for me or no ?
    Last edited by rezaf; 16th November 2013 at 14:43. Reason: adding sparkfun module



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    Re: transceiving digital sound through SPI interface

    You want to send SPI data back and forth between two points, right? I'm afraid I don't understand your question. The fact that the SPI data represents audio is irrelevant. Maybe you can give us a better description of what you're trying to do.



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    Re: transceiving digital sound through SPI interface

    I hope the image attached to this post help you to understand my question.



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    Re: transceiving digital sound through SPI interface

    Quote Originally Posted by rezaf View Post
    I hope the image attached to this post help you to understand my question.
    Nope.

    Are you asking for what chip to use for SPI transmission? I could be wrong, but I don't think SPI has a hardware (i.e., signalling level) definition; it's a communications protocol with 3 (or 4) lines. Also, SPI is not really intended for long-distance data links, it's designed for chip-to-chip communications. What is your intent?



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    Re: transceiving digital sound through SPI interface

    OK. I want a chip or a set of module (double) that do this work for me. I completely know SPI and PCM protocols and know that aren't special hardware but many electronic parts and modules use SPI for communications in small distances and also some systems use PCM for modulating sound signals.
    output of my board (chip) is a PCM signal, I want to transfer it to another near board (chip) by SPI protocole (4 wire hardware). do you know any module or chip ?



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    Re: transceiving digital sound through SPI interface

    So what you want is to convert PCM to SPI? If you said that to begin with, that would have saved a LOT OF TROUBLE.

    No, I don't know of any chips that will do this.

    Stupid question: Why can't you send your PCM stream?



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