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Original question:

DP83869HM: Schematic Review

DP83869HM: Layout guideline

Manoj Chate
Prodigy 180 points
Part Number: DP83869HM
Other Parts Discussed in Thread: DP83869

Hi Team,

1.What is the maximum length allowed for fiber output signals ? (Pin14-17) 

2.Within how many mils length matching should be done ? (Pin14-17)

Also , I have connected PHY Port signals as inputs to DP83869 (4 differential pairs ). What is the maximum length allowed for these signals and Within how many mils length matching should be done ?

Thanks,

 

  • +1
    TI__Genius 16030 points

    Hello Manoj,

    We dont have any limit defined on the lenght of fiber output signals. But general guideline/recommendation for both copper side and fiber side MDI traces is to have length less than 2inches and matching accuracy 20mils for 1G transmission and 50mils for 100Mbps transmission.

    --

    Regards,

    Vikram