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    • 1. 发明授权
    • Dynamic logic scan gate method and apparatus
    • 动态逻辑扫描门法和装置
    • US06745357B2
    • 2004-06-01
    • US09901411
    • 2001-07-09
    • David W. ChrudimskyStephen C. HorneJames S. BlomgrenMichael R. Seningen
    • David W. ChrudimskyStephen C. HorneJames S. BlomgrenMichael R. Seningen
    • G01R3128
    • H03K19/096
    • A method and apparatus for random-access scan of a network 990 of dynamic logic or N-NARY logic that includes sequentially clocked precharge logic gates and one or more scan gates (900) driven by multiple overlapping clock signals generated from a clock generation circuit (904) coupled to a clock spine (902). Each clocked precharge logic gate and each scan gate include a logic tree (502) with one or more evaluate nodes, a precharge circuit (32), an evaluate circuit (36), and one or more output buffers (34). Each scan gate further includes a scan circuit (806) that accepts scan control signals (406, 408, 410, 824, and 826) and couples to one or more scan registers (416) in a RAM-like architecture. Scan control signals operate to capture the state of the output buffers of the scan gate, and to force the output buffers of the scan gate to a preselected level.
    • 动态逻辑或N-NARY逻辑的网络990的随机存取扫描的方法和装置,其包括顺序时钟的预充电逻辑门和由从时钟发生电路产生的多个重叠时钟信号驱动的一个或多个扫描门(900) 904),其耦合到时钟脊(902)。 每个时钟预充电逻辑门和每个扫描门包括具有一个或多个评估节点的逻辑树(502),预充电电路(32),评估电路(36)和一个或多个输出缓冲器(34)。 每个扫描门还包括扫描电路(806),其接收扫描控制信号(406,408,410,824和826)并且以类似RAM的架构耦合到一个或多个扫描寄存器(416)。 扫描控制信号操作以捕获扫描门的输出缓冲器的状态,并且迫使扫描门的输出缓冲器达到预选的电平。
    • 5. 发明授权
    • Method and apparatus for scan of synchronized dynamic logic using embedded scan gates
    • 使用嵌入式扫描门扫描同步动态逻辑的方法和装置
    • US06415405B1
    • 2002-07-02
    • US09468759
    • 1999-12-21
    • Stephen C. HorneJames S. BlomgrenMichael R. Seningen
    • Stephen C. HorneJames S. BlomgrenMichael R. Seningen
    • G01R3128
    • H03K19/096
    • A method and apparatus for random-access scan of a network of dynamic logic or N-nary logic, wherein the network includes sequentially clocked precharge logic gates and one or more scan gates is disclosed. Each clocked precharge logic gate and each scan gate further comprise a logic tree having one or more evaluate nodes, a precharge circuit, an evaluate circuit, and one or more output buffers. Each scan gate further comprises a scan circuit that accepts scan control signals and couples to one or more scan registers in a RAM-like architecture. A scan control circuit generates scan control signals and scan timing signals which operate to capture the state of the output buffers of the scan gate and provide that state to one or more scan registers. Scan control signals and scan timing signals also operate to force the output buffers of the scan gate to a preselected level, which then propagates through the network to create an output state on the next scan gate in the network, which can then be read and compared to an expected output state given the output state of the previous scan gate.
    • 一种用于动态逻辑或N-Nary逻辑网络的随机存取扫描的方法和装置,其中所述网络包括顺序时钟的预充电逻辑门和一个或多个扫描门。 每个时钟预充电逻辑门和每个扫描门还包括具有一个或多个评估节点,预充电电路,评估电路和一个或多个输出缓冲器的逻辑树。 每个扫描门还包括扫描电路,该扫描电路接受扫描控制信号并且以类似RAM的架构耦合到一个或多个扫描寄存器。 扫描控制电路产生扫描控制信号和扫描定时信号,其操作以捕获扫描门的输出缓冲器的状态,并将该状态提供给一个或多个扫描寄存器。 扫描控制信号和扫描定时信号也可以将扫描门的输出缓冲器强制到预选的电平,然后传输通过网络在网络中的下一个扫描门上产生输出状态,然后可以读取和比较 到给定前一扫描门的输出状态的预期输出状态。