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DS110DF1610 / recommended register setting for CPRI

Toshiyuki
Mastermind 7075 points
Other Parts Discussed in Thread: DS110DF1610, DS125DF1610

Hi,

Customer is considering DS110DF1610 for CPRI line. Please let me know how to set 0x60,61,62,63 and so on  for 9.8304Gbps,4.9152Gbps and 2.4576Gbps.

In addition, DS125DF1610 datasheet on the web describe that operating temp range is from -20℃　to +85℃. Is the description of -20℃ correct?

Would you tell me why the operating temp range is different from DS110DF1610 and DS125DF1610?

Best Regards,

Kato

  • 0
    TI__Mastermind 43795 points

    Hi Kato,

    I do not know about the -20C operating temperature.

    Here is the register programming information.

    0x2D[7:4] = 0010'b  //* to set divide ratio's of 1x 2x and 4x

    0x60 = 26'h

    0x61 = B1'h

    0x62 = 26'h

    0x63 = B1'h

    0x64 = FF'h

    Regards,

    Lee 

  • 0
    TI__Mastermind 19235 points

    Hi Kato-san. For the temperature questions,

    The DS125DF1610 is indeed specified for an ambient operating temp range of -20C to 85C. Accordingly we tested the product to ensure that parametric performance is guaranteed over this temperature range. The slight operating temp range difference between DS110DF1610 and DS125DF1610 has mainly to do with the testing that we performed prior to product releases. While the DS110DF1610 originated as a custom product, the DS125DF1610 was defined as a broader market product, and thus its specified operating temperature was extended accordingly.

    Cordially,

    Rodrigo Natal

    DPS Applications Engineer

     

     

     

  • 0 in reply to Rodrigo Natal
    Mastermind 7075 points

    Hi Rodrigo - san,

    Thank you for your reply. I understood the meaning.

    Best Regards,

    Kato

  • 0 in reply to Lee Sledjeski
    Mastermind 7075 points
    Hi Lee -san,

    Thank you for your cooperation.
    Best Regards,
    Kato