| 术语 | bus signals |
| 释义 | bus signals 总线信号;［汇流排信号］ 50 to 150 signals that current bus architectures carry. They can be grouped into four broad categories. (a) Address and data lines have signals that are used by the processor to indicate the location it wants to communicate with, and these lines are used to carry data between the processor and the other boards in the system.(b) Control, status, and interrupt lines use signals that coordinate the operation of all system components and these lines are most critical to a bus design. (c) Power lines distribute power to the boards in the system. The number and range of voltage signals determine the kinds of peripheral devices and the memories that can be used in the system. (d) Spares are usually signal lines that are included to enable future expansion or special interboard communications. 指总线上传送的50～150个信号。这些信号可分为四大类:(1) 地址线和数据线上的信号, 指出处理器要访问的部件的地址,载有要交换的信息。(2) 控制线、状态线和中断线信号, 使系统所有部件的操作相配合,是总线设计的关键。(3) 电源线,向系统各部件提供电能, 其引线条数和供电电压决定着系统可使用的外围设备和存储器的种类。(4) 备用线,用于 系统扩展,或在插件板之间进行通信。 |
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