Kontron COMe Starterkit Eval T2 - Manual (Page 51)

COM Express Interfaces
Modules that employ desktop and mobile chip-sets with PEG capability can usually be set up to
allow the COM Express PEG lanes to be configured as a single general purpose PCIe link, with
link width possibilities of x1, x4, x8 or x16. The x1 configuration should always work; the wider
links may be Module and chip-set dependent. Check with your vendor.
Modules based on server-class chip-sets may allow multiple links over the PEG lanes – for
example, a x8 link on COM Express PCIe lanes 16 through 23 and a x4 link over lanes 24
through 27. This is Module and chip-set dependent.
PEG_ENABLE# should be left open when the PEG lanes are to be used for general purpose
PCIe links.
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