EKF PC7-FESTIVAL, Руководство пользователя

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User Guide • PC7-FESTIVAL • CompactPCI® PlusIO CPU Board
PCI Express® Interface
The PC7-FESTIVAL is provided with several PCI Express (PCIe) lanes for I/O expansion. The CM238
offers a total of up to sixteen PCI Express ports supporting PCIe Gen 3 speed (8GT/s).
Three of them are used to operate the two Ethernet Controllers (i219LM and i210IT) and the PCIe
to PCI Bridge (PI7C9X112). Four ports are connected to the CompactPCI® connectors J2 (four
lanes), four to the high speed expansion connector P-HSE2.
Four combo ports are fed to the local expansion interface connector P-HSE1, that may work as
PCIe (1x4 or 2x2) or as SATA ports, strapped dynamically by configuration signals on P-HSE1.
Possible settings are
<
One PCIe link x 4
<
Two PCIe links x 2
< Four SATA links
< One PCIe link x 2, two SATA links
By default the PCIe lanes connected to the 2nd high speed expansion connector P-HSE2 build four
PCIe links with one lane. Alternative configurations (1x4 or 2x2) are possible by programming
soft-straps within the PC7 firmware image. Ask EKF if changes are required.
See sections “P-HSE1" and “P-HSE2" from “Mezzanine Connectors" for further details.
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