Elma VPX高速背板技术指南:实现模块间开放互操作

需积分: 40 21 下载量 79 浏览量 更新于2024-09-08 收藏 3.16MB PDF 举报
VPX(VME-PXI Express)是一种针对高性能嵌入式系统设计的开放标准,由ELMA公司提供技术支持的VPX高速背板技术参考指南详细介绍了这一领域的关键要素。该指南主要关注于Elma的VPX背板产品,旨在确保在多供应商、模块化环境中实现系统级的互操作性。 首先,VPX背板是系统解决方案的一部分,包括在机箱或柜子内的结构,如旋转开关,它们负责连接不同模块并形成一个可扩展的平台。VPX标准支持模块与模块之间的无缝通信,从功能平面(如数据总线、电源和散热管理)的pin分配到整个系统架构的控制管理。它定义了清晰的接口点,以便模块能够与背板以及机箱轻松集成,这在设计阶段就考虑到了灵活性,允许传感器和应用特定的定制扩展。 OpenVPX是一个开放过程,其核心目的是为了促进VPX标准下的系统开发,确保在实验室环境和实际应用中的高效、一致性和可靠性。这个过程的主要目标有: 1. **控制和管理VPX插槽功能分配**:通过标准化的接口和规范,使得开发者可以精确地规划每个槽位的功能,确保硬件组件的合理配置。 2. **高度的互操作性**:OpenVPX允许不同制造商的模块之间无缝协作,降低了系统集成的复杂性,提高了整体系统的性能和稳定性。 3. **定制和扩展性**:虽然强调了标准性,但OpenVPX也预留空间供厂商根据具体应用添加传感器或应用程序特有的特性,保持了技术的灵活性。 4. **成本效益和效率提升**:通过统一的标准和接口,OpenVPX简化了从原型设计到生产部署的过程,节省了时间和资源,同时提高了产品质量的一致性。 在Elma的VPX技术参考指南中,不仅提供了关于背板结构、插槽需求和模块兼容性的具体信息,还包含了部分配置数据和关于如何通过这些标准进行控制和管理的详细说明。因此,使用这些资料,工程师和设计师可以更好地理解和利用VPX技术来构建高效、灵活且兼容的嵌入式系统解决方案。
2010-02-23 上传
Abstract This standard describes VITA 46.0 Advanced Module Format for VMEbus systems, an evolutionary step forward for the provision of high-speed interconnects in harsh-environment applications. Foreword VME has been the de-facto bus standard for Commercial off the Shelf ( COTS ) Circuit Card Assemblies since the 1980’s. VME boards have proven to be remarkably capable of evolving to support newer technologies with innovations such as VME Subsystem Bus, PCI Mezzanine Cards (PMC’s) and VME320. However, advances in technologies, appearing particularly in interconnects, have demonstrated the need for an advance in system development. This advance needs to accommodate high speed interconnect, particularly serial interconnects, and higher power delivery in concert with better heat removal. This draft standard addresses these needs in the context of IEEE 1101 form factor modules. Other specifications may address alternate outlines, such as VITA-48 (Draft). Because electronics miniaturization is driving the plug-in module I/O count, most system interconnects will need:  Multi-gigabit differential technology  Core computing cluster switched fabrics  Serial RapidIO, PCI Express, Advanced Switching Interconnect  Sufficient ports to enable distributed switching or centralized switching The plethora of high-speed interfaces available for tomorrow’s plug-in modules:  Network interfaces (Fibre Channel, 10 GbE XAUI, Infiniband…,)  Digital video (TMDS, PanelLink, OpenLDI…)  Mass storage interface (Fibre Channel, Serial ATA…,)  FPGA-based inter-board connections (e.g. Xilinx RocketIO)  Custom sensor interfaces VITA 46 provides an evolutionary roadmap for VME users:  To leverage the broad spectrum of high-speed interconnect technologies  Backward compatibility with VME bus electrical, software and selected mechanicals  Enables heterogeneous architectures which preserve existing investments in COTS-based systems  Addresses both 3U and 6U form factors with commonality  Harsh environment fit ‘designed-in’ up front in the standard  Rugged air or conduction-cooled form factors  High value placed on rear-panel I/O  High-speed connector survivability/compliance