HIMA F7553 984755302中文PDF说明书模块卡件自动化PLC/DCS工控设备

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产品标题: HIMA F7553 984755302中文PDF说明书模块卡件自动化PLC/DCS工控设备

型号： HIMA F7553 984755302

品牌：HIMA

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HIMA F7553 984755302

通过简单地将VMIVME-5565连接到VMEbus并交叉其字节通道，无法解决该问题。例如，VMIVME-5565使用D0-D7将字节传输到地址$00，而VMEbus要求使用D8-D15。出于这个原因，VMIVME-5565 PCI到VMEbus接口中加入了特殊硬件，以便于在不同情况下进行不同类型的字节交换。Endian转换硬件Universe II芯片在PCI和VMEbus界面之间执行地址不变转换。地址不变映射或“非端转换”模式保持两个接口之间的字节顺序（即，PCI端以小端模式产生的数据将保持在接口VMEbus端的小端模式）。然而，VMIVME-5565 PCI到VMEbus接口具有外部端序转换逻辑，允许应用程序执行独立的主/从硬件端序转换。本章介绍了板的安装和配置。本章介绍了电缆配置、跳线/开关配置和电路板布局

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The problem cannot be solved by simply connecting the VMIVME-5565 to the VMEbus with its byte lanes crossed. For example, the VMIVME-5565 uses D0-D7 to transfer a byte to address $00, while the VMEbus requires D8-D15 be used. For this reason, special hardware has been incorporated into the VMIVME-5565 PCI-to-VMEbus interface to facilitate different kinds of byte swapping for varying circumstances.Endian Conversion Hardware The Universe II chip performs Address Invariant translation between the PCI and VMEbus interfaces. Address Invariant mapping or “Non-endian conversion” mode maintains the byte ordering between the two interfaces (i.e. data originating in Little Endian mode on the PCI side will remain in Little Endian mode on the VMEbus side of the interface). However, the VMIVME-5565 PCI-to-VMEbus interface has external endian conversion logic which allows the application to perform independent master/slave hardware endian conversion.Introduction This chapter describes the installation and configuration of the board. Cable configuration, jumper/switch configuration and board layout are illustrated in this chapter

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