1X00061H01模块备件

1X00061H01

VMEbus 2EST性能
MVME6100系列是一台采用Tundra Tsi148设计的VMEbus单板计算机（SBC）™ VME总线
提供2EST VMEbus性能的接口芯片。2eSST（双边缘源同步传输）协议
导致VMEbus在大多数情况下以320MB/s的实际带宽运行。2eSST协议已经存在了
一段时间后（试用标准草案于1999年发布，并于2003年作为ANSI标准发布），但
到目前为止，2EST板无法在标准VMEbus背板中工作，因为现有的VMEbus收发器
无法支持所需的VMEbus 2EST信令速度。德州仪器公司开发了新的VMEbus
支持2eSST协议要求的VMEbus信号交换速度的收发器。组合
新的德州仪器VMEbus收发器和Tsi148 VMEbus传统协议支持允许客户：
将MVME6100系列集成到其现有基础设施中，提供向后兼容性，从而
保留对现有VMEbus板、背板、机箱和软件的投资。
平衡性能
MVME6100系列不仅提供更快的VMEbus传输速率；它从以下方面提供了平衡的性能：
处理器、内存子系统、本地总线和I/O子系统。运行速度为1.267 GHz的处理器为：
非常适合数据密集型应用。先进的主机桥，支持133 MHz主机总线和133
MHz DDR存储器总线与处理器很好地匹配。为了确保MVME6100系列能够处理
320MB/s数据速率为2EST，Tsi148 VMEbus接口芯片连接到上的133 MHz PCI-X总线之一
主桥。二条PCI-X总线有两个PMC-X站点，每个站点支持PMC或PMC-X卡，支持：
PCI总线速度从33到100MHz。MVME6100还提供双千兆以太网接口。所有这些加起来
为一组平衡良好、高性能的子系统提供无与伦比的性能。
应用优势：国防和航空
在国防和航空航天市场，MVME6100系列非常适合指挥和控制
使用商业级产品的应用，如海军防护系统、固定地面系统和
侦察机系统。MVME6100系列有助于为这些应用程序提供更高的性能
比以前的VME解决方案能够通过使用1.267GHz处理器提供的性能更高。这与双重
PCI-X总线能够为PMC模块提供100 MHz的速度，VME带宽增加8倍，消除了许多
当今指挥和控制解决方案面临的瓶颈。这些应用程序现在可以利用
密集计算配置中的新PowerPC处理器，无需尝试冷却
多处理器板和管理I/O和VME瓶颈。随着摩托罗拉处理器PMC的加入
（PrPMCs），可以为多处理器解决方案添加其他与PowerPC体系结构兼容的处理器
而不牺牲MVME6100系列的任何优点。

1X00061H01

1X00061H01

VMEbus 2eSST Performance The MVME6100 series is the first VMEbus single-board computer (SBC) designed with the Tundra Tsi148™ VMEbus interface chip offering 2eSST VMEbus performance. The 2eSST (two edge source synchronous transfer) protocol causes the VMEbus to run at a practical bandwidth of 320MB/s in most cases. The 2eSST protocol has existed for some time (the draft standard for trial use was published in 1999 and released as an ANSI standard in 2003), but until now, 2eSST boards would not work in a standard VMEbus backplane because the existing VMEbus transceivers could not support the required VMEbus 2eSST signaling speeds. Texas Instruments has developed new VMEbus transceivers that support the VMEbus signal switching speeds required by the 2eSST protocol. The combination of the new Texas Instruments VMEbus transceivers and the Tsi148 VMEbus legacy protocol support allows customers to integrate the MVME6100 series into their existing infrastructure providing backward compatibility and thereby preserving their investment in existing VMEbus boards, backplanes, chassis and software. Balanced Performance The MVME6100 series provides more than just faster VMEbus transfer rates; it provides balanced performance from the processor, memory subsystem, local buses and I/O subsystems. The processor running at speeds of 1.267 GHz is ideal for data-intensive applications. The state-of-the-art host bridge, with support for a 133 MHz host bus and a 133 MHz DDR memory bus, is well matched to the processor. To ensure that the MVME6100 series can handle the 320MB/s data rates of 2eSST, the Tsi148 VMEbus interface chip is connected to one of the 133 MHz PCI-X buses on the host bridge. The second PCI-X bus has dual PMC-X sites—each site supports PMC or PMC-X cards supporting PCI bus speeds from 33 to 100 MHz. The MVME6100 also offers dual Gigabit Ethernet interfaces. All of this adds up to a set of well-balanced, high-performance subsystems for unparalleled performance. Application Benefits Defense and Aerospace In the defense and aerospace market segment, the MVME6100 series is well suited for command and control applications that utilize commercial grade products such as naval sheltered systems, stationary ground systems, and reconnaissance aircraft systems. The MVME6100 series helps to provide more performance for these applications than previous VME solutions have been able to supply by using the 1.267 GHz processor. This combined with dual PCI-X buses capable of 100 MHz speed for PMC modules and an 8x increase in the VME bandwidth eliminates many of the bottlenecks faced by command and control solutions today. These applications can now take advantage of the latest PowerPC processors in a dense computing configuration without the difficulties of trying to cool multiprocessor boards and managing I/O and VME bottlenecks. With the addition of Motorola’s processor PMCs (PrPMCs), additional PowerPC architecture-compatible processors can be added for a multiprocessor solution without sacrificing any of the MVME6100 series benefits.