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DS110DF111: DS110DF111 setting questions

Part Number: DS110DF111

Hi all,

 My customer use DS110DF111 for SFP redriver  function. Would you please helping to check their questions below?

1. Customer use 0x1F to invert channel polarity. When they set it in both channel A and B, the result is not the same as the test  of inverting signal by wire jumping outside the ic. But if they only set it in 1 channel, the result will be correct...

2. Customer want to fix 10.3125G OR 1.25G by external setting so they can't use REG 0x2f to define 1.25G speed. So they have to define it manually by register 0x60~0x64. Do you have reference value for 1.25G setting in those registers?

Thanks for your kindly help.

Best regards,

Gary Teng

  • Hi,

    1. If the signal is inverted twice the original polarity is restored
    2. See below suggested retimer channel register settings for fixed 1.25Gbps operation
      • 0x60 = 0x00
      • 0x61 = 0xB2
      • 0x62 = 0x00
      • 0x63 = 0xB2
      • 0x64 = 0xFF
      • 0x09 = 0x04 (enable divider override)
      • 0x18 = 0x30 (force divide by 8)

    Cordially,

    Rodrigo Natal

    HSSC Applications Engineer