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    EPI as slave? (with external clock)

    • Deenayd
      Posted by
      on Aug 18 2009 02:35 AM
      Prodigy10 points
      Hello,


      I'm searching for a microcontroller that could work as a slave in parallel communication. I am not sure if LM3S5791 and similars could do that (using module called EPI).

      It is not clear for me from the documentation how to do that, but I have found informations that EPI can be used for interprocessor communication. Well - if it can, than it should be possible to configure one of them as a slave.

      Communication master (I can't control it too much) can work in one of two modes:
      1. constant clock (9,333MHz), a signal that says "in this cycle data are valid" and 8 bits wide data bus.
      2. gated clock that pulses only if data are valid and 8 bits wide data bus (clock's speed is also 9,333MHz when it pulses).

      I need to read and process those data (in fact there is not too much to do after getting them into RAM).

      I thought EPI could be used to that, but I find it difficult to understand how it could be configured to use external clock. It looks like it could only work with built in clock, but how could it be used for interprocessor communication?


      Is there something obvious I'm missing?


      Thanks for any hints you can provide :)
      Deenayd
      Report Abuse
    • TI - Eric Hewing
      Posted by
      on Aug 18 2009 16:41 PM
      Expert4160 points
      The EPI is master/host only.
      Report Abuse

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