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C6457 package marking

sch
Intellectual 535 points

Dear colleagues,

 

Could you tell about marking of C6457 package - if it looks like

TMS320C6457CMH

$414-09A4SHW

(c) 2007 TI

   G1                       82

what its revision is, and speed ?

 

BR&Thanks,

Serge

  • 0
    TI__Guru* 84110 points

    Please see the C6457 datasheet sprs582 page 56 for part number dissection. Also, please see the C6457 errata sprz293 page 6 for additional details on the package markings.

    Regards,
    RandyP

     

    If this answers your question, please click the  Verify Answer  button below. If not, please reply back with more information.

  • 0 in reply to RandyP
    Intellectual 535 points

    Hello, RandyP

     

    Thanks for help, but I have not answer  yet. Typically TI describe silicon rev at package as wrote in  errata, but

    $414-09A4SHW is not compatible with template  "#xx-#######". Is symbol '$' just point to new silicon manufacturer, then what about "414"?

     

    BR & Thanks,

    Serge

     

  • 0 in reply to sch
    TI__Guru* 84110 points

    Serge,

    The xx field is the 14 in your package markings. It is odd that this conflicts with the part number which should have an extra C between the 6457 and CMH.

    From the datasheet, you can tell the speed grade from the package marking. No speed suffix means 1GHz speed grade.

    Can you read the revision registers that are described in the errata document? This would settle the question on silicon version. What is the source of the device, EVM, prototype board, customer board, or such?

    Regards,
    RandyP

  • 0 in reply to RandyP
    Intellectual 535 points

    RandyP,

    Thanks a lot!  This

    RandyP said:
    The xx field is the 14 in your package markings. It is odd that this conflicts with the part number which should have an extra C between the 6457 and CMH.

    looks like truth - despite absence 'C' before "CMH" in package marking this DSP presents to me as CCMH.


    BR&Thanks,

    Serge