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McBSP on OMAP3730

Girisha SG
Intellectual 970 points

Hello,

We have asynchronous input source connected to McBSP of OMAP3730 ... can McBSP take asynchronous input ?

Regards,

Girish

  • 0
    Intellectual 970 points

    If yes, how to configure the same!

  • 0 in reply to Girisha SG
    TI__Mastermind 28025 points

    McBSP is a synchronous interface and requires a clock to capture data.

    It may be possible to use the SRG to internally generate the clock which would then be used to over sample the asynchronous input. Frame sync could be used to detect a start marker (if available) and sync to each word of sampled data. Software would need to process the samples to determine the actual input data.

    It really depends on the format of the source signal whether or not this technique might work but it's a suggestion to at least get you started. 

    This is not a normal use case for the McBSP and I have no example code to share.

      Paul