PCIE Switch IC XIO3130 issue.
we have used the chip XIO3130 in our design. The PCIe_UP_CLKP/N is 100MHz,and PCIe_UP_Nreset is high in noral operation.we also captured those two signals with oscillograph. And we also captured PCIe_UP_TXP/N(it should be RXP/N for XIO3130, and TXP/N for SoC from xilix ) waveform with oscillograph, but we can't detect the PCIe_UP_RXP/N(it should be TXP/N for XIO3130, and RXP/N for SoC from xilix ).The below pictures are the CLK signal and PCIe_UP_TXP/N sigal waveformes. We set the PCIe_UP_CLKP/N PCB trace impedence to 100Ω，PCIe_UP_TXP/N and PCIe_UP_RXP/N is 85Ω. but why XIO3130 don't send the PCIe data signals? The below also includes the schemeatic.
