公开(公告)号：US06438639B1

公开(公告)日：2002-08-20

申请号：US08703496

申请日：1996-08-27

申请人： Brian E. Bakke ,  Ronald L. Billau ,  Lee D. Cleveland ,  William S. Gartmann

发明人： Brian E. Bakke ,  Ronald L. Billau ,  Lee D. Cleveland ,  William S. Gartmann

IPC分类号： G06F1338

CPC分类号： G06F13/4221 ,  G06F2213/0036

摘要： A method and apparatus that prevents data corruption and power supply failure caused by device connection transition on an active SCSI bus is provided. A bus initiator pauses communication on the SCSI bus such that only communication by the bus initiator is allowed over the data communication bus. All other communication between peripheral devices attached to the data communication bus is paused. A shutdown signal from the bus initiator is transmitted over the data communication bus to a power controller, which eliminates power to a device slot corresponding to the received shutdown signal. After a connection transition of an electrical device in the device slot, a power reset signal is transmitted from the bus initiator over the data communication bus to the power controller, which then restores power to the device slot upon receiving the reset power signal. The bus initiator then releases the data communication bus from being paused such that all communication on the data communication bus by peripheral devices is allowed.

摘要翻译： 提供了一种防止由活动SCSI总线上的设备连接转换引起的数据损坏和电源故障的方法和装置。 总线启动器暂停SCSI总线上的通信，使得仅允许通过总线发起器的通信通过数据通信总线。 附加到数据通信总线的外围设备之间的所有其他通信都被暂停。 来自总线启动器的关闭信号通过数据通信总线发送到功率控制器，该功率控制器消除了对应于接收到的关闭信号的设备插槽的电力。 在设备插槽中的电气设备的连接转换之后，电力复位信号通过数据通信总线从总线启动器发送到功率控制器，功率控制器在接收到复位功率信号时恢复到设备插槽的电源。 总线启动器然后释放数据通信总线暂停，使得允许外围设备在数据通信总线上的所有通信。