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McBSP as a high speed interface

Charles Ung
Prodigy 180 points
Other Parts Discussed in Thread: OMAPL138, OMAP-L138

Hi,

From the OMAPL138 McBSP documentation, it states the following:

1.1 Purpose of the Peripheral

The primary use for the multichannel buffered serial port (McBSP) is for audio interface purposes. The McBSP is a specialized version of the McBSP peripheral used on other TI DSPs. The primary audio modes that are supported are the AC97 and IIS modes. In addition to the primary audio modes, the McBSP can be programmed to support other serial formats but is not intended to be used as a high-speed interface.

So can someone tell me what is special about the McBSP on the OMAP? Also, if I try to use it as a high-speed interface even though it says that it is not intended to be used that way, what limitations or issues will I run into?

Thanks,

Charles

 

  • 0
    TI__Genius 14965 points

    Hi,

    The McBSP interface limitation can be found at McBSP Electrical Timing spec from data manual http://www.ti.com/lit/ds/symlink/omap-l138.pdf.

    Regards,

    Hyun

  • 0 in reply to Hyun Kim
    Prodigy 180 points

    I know that. I just want to know the reason behind the comment that I have found in the doucment saying that it is not a regular McBSP and is intended to be used as a high speed interface. From the electrical spec, it can go as fast as 50 MHz and I would call that a high speed interface at that speed.

    Regards,

    Charles