pcie impedence for pcb layout!

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pcie impedence for pcb layout!

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BVJ2Vs
Contributor II

Hi,

I am designing a PCB layout for imx6q (SMARC Standard) based carrier board. When we refer the freescale pcb guidelines the impedance for PCIe signals is to be 85 ohms, but in some other docs it stated as 100 ohms. So we are bit confused in the layout design regarding the impedance value Could you please provide the exact impedance value to be used for PCIe signals in our layout impedance value.

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igorpadykov
NXP Employee
NXP Employee

Hi Berlin

please follow freescale pcb guidelines for impedance PCIe signals to be 85 ohms

Best regards
igor
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480 Views
igorpadykov
NXP Employee
NXP Employee

Hi Berlin

please follow freescale pcb guidelines for impedance PCIe signals to be 85 ohms

Best regards
igor
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------