公开(公告)号：US20080065924A1

公开(公告)日：2008-03-13

申请号：US11978849

申请日：2007-10-30

申请人： Tim Frodsham ,  Michael Tripp ,  David O'Brien ,  Muraleedhara Navada ,  Naveen Cherukuri ,  Sanjay Dabral ,  David Dunning ,  Theodore Schoenborn

发明人： Tim Frodsham ,  Michael Tripp ,  David O'Brien ,  Muraleedhara Navada ,  Naveen Cherukuri ,  Sanjay Dabral ,  David Dunning ,  Theodore Schoenborn

IPC分类号： G06F1/12

CPC分类号： G06F13/4273 ,  G06F5/06

摘要： A technique for promoting determinism among bus agents within a point-to-point (PtP) network. More particularly, embodiments of the invention relate to techniques to compensate for link latency, data skew, and clock shift within a PtP network of common system interface (CSI) bus agents.

公开(公告)号：US20060020843A1

公开(公告)日：2006-01-26

申请号：US10897225

申请日：2004-07-21

申请人： Tim Frodsham ,  Michael Tripp ,  David O'Brien ,  Muraleedhara Navada ,  Naveen Cherukuri ,  Sanjay Dabral ,  David Dunning ,  Theodore Schoenborn

发明人： Tim Frodsham ,  Michael Tripp ,  David O'Brien ,  Muraleedhara Navada ,  Naveen Cherukuri ,  Sanjay Dabral ,  David Dunning ,  Theodore Schoenborn

IPC分类号： G06F5/00 ,  G06F13/36 ,  G06F1/12 ,  G06F1/04

CPC分类号： G06F13/4273 ,  G06F5/06

摘要： A technique for promoting determinism among bus agents within a point-to-point (PtP) network. More particularly, embodiments of the invention relate to techniques to compensate for link latency, data skew, and clock shift within a PtP network of common system interface (CSI) bus agents.

摘要翻译： 一种促进点对点（PtP）网络中总线代理之间确定性的技术。 更具体地，本发明的实施例涉及补偿公共系统接口（CSI）总线代理的PtP网络内的链路延迟，数据偏移和时钟偏移的技术。

公开(公告)号：US20060168379A1

公开(公告)日：2006-07-27

申请号：US11011301

申请日：2004-12-13

申请人： Tim Frodsham ,  Michael Tripp ,  David O'Brien ,  Navada Muraleedhara ,  Naveen Cherukuri ,  Sanjay Dabral ,  David Dunning ,  Theodore Schoenborn

发明人： Tim Frodsham ,  Michael Tripp ,  David O'Brien ,  Navada Muraleedhara ,  Naveen Cherukuri ,  Sanjay Dabral ,  David Dunning ,  Theodore Schoenborn

IPC分类号： G06F13/00

CPC分类号： G06F1/06 ,  G06F13/362 ,  H04L43/50

摘要： A link latency management for a high-speed point-to-point network (pTp) is described The link latency management facilitates calculating latency of a serial interface by tracking a round trip delay of a header that contains latency information. Therefore, the link latency management facilitates testers, logic analyzers, or test devices to accurately measure link latency for a point-to-point architecture utilizing a serial interface.

摘要翻译： 描述了用于高速点对点网络（pTp）的链路延迟管理。链路延迟管理有助于通过跟踪包含延迟信息的报头的往返延迟来计算串行接口的延迟。 因此，链路延迟管理便于测试人员，逻辑分析仪或测试设备使用串行接口准确测量点对点架构的链路延迟。

公开(公告)号：US20050262336A1

公开(公告)日：2005-11-24

申请号：US10850783

申请日：2004-05-21

申请人： Naveen Cherukuri ,  Sanjay Dabral ,  David Dunning ,  Tim Frodsham ,  Theodore Schoenborn

发明人： Naveen Cherukuri ,  Sanjay Dabral ,  David Dunning ,  Tim Frodsham ,  Theodore Schoenborn

IPC分类号： G06F15/177 ,  H04L29/08

CPC分类号： H04L69/32

摘要： A method for effecting an in-band reset of the physical layers of two agents interconnected through a link-based interconnection scheme. In accordance with one embodiment of the invention, a first of the two agents ceases its forwarded clock to initiate the in-band reset. Upon realization of the cessation, a second agent ceases its forwarded clock and proceeds to a reset state. The first agent then proceeds to a reset state. Subsequently, after waiting a specified period of time, both agents proceed with a re-initialization of the physical layer. In accordance with one embodiment of the invention, the re-initialization of the physical layer is effected without impacting other layers of the interconnection hierarchy.

摘要翻译： 一种用于实现通过基于链路的互连方案互联的两个代理的物理层的带内复位的方法。 根据本发明的一个实施例，两个代理中的第一个停止其转发的时钟以启动带内复位。 在停止实现时，第二代理程序停止其转发的时钟并进入复位状态。 然后第一个代理进入复位状态。 随后，等待指定的时间段后，两个代理进行物理层的重新初始化。 根据本发明的一个实施例，实现物理层的重新初始化而不影响互连层次结构的其他层。

公开(公告)号：US20060020861A1

公开(公告)日：2006-01-26

申请号：US10897596

申请日：2004-07-23

申请人： Tim Frodsham ,  Naveen Cherukuri ,  Sanjay Dabral ,  David Dunning ,  Theodore Schoenborn ,  Lakshminarayan Krishnamurty

发明人： Tim Frodsham ,  Naveen Cherukuri ,  Sanjay Dabral ,  David Dunning ,  Theodore Schoenborn ,  Lakshminarayan Krishnamurty

IPC分类号： G01R31/28

CPC分类号： G01R31/31716

摘要： A loopback test to test a communication link for a layered interface where in a master agent programs the electrical parameters for the slave agent, such as, the offset, timing, and current compensation with a loopback control register. The slave and master agent to support an entry into the loopback test based on detection of a header within a packet. The slave and master agent to support exit out of the loopback test based on whether the loop count is finite.

摘要翻译： 用于测试分层接口的通信链路的环回测试，其中主代理程序使用环回控制寄存器编程用于从属代理的电参数，例如偏移，定时和电流补偿。 从属和主代理支持根据检测到报文头中的报文进入环回测试。 根据循环计数是否有限，从站和主代理程序支持退出环回测试。

公开(公告)号：US20060005092A1

公开(公告)日：2006-01-05

申请号：US10882966

申请日：2004-06-30

申请人： Tim Frodsham ,  Lakshminarayan Krishnamurty ,  Naveen Cherukuri ,  Sanjay Dabral ,  David Dunning ,  Theodore Schoenborn

发明人： Tim Frodsham ,  Lakshminarayan Krishnamurty ,  Naveen Cherukuri ,  Sanjay Dabral ,  David Dunning ,  Theodore Schoenborn

IPC分类号： G01R31/28

CPC分类号： G06F11/27

摘要： A software self test engine is executed from a cache of a processor. The software self test engine is executed using an execution engine of the processor to perform a physical layer self test. The physical layer self test is performed by transmitting a test vector from the execution engine under control of the self test engine to an input/output (“I/O”) unit of the processor along a datapath coupling the execution engine to the I/O unit. The test vector is transmitted along a loop back path including the I/O unit and the datapath to test a hardware device along the loop back path.

摘要翻译： 从处理器的缓存执行软件自检引擎。 使用处理器的执行引擎执行软件自检引擎，以执行物理层自检。 通过在自检引擎的控制下将来自执行引擎的测试向量发送到处理器的输入/输出（“I / O”）单元，沿着将执行引擎耦合到I / O的数据通路执行物理层自检， O单位。 测试向量沿着包括I / O单元和数据通路的环回路径传输，以沿着循环路径测试硬件设备。

公开(公告)号：US20050286567A1

公开(公告)日：2005-12-29

申请号：US10877355

申请日：2004-06-25

申请人： Naveen Cherukuri ,  Sanjay Dabral ,  David Dunning ,  Tim Frodsham ,  Theodore Schoenborn ,  Santanu Chaudhuri

发明人： Naveen Cherukuri ,  Sanjay Dabral ,  David Dunning ,  Tim Frodsham ,  Theodore Schoenborn ,  Santanu Chaudhuri

IPC分类号： H04J3/06 ,  H04L7/033 ,  H04L25/14

CPC分类号： H04L25/14 ,  H04L7/0025 ,  H04L7/005 ,  H04L7/033

摘要： A method and apparatus for retraining skew compensation in an interface is presented. In one embodiment, a retraining interval is determined, and counters in the transmitting agent and receiving agent count up until the retraining interval is reached. A tracking unit used to select one of several interpolated clocks may then be powered up, and a special retraining phit may be sent across the interface. During the retraining process, the transfer of flits into and out of the flow-control mechanism may be inhibited. When the retraining process is finished, the tracking unit may be powered down.

摘要翻译： 提出了一种用于在接口中重新训练偏斜补偿的方法和装置。 在一个实施例中，确定再培训间隔，并且发送代理和接收代理中的计数器向上计数直到达到再培训间隔。 然后，用于选择几个内插时钟之一的跟踪单元可以被加电，并且可以跨接口发送特殊的再培养phit。 在再培训过程中，可以抑制流入和流出控制机构的流动。 当再培训过程完成时，跟踪单元可能被关闭。

公开(公告)号：US20080091963A1

公开(公告)日：2008-04-17

申请号：US11950292

申请日：2007-12-04

申请人： Naveen Cherukuri ,  Jeffrey Wilcox ,  Sanjay Dabral ,  Phanindra Mannava ,  Aaron Spink ,  David Dunning ,  Tim Frodsham ,  Theodore Schoenborn

发明人： Naveen Cherukuri ,  Jeffrey Wilcox ,  Sanjay Dabral ,  Phanindra Mannava ,  Aaron Spink ,  David Dunning ,  Tim Frodsham ,  Theodore Schoenborn

IPC分类号： G06F1/32

CPC分类号： G06F1/3209 ,  G06F1/3253 ,  H04L12/12 ,  Y02D10/151 ,  Y02D50/20 ,  Y02D50/40

摘要： Disclosed are embodiments of a method, apparatus and system for a low power state for a point-to-point link. During the low power state, the signal on both conductors of a differential transmit pair are driven to electrical idle. Analog activity detectors are enabled during the low power state and are disabled during normal power state. Exit from the low power state does not require a physical layer re-initialization sequence. Other embodiments are also described and claimed.

摘要翻译： 公开了用于点对点链路的低功率状态的方法，装置和系统的实施例。 在低功率状态期间，差分发送对的两个导体上的信号被驱动到电气空闲。 模拟活动检测器在低功率状态期间被使能，并且在正常功率状态期间被禁用。 退出低功耗状态不需要物理层重新初始化的顺序。 还描述和要求保护其他实施例。

公开(公告)号：US20080077814A1

公开(公告)日：2008-03-27

申请号：US11949770

申请日：2007-12-04

申请人： Naveen Cherukuri ,  Jeffrey Wilcox ,  Sanjay Dabral ,  Phanindra Mannava ,  Aaron Spink ,  David Dunning ,  Tim Frodsham ,  Theodore Schoenborn

发明人： Naveen Cherukuri ,  Jeffrey Wilcox ,  Sanjay Dabral ,  Phanindra Mannava ,  Aaron Spink ,  David Dunning ,  Tim Frodsham ,  Theodore Schoenborn

IPC分类号： G06F1/32

CPC分类号： G06F1/3209 ,  G06F1/3253 ,  H04L12/12 ,  Y02D10/151 ,  Y02D50/20 ,  Y02D50/40

摘要： Disclosed are embodiments of a method, apparatus and system for a low power state for a point-to-point link. During the low power state, the signal on both conductors of a differential transmit pair are driven to electrical idle. Analog activity detectors are enabled during the low power state and are disabled during normal power state. Exit from the low power state does not require a physical layer re-initialization sequence. Other embodiments are also described and claimed.

公开(公告)号：US20060041696A1

公开(公告)日：2006-02-23

申请号：US10850810

申请日：2004-05-21

申请人： Naveen Cherukuri ,  Sanjay Dabral ,  David Dunning ,  Tim Frodsham ,  Theodore Schoenborn

发明人： Naveen Cherukuri ,  Sanjay Dabral ,  David Dunning ,  Tim Frodsham ,  Theodore Schoenborn

IPC分类号： G06F13/00

CPC分类号： G06F13/4278

摘要： Embodiments of the invention provide a state machine for initializing the physical layer of a point-to-point link-based interconnection. Embodiments of the invention use explicit handshakes between the interconnected agent to advance states and provide a variety of optional features for flexibility and efficiency.

摘要翻译： 本发明的实施例提供了一种用于初始化基于点对点链路的互连的物理层的状态机。 本发明的实施例使用互连的代理之间的显式握手来促进状态并且提供用于灵活性和效率的各种可选特征。