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1. 发明授权

US08493119B2 Scannable flip-flop with hold time improvements 有权
标题翻译：可持续时间改进的可扫描触发器
公开(公告)号：US08493119B2
公开(公告)日：2013-07-23
申请号：US13295992
申请日：2011-11-14
申请人： Derrick A. Leach , Thomas J. Best , Edward M. McCombs
发明人： Derrick A. Leach , Thomas J. Best , Edward M. McCombs
IPC分类号： H03K3/289
CPC分类号： H03K3/35625 , H03K3/012
摘要： Embodiments of a scannable flip-flop are disclosed that may reduce data hold time, which may in turn improve the performance of circuits incorporating the scannable flip-flop. The scannable flip-flop may include a slave latch and a master latch including an input multiplexer. The multiplexer may include a number of input ports, for example to receive normal operating mode data as well as scan operating mode data, and the multiplexer may be operable to controllably select one of the input ports and pass the value of the selected port to an output of the multiplexer. For example, the multiplexer may generate individual control signals for the various ports dependent upon both the clock signal and a select signal, such that each of the ports is qualified with the select signal and the clock signal before the multiplexer presents the input data of the selected port as the output of the multiplexer.
摘要翻译：公开了可扫描触发器的实施例，其可以减少数据保持时间，这又可以提高结合可扫描触发器的电路的性能。可扫描触发器可以包括从锁存器和包括输入多路复用器的主锁存器。复用器可以包括多个输入端口，例如用于接收正常操作模式数据以及扫描操作模式数据，并且多路复用器可操作以可控制地选择输入端口之一并将所选端口的值传递到输出多路复用器。例如，多路复用器可以根据时钟信号和选择信号来生成针对各种端口的各个控制信号，使得每个端口在选择信号和时钟信号之前通过多路复用器提供输入数据选择端口作为多路复用器的输出。

2. 发明申请

US20120146697A1 SCANNABLE FLIP-FLOP WITH HOLD TIME IMPROVEMENTS 有权
标题翻译：具有持续时间改进的可扫描FLIP-FLOP
公开(公告)号：US20120146697A1
公开(公告)日：2012-06-14
申请号：US13295992
申请日：2011-11-14
申请人： Derrick A. Leach , Thomas J. Best , Edward M. McCombs
发明人： Derrick A. Leach , Thomas J. Best , Edward M. McCombs
IPC分类号： H03K3/289
CPC分类号： H03K3/35625 , H03K3/012
摘要： Embodiments of a scannable flip-flop are disclosed that may reduce data hold time, which may in turn improve the performance of circuits incorporating the scannable flip-flop. The scannable flip-flop may include a slave latch and a master latch including an input multiplexer. The multiplexer may include a number of input ports, for example to receive normal operating mode data as well as scan operating mode data, and the multiplexer may be operable to controllably select one of the input ports and pass the value of the selected port to an output of the multiplexer. For example, the multiplexer may generate individual control signals for the various ports dependent upon both the clock signal and a select signal, such that each of the ports is qualified with the select signal and the clock signal before the multiplexer presents the input data of the selected port as the output of the multiplexer.
摘要翻译：公开了可扫描触发器的实施例，其可以减少数据保持时间，这又可以提高结合可扫描触发器的电路的性能。可扫描触发器可以包括从锁存器和包括输入多路复用器的主锁存器。复用器可以包括多个输入端口，例如用于接收正常操作模式数据以及扫描操作模式数据，并且多路复用器可操作以可控制地选择输入端口之一并将所选端口的值传递到输出多路复用器。例如，多路复用器可以根据时钟信号和选择信号来生成针对各种端口的各个控制信号，使得每个端口在选择信号和时钟信号之前通过多路复用器提供输入数据选择端口作为多路复用器的输出。

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