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    • 5. 发明授权
    • Exception processing in superscalar microprocessor
    • 超标量微处理器异常处理
    • US06341324B1
    • 2002-01-22
    • US08540349
    • 1995-10-06
    • Robert L. Caulk, Jr.Hidetaka MagoshiKevin L. Daberkow
    • Robert L. Caulk, Jr.Hidetaka MagoshiKevin L. Daberkow
    • G06F1300
    • G06F9/3814G06F9/3802G06F9/3861G06F9/3885
    • A microprocessor system includes a core CPU for instruction execution and a coprocessor interconnected with said core CPU for system control and exception processing. The coprocessor includes a plurality of exception handling registers including an exception program counter having a restart location stored therein for use after an exception is serviced, a status register having operating mode identification and interrupt enabling bits, and a configuration and cache control register. Interrupt processing is compatible with a plurality of instruction sets with a particular instruction set being designated by setting at least one bit in the configuration and cache control register. Registers are provided to save the operating state of the CPU prior to interrupt enable, the operating state of the CPU being restored after exception processing is completed and user mode is reestablished.
    • 微处理器系统包括用于指令执行的核心CPU和与所述核心CPU相互连接的用于系统控制和异常处理的协处理器。 协处理器包括多个异常处理寄存器,其包括异常程序计数器,该异常程序计数器具有存储在其中的重新启动位置,用于在异常被服务之后使用,具有操作模式识别和中断使能位的状态寄存器以及配置和高速缓存控制寄存器。 中断处理与通过设置配置和高速缓存控制寄存器中的至少一个比特指定的特定指令集的多个指令集兼容。 提供寄存器以在中断使能之前保存CPU的工作状态,在完成异常处理并重新建立用户模式后恢复CPU的运行状态。
    • 7. 发明授权
    • Apparatus and method for distributing a clock signal on a large scale integrated circuit
    • 在大规模集成电路上分配时钟信号的装置和方法
    • US06538957B2
    • 2003-03-25
    • US09929633
    • 2001-08-14
    • Hidetaka Magoshi
    • Hidetaka Magoshi
    • G11C700
    • G11C7/222G06F1/10G11C7/22H03K5/1506H03L7/07H03L7/0814
    • A semiconductor chip includes a plurality of regional clock distribution nodes located on the semiconductor chip; a plurality of clock buffers, each including a delay lock loop (DLL) circuit providing a DDL function and each being operable to produce a respective output clock signal from an associated input clock signal in accordance with the DLL function, the outputs of an Nth level subset of the plurality of clock buffers being coupled to respective ones of the plurality of regional clock distribution nodes; and a plurality of phase detectors, each being operable to produce a respective error signal indicative of phase differences between the output clock signals of at least two of the regional clock distribution nodes, wherein the DDL circuits of the Nth subset of clock buffers adjust the respective output clock signals in accordance with the respective error signals such that the output clock signals of the regional clock distribution nodes are substantially coincident.
    • 半导体芯片包括位于半导体芯片上的多个区域时钟分配节点; 多个时钟缓冲器,每个时钟缓冲器包括提供DDL功能的延迟锁定环(DLL)电路,并且每个时钟缓冲器可操作以根据DLL功能从相关联的输入时钟信号产生相应的输出时钟信号,第N级的输出 所述多个时钟缓冲器的子集耦合到所述多个区域时钟分配节点中的相应的时钟分配节点; 以及多个相位检测器,每个相位检测器可操作以产生指示至少两个区域时钟分配节点的输出时钟信号之间的相位差的相应误差信号,其中时钟缓冲器的第N个子集的DDL电路调整相应的 根据相应的误差信号输出时钟信号,使得区域时钟分配节点的输出时钟信号基本一致。
    • 8. 发明授权
    • Methods and apparatus for controlling hierarchical cache memory
    • 用于控制分级缓存的方法和装置
    • US07870340B2
    • 2011-01-11
    • US12290141
    • 2008-10-28
    • Hidetaka Magoshi
    • Hidetaka Magoshi
    • G06F12/00G06F13/00G06F13/28
    • G06F12/0811G06F12/0848G06F12/0864G06F12/0895G06F12/0897
    • Methods and apparatus for controlling hierarchical cache memories permit controlling a first level cache memory including a plurality of cache lines and controlling a next lower level cache memory including a plurality of cache lines. An additional memory may be associated with the next lower level cache memory and include a plurality of memory lines, the number of memory lines corresponding to the number of cache lines in a way set of the first level cache memory. Alternatively, the memory lines may include L-flags for multiple cache lines of each way set of the next lower level cache memory. L-flags associated with a given index plus any index offset from the first level cache memory may be contained in a single memory line of the additional memory.
    • 用于控制分级高速缓冲存储器存储器的方法和装置允许控制包括多条高速缓存行的第一级高速缓存存储器并且控制包括多条高速缓存行的下一级低速缓冲存储器。 附加存储器可以与下一个较低级高速缓存存储器相关联,并且包括多个存储器线,存储线的数量对应于第一级高速缓冲存储器的方式集合中的高速缓存线的数量。 或者,存储器线可以包括用于下一个较低级别高速缓存存储器的每一组的多个高速缓存行的L标志。 与给定索引相关联的L标记加上来自第一级高速缓冲存储器的任何索引偏移可以包含在附加存储器的单个存储器行中。