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3 pcie x4 interface goldfinger – IEI Integration PICOe-GM45A User Manual

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PICOe-GM45A Half-Size CPU Card

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2.7.3 PCIe x4 Interface Goldfinger

The PCIe x4 from the Intel® ICH9M consists of four lanes. The four lanes are connected

to a single golden finger as shown in

722H

Figure 2-13.

Figure 2-13: PCIe x4 Golden Finger Connection

The PCIe x4 is interfaced to one PCIe x4 expansion card or four PCIe x1 expansion cards

on a compatible PICMG 1.3 backplane.

2.7.4 Intel® PC82574L PCIe Gigabit Ethernet (GbE) Controllers

There are two Intel® PC82574L PCIe GbE controllers installed on the PICOe-GM45A.

The Intel® PC82574L is interfaced through a PCIe x1 channel to the Intel® ICH9M. The

Intel® PC82574L controller is then connected to an RJ-45 Ethernet connector enabling

the PICOe-GM45A to be connected to an external network.