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TI Home » TI E2E Community » Support Forums » Digital Signal Processors (DSP) » C6000 Multicore DSP » Keystone Multicore Forum (C66, 66A, AM5) » TMS320C6678 Part Numbers
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    TMS320C6678 Part Numbers

    This question is answered
    Andrew Patzwald
    Posted by Andrew Patzwald
    on Jun 20 2012 15:47 PM
    Prodigy140 points

    Could someone please explain what the differences are between these part numbers?  The 6678 data sheet does not say what features are enabled for which part numbers. 

    • TMS320C6678CYP – Standard 1 GHz
    • TMS320C6678CYP25 – Standard 1.25 GHz
    • TMS320C6678ACYP – ??
    • TMS320C6678XCYP – 1GHz with security accelerator?
    • TMS320C6678CYPA – Extended temperature range

     

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    • BrandonAzbell
      Posted by BrandonAzbell
      on Jun 20 2012 16:01 PM
      Verified Answer
      Verified by Andrew Patzwald
      Guru54790 points

      The datasheet contains a figure that explains the various part numbers.  Please refer to Figure 2-17 on page 65.

      Brandon

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    • Andrew Patzwald
      Posted by Andrew Patzwald
      on Jun 20 2012 16:04 PM
      Prodigy140 points

      Thanks!  I looked at that section, but failed to goto the next page.  /sigh

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    • Johannes
      Posted by Johannes
      on Jun 21 2012 06:35 AM
      Genius3140 points

      Hi,

      Regarding to the standard speed, if I have a 6678 which standard is 1 GHz can I use it at 1.25 GHz?

      Is this the reason why the platform that comes with xdc has a clock speed of 1 GHz instead of 1.25 GHz?

      And why do we have two standard clock speeds? They come from different parts of the wafer or the 1 GHz are older than 1.25 GHz and as the fabrication process improved we got faster DSPs?

      Regards

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    • BrandonAzbell
      Posted by BrandonAzbell
      on Jun 21 2012 08:52 AM
      Guru54790 points

      Johannes

      Regarding to the standard speed, if I have a 6678 which standard is 1 GHz can I use it at 1.25 GHz?

      The Device Speed Range parameter indicates the maximum clock speed of that particular device.  Therefore, to answer your question, no, it would not be appropriate to purchase a device spec'ed at 1GHz (tested, etc) and run at 1.25GHz.

       

      Johannes

      And why do we have two standard clock speeds? They come from different parts of the wafer or the 1 GHz are older than 1.25 GHz and as the fabrication process improved we got faster DSPs?

       
      Providing Device Speed options offers customers with options and the opportunity to perhaps save a little or spend more money for the performance.

      Brandon

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    • Johannes
      Posted by Johannes
      on Jun 21 2012 09:43 AM
      Genius3140 points

      Brandon,

      Thanks for your answers, now I understood it.

      Regards

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    • Johannes
      Posted by Johannes
      on Jun 28 2012 07:08 AM
      Genius3140 points

      Brandon,

      I was wondering if it's possible to know exactly tha part number of the DSP chip that comes with the EVM without taking off the cooler and looking at it.

      Regards

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