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Original question:

DS125BR820: DS125BR820 P/N swap question

DS125BR820: does it support lane swap?

Gino Hu
Prodigy 10 points

Part Number: DS125BR820

Hi TI team,

We plan to use this part as PCIE GEN3 repeater on our board, could you help to confirm if this repeater support lane swap or not?  for example , can below connection work: 

PCIE GEN3 TX laneY  --> IA/B_X  --> OA/B_X --> PCIE GEN3 RX laneY , and  variant X ,Y  are any combination of 0-7.

For example :

  • 0
    TI__Guru* 93570 points

    Hi Gino,

    It does not support lane swapping or polarity inversion. DS125BR820 is a linear redriver or analog buffer operating at high speed and it does not have the intelligence to do lane swapping. Please send me email(nasser.mohammadi@ti.com). 

    Regards ,,, Nasser