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what is the difference between TMS320DM8127BCYE3 and TMS320DM8127BCYE2?

pavel4378
Intellectual 575 points

Other Parts Discussed in Thread: TMS320DM8127, TMS320DM8148

Hi all.

We need to purchase a large amount of DM8127 chips for our next product. there are two models in the market:TMS320DM8127BCYE3 and TMS320DM8127BCYE2. The TMS320DM8127BCYE2 is the model of we used in our demo board. so We want to konw what is the difference between TMS320DM8127BCYE3 and TMS320DM8127BCYE2? Does TI has a document to describe the differnence bewteen the models?

Thank you!

  • 0
    TI__Guru**** 170625 points

    Hello,

    pavel4378 said:
    there are two models in the market:TMS320DM8127BCYE3 and TMS320DM8127BCYE2.

    From the official DM8127 product page I can see we have several more models available, not just two.

    http://www.ti.com/product/tms320dm8127

    TMS320DM8127BCYE0
    TMS320DM8127BCYE1
    TMS320DM8127BCYE2
    TMS320DM8127BCYE3
    TMS320DM8127BCYE3L
    TMS320DM8127BCYED1

    pavel4378 said:
    so We want to konw what is the difference between TMS320DM8127BCYE3 and TMS320DM8127BCYE2? Does TI has a document to describe the differnence bewteen the models?

    Usually these things are documented in the device datasheet and/or silicon errata. So you should check the DM8127 datasheet and silicon errata.

    For example, this is what we have in the DM814x datasheet:

    http://www.ti.com/lit/ds/symlink/tms320dm8148.pdf

    Table 7-4. Device Operating Points (OPPs)

    CYE1 is for frequencies ARM at 1000MHz, DSP at 700/750MHz, HDVICP2 at 410MHz, HDVPSS at 220MHz, SGX at 280MHz, ISS at 480MHz, M3 at 240MHz, L3/L4 at 220MHz, DDR at 533MHz

    CYE2 is for frequencies ARM at 1000MHz, DSP at 750MHz, HDVICP2 at 450MHz, HDVPSS at 220MHz, SGX at 280MHz, ISS at 560MHz, M3 at 280MHz, L3/L4 at 220MHz, DDR at 533MHz

    9.1.2 Device and Development-Support Tool Nomenclature

    DEVICE SPEED RANGE
    Blank = 600-MHz ARM, 500-MHz DSP
    0 = 720-MHz ARM, 600-MHz DSP
    1 = 1000-MHz ARM, 700-MHZ DSP
    1 = 1000-MHz ARM, 750-MHZ DSP [SR3.0 only]
    2 = 1000-MHz ARM, 750-MHz DSP

    Regards

  • 0 in reply to Pavel Botev
    Intellectual 575 points

    Thank you very much for your kindly reply!

    The question is I only have a draft version of dm8127 datasheet which is published in February 2011, and I can't find the revised version datasheet on http://www.ti.com/product/tms320dm8127.

    so I can't determine the exact differnce between the models. could you provide a revised version datasheet of dm8127 or just describe the differnce as you did on dm8148?

    Thank you very much!

  • 0 in reply to pavel4378
    TI__Guru**** 170625 points

    The DM8127 datasheet requires NDA and is available only through your local FAE / TI representative:

    http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/716/t/279377.aspx

    pavel4378 said:
    or just describe the differnce as you did on dm8148?

     

    I also do not have the DM8127 datahseet, as I am working on DM814x/AM387x devices, which datasheet is public. Thus I can not provide you these differences. Check this with your FAE.

    Regards

  • 0 in reply to Pavel Botev
    TI__Guru**** 170625 points

    I found that the differences between DM8127 BCYE2 and BCYE3 devices are also to higher frequencies for the BCYE3:

    BCYE2: DSP at 600MHz, HDVICP2 at 430Mhz, etc.

    BCYE3: DSP at 750MHz, HDVICP2 at 450Mhz, etc

    But for full description you will need the latest version of the DM8127 datasheet.

    Regards

  • 0 in reply to Pavel Botev
    Intellectual 575 points

    OK, Thank you very much!

  • 0 in reply to Pavel Botev
    TI__Intellectual 890 points

    Dear Expert,

    The DM8127 is pulished on TI's web site now.

    http://www.ti.com/product/tms320dm8127

    However the nomenclature chapter in its data sheet doesn't tell the meanting of "L" for TMS320DM8127BCYE3L device. Could you help to clarift it? Thanks!

    Best regards, YT

  • 0 in reply to YTCheng
    TI__Guru**** 170625 points

    YT,

    YTCheng said:
    However the nomenclature chapter in its data sheet doesn't tell the meanting of "L" for TMS320DM8127BCYE3L device. Could you help to clarift it?

    Please ask/post your question in the below forum:

    https://e2e.ti.com/support/dsp/davinci_digital_media_processors/davinci_rdk/f/876.aspx

    Regards,
    Pavel

  • 0 in reply to Pavel Botev
    TI__Intellectual 890 points

    Noted. Thanks! -YT