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SPI Explained

Discussion in 'Electronic Design' started by Paul Burke, Aug 10, 2007.

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  1. Paul Burke

    Paul Burke Guest

    The Farnell website has the best explanation of SPI that I've seen in
    some time:

    "Parallel SCSI (formally, SCSI Parallel Interface, or SPI) is one of the
    interface implementations in the SCSI family. In addition to being a
    data bus, SPI is a parallel electrical bus: There is one set of
    electrical connections stretching from one end of the SCSI bus to the
    other. A SCSI device attaches to the bus but does not interrupt it. Both
    ends of the bus must be terminated."

    That should make it easy for beginners to interface their E2PROMs!
  2. Eeyore

    Eeyore Guest

    There is NO connection between SCSI and SPI *WHATEVER*

    SPI = serial peripheral interface
    SCSI = small computer system interface

    Utterly different in about as many ways as you could imagine.

  3. Guest

    It'll make it fast, in any case...
  4. Guest

    Check the Wiki entry for SCSI, and you will see the acronym SPI used
    to describe exactly what the OP was referring to.
  5. I guess now that SCSI is going SAS they need to come up with a new
    abbreviation for the original (parallel) forms of SCSI?

    Best regards,
    Spehro Pefhany
  6. Eeyore

    Eeyore Guest

    I see it. Was there ever an 'SPI' that meant that ? I've never met it.

    In any case the SPI mentioned by Farnell is definitely the serial peripheral
    interface type as used by some EEPROMS for example.


  7. Its starting to sound like the morphmister. First it was SASI, then

    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
  8. People Can't Memorize Completely Idiotic Acronyms.
  9. Then there's whatever PCMCIA is called this week..

    Best regards,
    Spehro Pefhany
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