ISO/IEC 15205:2000 S母线-芯片和模块互连母线

标准编号：ISO/IEC 15205:2000

中文名称：S母线-芯片和模块互连母线

英文名称：SBus — Chip and module interconnect bus

发布日期：2000-06

标准范围

本标准描述了32或64位宽度的输入/输出扩展总线。SBU设计用于需要少量扩展端口的系统。SBus卡可以连接到安装在主板上的标准Sbus连接器。SBus设备也可以直接连接到系统主板上的SBU。尺寸SBus卡的尺寸为83.8毫米×146.7毫米，适合小型计算机使用广泛使用高度集成电路的系统。SBus卡是专门设计的作为夹层卡安装在与系统主板平行的平面上。他们是旨在通过网络为计算机系统外部的设备提供连接裸露的后面板。在Futurebus+、VMEbus、台式计算机、，以及类似的应用。SBU有能力以高达100%的速率传输数据168 Mbytes/s，具体取决于所选的实施选项。SBus卡可以作为总线上的主控卡，提供所有虚拟地址信息以及要传输的数据，或者它们可以作为总线上的从属设备，提供数据根据其他SBU主机的要求进行传输。SBus的主人数据传输由一个仲裁过程选择，该仲裁过程由一个SBus控制器管理SBus。SBus控制器提供虚拟到物理地址转换服务。

An input/output expansion bus with a 32- or 64-bit width is described in this standard.The SBus is designed for systems requiring a small number expansion ports. SBus Cardsmay be connected to a standard Sbus Connector mounted on the motherboard. SBus Devicesmay also be attached to the SBus directly on the system's motherboard. The dimensions ofthe SBus Card are 83,8 mm by 146,7 mm, making the cards appropriate for small computersystems that make extensive use of highly integrated circuits. The SBus Cards are designedto be installed in a plane parallel to the system's motherboard as mezzanine cards. They aredesigned to provide connections for devices external to the computer system through anexposed back panel. The form factor is useful in Futurebus+, VMEbus, desktop computers,and similar applications. The SBus has the capability of transferring data at rates up to168 Mbytes/s, depending on the implementation options selected.SBus Cards may either serve as Masters on the bus, providing all virtual address informationas well as the data to be transferred, or they may serve as Slaves on the bus, providing datatransfer according to the requirements of some other SBus Master. The SBus Master for adata transfer is selected by an arbitration process managed by the single SBus Controller onthe SBus. The SBus Controller provides a virtual to physical address translation service.

标准预览图