BPI-F3 SBC: How many PCI lanes and to where. M2 slot 1 or 2?

[pi1]

Hi,

On the BPI-F3, does the 80x22mm M.2 slot on the lower side get one or two PCIe v2 lanes?

And the MiniPCI slot on the upper side, does it get one PCIe v2 lane?

The K1 SoC has 2+2+1=total 5 lanes of PCIe, right. Where do the other 2-3 lanes go?

The BPI-F3 has a WIFI-BT chip onboard. It’s connected via SDIO and therefore does not take any PCIe lanes, right?

Thanks

e

[simon]

Hi，

It is easier to understand by looking at the schematic.

PCIeA is combined with USB3.0 and used for USB.

PCIeB’s 2x lanes are used for SSDs,

PCIeC only uses 1x lane for miniPCIe

Wi-Fi uses SDIO module RTL8852BS