《pxi总线技术》由会员分享，可在线阅读，更多相关《pxi总线技术（35页珍藏版）》请在金锄头文库上搜索。
1、PXI总线技术OverviewPXI/CompactPCI Architecture Mechanical Electrical Software 3rd Party Support PICMG PXI Systems Alliance Configuring a PXI System Products and technology ApplicationsPricePerformanceDesktop PCVXIModular Instrumentation for Mainstream UsersFilling the GapCompactPCICompactPCI puts PC tec
2、hnology in a small, puts PC technology in a small, rugged package by combining three standards:rugged package by combining three standards:PCI busPCI busEurocardEurocard packagingpackagingBetter IEC Better IEC ConnectorsConnectorsCompactCompactP PCICIPXI Starts with CompactPCI Wide Industry Support
3、Wide Industry Support Plug and Play capability Plug and Play capability Thousands of software productsThousands of software products 32-bit data transfers at 33 MHz 32-bit data transfers at 33 MHz (132 Mbytes/sec)(132 Mbytes/sec) PCI is a PCI is a de factode facto standard standardWhy use the PCI bu
4、s?Higher Pin CountHigher Pin Count Rugged and ReliableRugged and Reliable Integrated ShieldIntegrated Shield Impedance Matched Impedance Matched Most Importantly:Most Importantly: MORE SLOTS!MORE SLOTS!J1J2Why use Different Connectors?Why use Eurocard Packaging? Proven over decades of use in industr
5、ial applications (VME, VXI, etc.) Defined by IEEE 1101 Standard Readily available mechanical components Excellent thermal properties Modular, rugged, and compact PC Motherboard=Controller + Backplane1 2 3 4 5 6 7 81 2 3 4 5 6 7 81 2 3 4 1 2 3 4 PC MotherboardPC Motherboard with 4 PCI slotswith 4 PCI
6、 slotsCompactPCICompactPCI EmbeddedEmbedded ControllerControllerCompactPCICompactPCI 8-slot8-slot BackplaneBackplanePeripheral Sizes in PCI and CompactPCIPCIPCIPXI/PXI/CompactPCICompactPCIHalfHalf SizeSize3 3U UFullFull SizeSize6 6U UPCI boards can be redesigned to PCI boards can be redesigned to fi
7、t in PXI/fit in PXI/CompactPCICompactPCI with little with little or no electrical changes.or no electrical changes.PXI Combines Standard TechnologiesCompactPCompactPCICIP PCICISoftwareElectricalMechanicalThe PXI system specification The PXI system specification extends extends CompactPCICompactPCI f
8、or for Instrumentation.Instrumentation. SSpecificationRevision 1.0 August 20, 1997The Open PXI System SpecificationMechanical ExtensionsPXI improves reliability and interoperability with: Mandatory Active Cooling Temperature Testing and Ratings System-level environmental specificationsfor EMC, shock
9、, vibration, and humidity Defined embedded controller locationPXI/CompactPCI Form FactorsAll 3U cards work in 6U systems64-bit PCI andPXI Features3UPXI/CPCIJ1J232-bit PCI6UPXI/CPCIJ5J4J3J2J164-bit PCI andPXI Features32-bit PCIPXI ReservedPXI ReservedPXI Reserved6 6U Adapter PanelU Adapter PanelSoftw
10、are ExtensionsPXI speeds application development PXI speeds application development because:because:PXI Controllers MUST support a standardPXI Controllers MUST support a standard software framework by including a pre-loaded software framework by including a pre-loaded OS: OS: Windows NTWindows NT Wi
11、ndows 9xWindows 9x Peripherals modules MUST be supplied with a Peripherals modules MUST be supplied with a WIN32 Device DriverWIN32 Device DriverPXI and PC Software is IdenticalOperating systems and application software run unchanged on PXI systems Configuration tools recognize PXI modules as PCI de
12、vicesTrigger BusSystem ControllerStar Trigger ControllerPeripheralPeripheralPeripheral10 MHz CLK132 Mb/s, 33 MHz, 32-bit Computer BusStar TriggerLocal BusElectrical ExtensionsPXI timing and triggering improves performance:Local BusTriggersClockStar BusVXI12 lines8 TTL, 2 ECL10 MHz ECLD-size onlyPXI1
13、3 lines8 TTL10 MHz TTL1 per slotPXI Leverages VXI FeaturesTiming and Triggering Extensions in PXI and VXITiming and Triggering Extensions in PXI and VXIPXI-6070ENI 5102PXI-6533Start ScanRTSI OscillatorMultifunction I/OOscilloscopeDigital I/OTrigger Bus Synchronizes ModulesElectricalElectricalMechani
14、calMechanicalSoftwareSoftwareInstrumentation ExtensionsInstrumentation ExtensionsCompactPCIPCIbusPCIbusEuroCardEuroCardHigh Performance High Performance ConnectorsConnectorsComponentsComponentsSystemsSystemsPXI Architecture SummaryPXI Builds on PXI Builds on CompactPCICompactPCI to define to define
15、complete Measurement and Automation Systemscomplete Measurement and Automation SystemsP PCICII IndustrialndustrialC ComputeromputerMManufacturersanufacturersG Grouproup Governs the core Governs the core CompactPCICompactPCI specification specification Focus is on telecommunications infrastructureFoc
16、us is on telecommunications infrastructure Online product directory contains 100s of Online product directory contains 100s of productsproducts Over 500 company membersOver 500 company membersThe CompactPCI Specification BodyCharter of this group is to:Charter of this group is to: - Promote PXI- Promote PXI - Ensure Interoperability- Ensure Interoperability - Control the PXI Specification- Control the PXI Speci
