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    • 10. 发明申请
    • Digital storage element architecture comprising dual scan clocks and gated scan output
    • 数字存储元件架构包括双扫描时钟和门控扫描输出
    • US20070022344A1
    • 2007-01-25
    • US11171537
    • 2005-06-30
    • Charles BranchSteven BartlingDharin Shah
    • Charles BranchSteven BartlingDharin Shah
    • G01R31/28
    • G01R31/318544
    • A digital storage element (e.g., a flip-flop or a latch) comprise a master transparent latch that receives functional data from a data input port and scan data from a scan input port and a slave transparent latch coupled to said master transparent latch. The slave transparent latch comprises dedicated functional data and scan data output ports. The digital storage element operates in a functional mode or in a scan mode. While in the scan mode, a first clock signal is used by the slave transparent latch and a second clock signal is used by the master transparent latch. The first and second clock signals are non-overlapping and, as such, avoid the digital storage element from creating hold violations.
    • 数字存储元件(例如,触发器或锁存器)包括主透明锁存器,其从数据输入端口接收功能数据,并从耦合到所述主透明锁存器的扫描输入端口和从属透明锁存器扫描数据。 从机透明锁存器包括专用功能数据和扫描数据输出端口。 数字存储元件以功能模式或扫描模式工作。 在扫描模式下,从属透明锁存器使用第一个时钟信号,主器件透明锁存器使用第二个时钟信号。 第一和第二时钟信号是不重叠的,因此避免数字存储元件造成持续违规。