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TMS320F28388D: TMS320F2838xD Parallel ADC interface

Benjamin Maxwell
Prodigy 50 points
Part Number: TMS320F28388D


Hello,

We are considering changing from the TMS320F2837xD for the newer TMS320F2838xD line to get access to the connectivity manager on board the chips, however we are currently using the parallel port module for interfacing with an external ADC. Since the TMS320F2838xD does not have a parallel port module we want to confirm that the FSI module will be able to fill the role of the uPP interface or if making a parallel data interface will be more involved (bit banging).

Thanks

 

  • +1
    TI__Mastermind 45606 points

    Hi Benjamin,

    The FSI module has a specific frame / packet structure, shown below. Note that the FSI-SPI compatibility mode frame is slightly different.

    The external ADC would need to be able to accept this frame structure limitation in order to interface with the FSI module. I don't expect this to be the case for most (or even any) ADCs.

    You can consider using the EMIF (External Memory Interface) peripheral to interface with an external ADC instead.

    Best,

    Kevin