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i.MX8 Quad Max impedance of PCIE and SATA

Question asked by Martin Stelter on Mar 20, 2019
Latest reply on Mar 26, 2019 by Ross Mcluckie

For i.MX8 Quad Max there is only one pin for setting the impedance of PCIE and SATA: PCIE_REXT

 

As SATA and PCIE using different differential impedance i think there is no "optimum" for the impedance.

 

What is the recommendation for PCIE_REXT when using two PCIE-Lanes and one SATA.?

Can we use 85 Ohm for driver but routing with 100 Ohm from SATA specification?

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