The UPHY1 Mapping in the AGX orin design guide is indicated as follows.
Is it possible to connect an x4 PICe switch chip to an x8 PICe (C5) and use 4 PCIe Lanes (x1, x1, x1, x1) by mapping them as shown in Case-1) below?
Or should I use a PCIe switch that provides x8 like Case-2) below?
I don’t get what you mean of “4 PCIe Lanes (x1, x1, x1, x1)”.
C5 can support PCIe x4 device. If need to connect 2 PCIe x4 devices to C5 port, a switch is necessary.
I need only 4 PCIe Lanes (4 (x1) lanes) from C5
but C5 has x8 pcie.
My question is for this 4 x1 lane design, should I interface a C5 port with a PCIe switch 8-port switch or a 4-port PCIe switch?
Regards,
netkerl
4-port switch is ok.
If only one device, you can connect device to C5 directly, switch is unnecessary.
Thank you very much Trumany,
OK. I will use one 4-port 4-Lane switch by connecting C5 of AGX orin.
Regards,
netkerl
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