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MSP430 USB audio class to PCM interface

Charles McCallum
Intellectual 2620 points

I have a customer that is interested in interfacing a Si3210 SLIC to a MSP430 with USB to add support for USB.  This would require connecting to the Si3210 SLIC via the PCM i/f and providing USB audio device support.

Does MSP430 with USB support Audio (Isochronus) Class driver?

Can the MSP430 interface to a PCM i/f standard?  See Below:

  • 0
    TI__Genius 9225 points

    Unfortunately the USB module doesn't support isochronous transfers.  This is a hardware limitation, so there's no way around it, other than doing audio with a different device class.  For example, you could probably do voiceband audio with a composite HID+HID setup, if you were willing to accept the tradeoffs involved (that is, different host software situation, and develop a simple coding scheme to interleave the data -- pretty simple using our HID API stack).   

    If you're open to that, let me know and we can discuss further, as well as explore the PCM question.

    Regards,

    Keith

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