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TUSB7320 PCIe2.0 differential signal PCB impedance trace requirement
Hi,Please can you help me to get proper info for PCIe2.0 differential signal PCB impedance trace requirement ?
As per sllu146_EVM User's Guide it is 100ohm but as per PCI Express 2.0 channel impedance required is 85ohm.
Please correct me if my understanding is not correct.
Please can you suggest, Is it 100Ohm impedance differential signal pcb trace or 85Ohm?Regards,Sachin.M.Kurawatti
The PCIe 2.0 specifies a a differential impedance 80ohm min and 120 ohm max.
The TUSB7320 has 50ohm integrated termination on its PCIe RX and TX lines, so you should keep the 100ohm differential impedance.
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