公开(公告)号：US06363439B1

公开(公告)日：2002-03-26

申请号：US09206515

申请日：1998-12-07

申请人： John D. Battles ,  Paul B. Rawlins ,  Robert Allan Lester ,  Patrick L. Ferguson

发明人： John D. Battles ,  Paul B. Rawlins ,  Robert Allan Lester ,  Patrick L. Ferguson

IPC分类号： G06F1314

CPC分类号： G06F13/4273 ,  G06F13/4004

摘要： A point-to-point serial communication link between a system interface unit and a peripheral bus interface unit is provide. The system bus interface unit may interface between a CPU bus and a peripheral bus, such as the PCI bus, and may be referred to as a north bridge. The system interface unit may also interface to main memory and to an advanced graphics port. The peripheral bus interface unit may interface between a first peripheral bus, such as the PCI bus, and a second peripheral bus, such as an ISA bus, and may be referred to as a south bridge. The serial communication link between the system interface unit and the bus interface unit may be a one wire serial bus that uses a bus clock from the first peripheral bus as a timing reference. This clock may be the PCI clock. The serial communication link may use a single pin on the system interface unit and a single pin on the bus interface unit to transfer commands between the interface units. A pull-up device may be provided on the serial communication link to maintain a high voltage level on the link when it is not being driven by one of the bus interface units. The north bridge and south bridge may alternate between sending and receiving commands across the

摘要翻译： 提供系统接口单元和外围总线接口单元之间的点对点串行通信链路。 系统总线接口单元可以在CPU总线和诸如PCI总线的外围总线之间进行接口，并且可以被称为北桥。 系统接口单元也可以连接到主存储器和高级图形端口。 外围总线接口单元可以在诸如PCI总线的第一外围总线和诸如ISA总线的第二外围总线之间进行接口，并且可以被称为南桥。 系统接口单元和总线接口单元之间的串行通信链路可以是使用来自第一外设总线的总线时钟作为定时参考的单线串行总线。 该时钟可能是PCI时钟。 串行通信链路可以使用系统接口单元上的单个引脚和总线接口单元上的单个引脚在接口单元之间传输命令。 可以在串行通信链路上提供上拉设备，以便当其不被总线接口单元中的一个驱动时，在链路上保持高电压电平。 北桥和南桥可以在发送和接收命令之间交替

公开(公告)号：US6065121A

公开(公告)日：2000-05-16

申请号：US52390

申请日：1998-03-31

申请人： Louis B. Hobson ,  John D. Battles

发明人： Louis B. Hobson ,  John D. Battles

IPC分类号： G06F1/32

CPC分类号： G06F1/3203

摘要： An advanced configuration and power interface operating system transparent method to control the wake-to-sleep and sleep-to-wake transitions includes: detecting a sleep enable command; temporarily blocking completion of the sleep enable command; generating an interrupt; configuring an input-output device; and completing the sleep enable command. The sleep enable command can be a write command to an advanced configuration and power interface sleep enable data storage unit. The generated interrupt can be a system management interrupt that invokes a basic input-output device configuration program.

摘要翻译： 用于控制唤醒睡眠和睡眠到唤醒转换的高级配置和电源接口操作系统透明方法包括：检测睡眠使能命令; 临时阻止完成睡眠启用命令; 产生中断; 配置输入输出设备; 并完成sleep enable命令。 sleep enable命令可以是高级配置和电源接口休眠启用数据存储单元的写命令。 产生的中断可以是调用基本输入输出设备配置程序的系统管理中断。