Pci-E Slots - Seco CCHPC-C78-C User Manual

PCI-e Slots

COM HPC specifications foresee up to 48 PCI-
groups of PCI-e lanes. Each group is provided with its own reference clock.
On HC78 carrier board, these lanes are so used:
PCI-e lanes #0..#3 are carried to a single PCI-e x4 slot, CN73.
PCI-e lanes #4..#7 are carried to another single PCI-e x4 slot, CN74.
PCI-e lanes #8..#11 are carried to an M.2 Socket 3 Key M NVME slot, CN12.
PCI-e lanes #12..#15 are carried to a second M.2 Socket 3 Key M NVME slot, CN14.
PCI-e lanes #16..#31 are carried to a single PCI-e x16 slot, CN13. This one can also be used for PCI-e graphics (PEG) Cards
PCI-e lanes #32..#47 are carried to another PCI-e x16 slot, CN72.
All of the previous slots have a dedicated reference clock, which is managed directly by the COM HPC Client module or by a PCI-e clock buffer embedded on the
carrier board.
Please be aware that availability of all sixteen PCI express lanes depends on the COM HPC module used.
Please check the User Manual of the COM HPC module used for details about the availability of these lanes and all possible groupings that can be applied to these
lanes.
On HC78 carrier board, the PCI-express compatibility is ensured with devices up to Gen3.
CCHPC-C78-C
CCHPC-C78-C - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: S.O. - Reviewed by E.S. Copyright © 2023 SECO S.p.A.
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