公开(公告)号：EP0820022B1

公开(公告)日：2004-09-29

申请号：EP97305240.0

申请日：1997-07-15

Applicant: Compaq Computer Corporation

Inventor： Lin, Richard S. ,  Maguire, David J. ,  Edwards, James R. ,  Delisle, David J.

IPC: G06F13/40

CPC classification number: G06F13/4081 ,  G06F13/36

公开(公告)号：EP0820022A3

公开(公告)日：1999-02-03

申请号：EP97305240.0

申请日：1997-07-15

Applicant: Compaq Computer Corporation

Inventor： Lin, Richard S. ,  Maguire, David J. ,  Edwards, James R. ,  Delisle, David J.

IPC: G06F13/40

CPC classification number: G06F13/4081 ,  G06F13/36

Abstract: A method for hot docking and hot undocking a portable computer and a docking station. The portable computer and docking station are physically coupled via a shared PCI bus and an expansion connector. Varying length pins in the expansion connector generate docking and undocking handshaking signals used by microcontrollers in the portable computer and docking station. The portable computer and docking station are functionally connected via low on-resistance switches located in the portable computer. Following a docking event, closure of the switches connects the portion of the shared PCI bus in the docking station with the PCI bus in the portable computer. When the switches are open, the PCI busses are functionally isolated. Both the portable computer and the docking station also include a local arbiter for arbitrating and granting bus control requests from devices coupled to the shared PCI bus. These local arbiters may be placed into an idled state by either the operating system (through system BIOS) or by the microcontrollers. The arbiters are idled during docking and undocking events in order to inhibit bus cycles on the PCI bus, thereby preventing cycles from being lost. Following completion of a hot docking or undocking event, Plug-and-Play system reconfiguration is carried out so that all system resources may be recognized and properly utilized by the operating system.

公开(公告)号：EP0820022A2

公开(公告)日：1998-01-21

申请号：EP97305240.0

申请日：1997-07-15

Applicant: Compaq Computer Corporation

Inventor： Lin, Richard S. ,  Maguire, David J. ,  Edwards, James R. ,  Delisle, David J.

IPC: G06F13/40

CPC classification number: G06F13/4081 ,  G06F13/36

Abstract: A method for hot docking and hot undocking a portable computer and a docking station. The portable computer and docking station are physically coupled via a shared PCI bus and an expansion connector. Varying length pins in the expansion connector generate docking and undocking handshaking signals used by microcontrollers in the portable computer and docking station. The portable computer and docking station are functionally connected via low on-resistance switches located in the portable computer. Following a docking event, closure of the switches connects the portion of the shared PCI bus in the docking station with the PCI bus in the portable computer. When the switches are open, the PCI busses are functionally isolated. Both the portable computer and the docking station also include a local arbiter for arbitrating and granting bus control requests from devices coupled to the shared PCI bus. These local arbiters may be placed into an idled state by either the operating system (through system BIOS) or by the microcontrollers. The arbiters are idled during docking and undocking events in order to inhibit bus cycles on the PCI bus, thereby preventing cycles from being lost. Following completion of a hot docking or undocking event, Plug-and-Play system reconfiguration is carried out so that all system resources may be recognized and properly utilized by the operating system.

Abstract translation: 便携式计算机和对接站的热对接和热脱离的方法。 便携式计算机和坞站通过共享PCI总线和扩展连接器物理耦合。 扩展连接器中的不同长度的针脚可以在便携式计算机和扩展坞中产生微控制器使用的对接和脱离握手信号。 便携式计算机和坞站通过位于便携式计算机中的低导通电阻开关功能连接。 在对接事件之后，开关的闭合将坞站中的共享PCI总线的一部分与便携式计算机中的PCI总线相连接。 当交换机打开时，PCI总线功能隔离。 便携式计算机和对接站也包括本地仲裁器，用于仲裁并授予来自耦合到共享PCI总线的设备的总线控制请求。 这些本地仲裁器可能由操作系统（通过系统BIOS）或微控制器置于空闲状态。 仲裁器在对接和脱离事件期间空闲，以阻止PCI总线上的总线周期，从而防止周期丢失。 在完成热对接或脱离事件之后，进行即插即用系统重新配置，以便操作系统可以识别和正确使用所有的系统资源。