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TMS320VC5416: Inquiry about core supply voltage

Takayuki Miyazaki
Genius 10120 points
Part Number: TMS320VC5416

Our customer has developed their system with TMS320VC5416ZWS120 (120MHz) previously, due to shortage issue, customer plans to replace TMS320VC5416ZWS120 (120MHz) with TMS320VC5416ZWS160 (160MHz). According to datasheet “5.2 Recommended Operating Conditions“, core supply is defined as follows. Even when the TMS320VC5416ZWS160 is operated at 120Mhz frequency , should customer need to meet the following spec?

Since customer is using TMS320VC5416ZWS120 with 1.5V Core power supply voltage, they’d like to use TMS320VC5416ZWS160 (120MHz) with 1.5V Core power supply voltage, if possible. It means, customer would like to use the current board design.

It will be really appreciated if you will share your advice/comments on this inquiry.

Best regards,

Miyazaki

  • 0
    TI__Genius 10120 points

    Hi Experts,

    Can I have your comments on this inquiry, please?

    Best regards,

    Miyazaki

  • 0 in reply to Takayuki Miyazaki
    TI__Genius 10120 points

    Hi Experts,

    I'm sorry to rush you, but, I cannot receive any comments for one week..

    Can I have your comments on this inquiry, please?

    Best regards,

    Miyazaki

  • 0 in reply to Takayuki Miyazaki
    TI__Intellectual 2665 points

    Hello,

    The customer would need to use the 1.6V core for the TMS320VC5416ZWS160 since the Datasheet specifically calls for this core voltage. We would not be able to comment if the TMS320VC5416ZWS160 can work at 1.5V for 120MHz. This would have to be validated by the customer.

    Regards,

    Anita

  • 0 in reply to Anita Pratti
    TI__Genius 10120 points

    Hi Anita,

    Thank you for your clarification.

    I'll share your comments with our customer soon.

    Best regards,

    Miyazaki

  • 0 in reply to Takayuki Miyazaki
    TI__Genius 10120 points

    Hello Anita,

    I received further question from customer, after sharing your comments. Customer is asking the more detail reason why customer needs to supply 1.6V core voltage for  TMS320VC5416ZWS160. They mean, they would like to know what difference between those device internally, Since TI releases TMS320VC5416ZWS120 and TMS320VC5416ZWS160 separately, customer believes there may be difference (for example, internal regulator or clock generator, etc. ). Could you clarify this, please?

    And then, to be sure, they would like to clarify the difference of external components implementation except core voltage supply.

    The reason why customer is asking is, customer wants to confirm if there is not any problem for this difference especially after this replacement. I believe one of reason is that there is not reliability data that TMS320VC5416ZWS160 can work at 1.5V for 120MHz.

    It will be really appreciated if your will share further advice/comments on this inquiry.

    Best regards,

    Miyazaki

  • +1 in reply to Takayuki Miyazaki
    TI__Intellectual 2665 points

    Hello,

    Our final production test comprehends the core voltage specified in the Datasheet for a certain part number. So the part TMS320VC5416ZWS160 would have been tested and qualified for this particular core voltage. If the customer is planning to use this at a different voltage - we cannot confirm if the Datasheet parameters would hold correct.

    Regards,

    Anita

  • 0 in reply to Anita Pratti
    TI__Genius 10120 points

    Hello Anita,

    Thank you for your comments on this further question.

    I'll share your comments with customer.

    Best regards,

    Miyazaki