National Instruments MXI-Express x4 Series User Manual

Also see for MXI PCIe-8375: Setting up

Contents

National Instruments MXI-Express x4 Series User Manual Manual pdf 21 page image

Chapter 3 Hardware OverviewFiber-Optic MXI-Express x4 for PXI Express User Manual 3-2 ni.comFigure 3-1. Fiber-Optic MXI-Express x4 Block DiagramFunctional Unit DescriptionsPCI Express x4 Card Edge ConnectorThe card edge connector allows you to use the NI PCIe-8375 in a x4 orwider PCI Express slot in a PC. The PCI Express Card ElectromechanicalSpecification defines this connector.PCI Express SwitchThe PCI Express Base Specification defines a PCI Express switch as alogical collection of PCI Express-to-PCI Express bridge devices. On theNI PCIe-8375, the upstream port of the switch is connected to thePCI Express x4 card edge connector, and the downstream port is connectedto the cabled Fiber-Optic MXI-Express x4 connector.On the NI PXIe-8375, the upstream port of the switch is connected to thecable PORT 1. One downstream port is connected to the SMBus Master,and four x4 ports or two x8 ports are connected to the backplane,depending on the chassis backplane configuration. There also is adownstream Fiber-Optic MXIe port on the front panel (PORT 2) connectedto the PCI Express switch for daisy chaining.NI PCIe-8375PCIExpressSwitchNI PXIe-8375SMBusMasterPCI ExpresstoPCI BridgePCI EXPRESSPXI EXPRESS BACKPLANEPCIExpressSwitch 4 x4 PCIe links or2 x8 PCIe linksFiberOpticMXIExpressx4ConnectorFiberOpticMXIExpressx4ConnectorFiberOpticCablePORT 1 (upstream)PORT 2 (downstream)FiberOpticMXIExpressx4Connector