Method of functionality testing for a ring oscillator
    1.
    发明申请
    Method of functionality testing for a ring oscillator 失效
    环形振荡器的功能测试方法

    公开(公告)号:US20070040620A1

    公开(公告)日:2007-02-22

    申请号:US11204408

    申请日:2005-08-16

    IPC分类号: H03K3/03

    CPC分类号: H03K3/0315 H03K5/133

    摘要: A method and apparatus is provided for testing the logic functionality and electrical continuity of a ring oscillator comprising an odd number of inverters connected to form a closed loop. In the method and apparatus, a known value is forced through the ring oscillator, to test the complete circuit path thereof. Thus, a low overhead deterministic test of the functionality of the ring oscillator is provided. In a useful embodiment of the invention, a method is provided for testing functionality and electrical continuity in a ring oscillator, wherein a first test device is inserted between the input of a first inverter and the output of an adjacent second inverter. The first test device is then operated to apply first and second test bits as input test signals to the first inverter input. The embodiment further comprises detecting the response to the applied first and second test bit signals at the output of the second inverter, and using the detected responses in providing an evaluation of functionality of the ring oscillator.

    摘要翻译: 提供了一种用于测试环形振荡器的逻辑功能和电连续性的方法和装置,该环形振荡器包括连接形成闭环的奇数个反相器。 在该方法和装置中,通过环形振荡器强制已知的值,以测试其完整的电路路径。 因此,提供了环形振荡器的功能的低开销确定性测试。 在本发明的有用实施例中,提供了一种用于测试环形振荡器中的功能和电连续性的方法,其中第一测试装置插入在第一反相器的输入端和相邻的第二反相器的输出之间。 然后操作第一测试装置以将第一和第二测试位作为输入测试信号施加到第一反相器输入。 该实施例还包括检测在第二反相器的输出处对所施加的第一和第二测试位信号的响应,并且使用检测到的响应来提供环形振荡器的功能性的评估。

    Apparatus for controlling rounding modes in single instruction multiple data (SIMD) floating-point units
    2.
    发明申请
    Apparatus for controlling rounding modes in single instruction multiple data (SIMD) floating-point units 失效
    用于在单指令多数据(SIMD)浮点单元中控制舍入模式的装置

    公开(公告)号:US20060101107A1

    公开(公告)日:2006-05-11

    申请号:US10982110

    申请日:2004-11-05

    IPC分类号: G06F7/38

    摘要: An apparatus for controlling rounding modes in a single instruction multiple data (SIMD) floating-point unit is disclosed. The SIMD floating-point unit includes a floating-point status-and-control register (FPSCR) having a first rounding mode bit field and a second rounding mode bit field. The SIMD floating-point unit also includes means for generating a first slice and a second slice. During a floating-point operation, the SIMD floating-point unit concurrently performs a first rounding operation on the first slice and a second rounding operation on the second slice according to a bit in the first rounding mode bit field and a bit in the second rounding mode bit field within the FPSCR, respectively.

    摘要翻译: 公开了一种用于在单指令多数据(SIMD)浮点单元中控制舍入模式的装置。 SIMD浮点单元包括具有第一舍入模式位字段和第二舍入模式位字段的浮点状态和控制寄存器(FPSCR)。 SIMD浮点单元还包括用于生成第一切片和第二切片的装置。 在浮点运算期间,SIMD浮点单元根据第一舍入模式位字段中的位并且在第二舍入中的位同时对第一切片进行第一舍入运算,并对第二切片进行第二舍入运算 FPSCR中的模式位字段。

    Hierarchical management for multiprocessor system with real-time attributes
    3.
    发明申请
    Hierarchical management for multiprocessor system with real-time attributes 失效
    具有实时属性的多处理器系统的分层管理

    公开(公告)号:US20060031836A1

    公开(公告)日:2006-02-09

    申请号:US10912481

    申请日:2004-08-05

    IPC分类号: G06F9/46

    CPC分类号: G06F1/3203

    摘要: The present invention provides for controlling the power consumption of an element. A first power control command is issued by software for the element. It is determined if the power control command corresponds to an allowable power control state for that element as defined by the hardware. If the power control command is not an allowable power control state for that element, the hardware sets the power control at a higher level than the power control state issued by the software. The software is real time software, and the software also sets minimally acceptable activity control states. A hierarchy of power consumption is defined for different elements of a chip by software, which provides the minimum level of power consumption by any element or sub-element on a chip.

    摘要翻译: 本发明提供用于控制元件的功耗。 第一个功率控制命令由该元件的软件发出。 确定功率控制命令是否对应于由硬件定义的该元件的容许功率控制状态。 如果功率控制命令不是该元件的允许功率控制状态,则硬件将功率控制设置在比由软件发出的功率控制状态更高的水平。 该软件是实时软件,软件还设置了最低限度可接受的活动控制状态。 通过软件为芯片的不同元件定义功耗层级,其通过芯片上的任何元件或子元件提供最低功耗水平。

    System and method for using a plurality of heterogeneous processors in a common computer system
    4.
    发明申请
    System and method for using a plurality of heterogeneous processors in a common computer system 审中-公开
    在普通计算机系统中使用多个异构处理器的系统和方法

    公开(公告)号:US20050268048A1

    公开(公告)日:2005-12-01

    申请号:US11171757

    申请日:2005-06-30

    摘要: A system for using a plurality of heterogeneous processors in a common computer system is presented. Each processor type in the heterogeneous group handles a particular instruction set. The processors share a common memory using a common bus. In one embodiment, one of the processor types accesses the memory using DMA instructions. In another embodiment, a cache for each type of processor is stored in the common memory pool. In one embodiment, one or more PowerPC processors shares a memory with one or more Synergistic Processing Complex (SPC). A common table is used to track and maintain memory for the various processors.

    摘要翻译: 提出了一种在普通计算机系统中使用多个异构处理器的系统。 异构组中的每个处理器类型处理特定的指令集。 处理器使用公共总线共享共享内存。 在一个实施例中,处理器类型之一使用DMA指令访问存储器。 在另一个实施例中,用于每种类型的处理器的高速缓存存储在公共存储器池中。 在一个实施例中,一个或多个PowerPC处理器与一个或多个协同处理复合体(SPC)共享存储器。 通用表用于跟踪和维护各种处理器的内存。

    Method and apparatus for coherent memory structure of heterogeneous processor systems
    5.
    发明申请
    Method and apparatus for coherent memory structure of heterogeneous processor systems 失效
    异构处理器系统的相干存储器结构的方法和装置

    公开(公告)号:US20050080998A1

    公开(公告)日:2005-04-14

    申请号:US10682386

    申请日:2003-10-09

    IPC分类号: G06F12/08

    CPC分类号: G06F12/0835

    摘要: Disclosed is a coherent cache system that operates in conjunction with non-homogeneous processing units. A set of processing units of a first configuration has conventional cache and directly accesses common or shared system physical and virtual address memory through the use of a conventional MMU (Memory Management Unit). Additional processors of a different configuration and/or other devices that need to access system memory are configured to store accessed data in compatible caches. Each of the caches is compatible with a given protocol coherent memory management bus interspersed between the caches and the system memory.

    摘要翻译: 公开了与非均匀处理单元结合操作的一致的缓存系统。 一组第一配置的处理单元具有常规高速缓存,并且通过使用常规MMU(存储器管理单元)直接访问公用或共享系统物理和虚拟地址存储器。 需要访问系统存储器的不同配置和/或其他设备的其他处理器被配置为将访问的数据存储在兼容的高速缓存中。 每个缓存与散列在高速缓存和系统存储器之间的给定协议相干存储器管理总线兼容。

    Security architecture for system on chip
    6.
    发明申请
    Security architecture for system on chip 有权
    片上系统的安全架构

    公开(公告)号:US20050021944A1

    公开(公告)日:2005-01-27

    申请号:US10601374

    申请日:2003-06-23

    摘要: The present invention provides for authenticating code and/or data and providing a protected environment for execution. The present invention provides for dynamically partitioning and un-partitioning a local store for the authentication of code or data. The local store is partitioned into an isolated and non-isolated section. Code or data is loaded into the isolated section. The code or data is authenticated in the isolated section of the local store. After authentication, the code is executed. After execution, the memory within the isolated region of the attached processor unit is erased, and the attached processor unit de-partitions the isolated section within the local store.

    摘要翻译: 本发明提供了验证代码和/或数据并提供受保护的环境以供执行。 本发明提供了用于对代码或数据的认证的动态分区和分区本地存储。 本地商店被划分成一个隔离和非隔离的部分。 代码或数据被加载到隔离的部分。 代码或数据在本地存储的隔离部分进行身份验证。 认证后,执行代码。 在执行之后,附着的处理器单元的隔离区域内的存储器被擦除,并且附加的处理器单元对本地存储器内的隔离部分进行分区。

    Maintaining Circuit Delay Characteristics During Power Management Mode
    7.
    发明申请
    Maintaining Circuit Delay Characteristics During Power Management Mode 审中-公开
    在电源管理模式下维护电路延迟特性

    公开(公告)号:US20090121747A1

    公开(公告)日:2009-05-14

    申请号:US11938347

    申请日:2007-11-12

    IPC分类号: H03K3/017

    CPC分类号: H03K5/1565 H03K19/0008

    摘要: A system and method for maintaining circuit delay characteristics during power management mode. The method for maintaining circuit delay characteristics during power management mode continually toggles the clock distribution circuits at a frequency sufficiently low that it does not significantly impact chip power dissipation. The clock frequency used to toggle the clock distribution circuits is high enough to minimize the asymmetrical stress on the clock buffer transistors so that both P and N device characteristics equally change over time.

    摘要翻译: 一种用于在电源管理模式下维持电路延迟特性的系统和方法。 用于在电源管理模式期间维持电路延迟特性的方法连续地将时钟分配电路切换到足够低的频率,使其不会显着影响芯片功率耗散。 用于切换时钟分配电路的时钟频率足够高以最小化时钟缓冲晶体管上的不对称应力,以便P和N器件特性随时间均匀变化。

    Oscillator array with row and column control
    8.
    发明申请
    Oscillator array with row and column control 有权
    具有行和列控制的振荡器阵列

    公开(公告)号:US20060220753A1

    公开(公告)日:2006-10-05

    申请号:US11095895

    申请日:2005-03-31

    IPC分类号: H03K3/03

    CPC分类号: G06F7/588 H03K3/0315 H03K3/84

    摘要: A circuit topology which can be used to create an array of individually tuned oscillators operating at different frequencies determined by common control inputs and an easily managed variation in design dimensions of several components is provided. An array of oscillators are provided arranged in columns and rows. Each oscillator in a column is unique from the other oscillators in the column based on number of stages in the oscillator and fanout so that each oscillator will operate at a unique frequency. Oscillators of different columns within the array may differ by a common setting of the selects to these oscillators and the physical ordering of the oscillators in the column to further reduce the possibility of injection locking. A base delay cell provides selects to each column of oscillators such that each column may be programmed to operate at a different frequency from its neighbors.

    摘要翻译: 提供了一种电路拓扑结构,可用于创建由通用控制输入确定的不同频率运行的单独调谐的振荡器阵列,以及易于管理的多个组件的设计尺寸变化。 提供了一列列和列排列的振荡器阵列。 列中的每个振荡器都基于列中的其他振荡器是独特的,基于振荡器和扇出的级数,使得每个振荡器将以唯一的频率工作。 阵列中不同列的振荡器可能会通过对这些振荡器的选择的共同设置以及列中的振荡器的物理顺序而不同,以进一步降低注入锁定的可能性。 基本延迟单元为每列振荡器提供选择,使得每列可被编程为以与其邻居不同的频率工作。

    System and method for hiding memory latency
    10.
    发明申请
    System and method for hiding memory latency 审中-公开
    隐藏内存延迟的系统和方法

    公开(公告)号:US20060080661A1

    公开(公告)日:2006-04-13

    申请号:US10960609

    申请日:2004-10-07

    IPC分类号: G06F9/46

    CPC分类号: G06F9/322 G06F8/41 G06F9/3851

    摘要: A System and method for hiding memory latency in a multi-thread environment is presented. Branch Indirect and Set Link (BISL) and/or Branch Indirect and Set Link if External Data (BISLED) instructions are placed in thread code during compilation at instances that correspond to a prolonged instruction. A prolonged instruction is an instruction that instigates latency in a computer system, such as a DMA instruction. When a first thread encounters a BISL or a BISLED instruction, the first thread passes control to a second thread while the first thread's prolonged instruction executes. In turn, the computer system masks the latency of the first thread's prolonged instruction. The system can be optimized based on the memory latency by creating more threads and further dividing a register pool amongst the threads to further hide memory latency in operations that are highly memory bound.

    摘要翻译: 提出了一种在多线程环境中隐藏内存延迟的系统和方法。 分支间接和设置链接(BISL)和/或分支间接和设置链接,如果外部数据(BISLED)指令在对应于延长的指令的实例的编译期间被放置在线程代码中。 延长的指令是指示计算机系统中的延迟,例如DMA指令。 当第一个线程遇到BISL或BISLED指令时,第一个线程在第一个线程的延长指令执行时将控制传递给第二个线程。 反过来,计算机系统掩盖了第一个线程延长的指令的延迟。 可以通过创建更多线程并在线程之间进一步划分寄存器池来进一步隐藏高度内存限制的操作中的内存延迟,从而基于内存延迟来优化系统。