[HARDWARE] XAVIER MODULE impedance matching

Autonomous Machines Jetson & Embedded Systems Jetson AGX Xavier
#1

dear. all

recently, we made the Xavier board and now finished to check functions,

so we will proceed the second PCB for end customer,

function and etc. no problem, but I want to improve design for performance.

we apply the 2 function SATA3 and 10G ethernet solution.

question is as bellow.

  1. SATA3 PCIe trace
    UPHY_TX0_P, UPHY_TX0_N, UPHY_RX0_P, UPHY_RX0_N = impedance 85ohm
    Is this right? (ours first version is 100ohm, but no problem)

  2. 10G ethernet
    NVHS0_TX0_N, NVHS0_TX0_P, NVHS0_TX1_N, NVHS0_TX1_P, NVHS0_TX2_N, NVHS0_TX2_P, NVHS0_TX3_N, NVHS0_TX3_P… = impedance 85ohm
    Are they some same impedance matching?
    (ours first version is 100ohm, but no problem)

#2

Hi, the impedance is 85+/-15%, 100ohm is a little higher than limit, better to follow OEM DG to keep as close as to 85ohm.

#3

thanks a lot and best regards. :)

#4