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METHODS AND CIRCUITS FOR PREVENTING HOLD TIME VIOLATIONS
专利权人:
Xilinx, Inc.
发明人:
Ganusov Ilya K.,Devlin Benjamin S.,Fraisse Henri
申请号:
US201615267880
公开号:
US2018083633(A1)
申请日:
2016.09.16
申请国别(地区):
美国
年份:
2018
代理人:
摘要:
Aspects of various embodiments of the present disclosure are directed to methods and circuits for preventing hold time violations in clock synchronized circuits. In an example implementation, a circuit includes at least a first flip-flop, a second flip-flop, and a level-sensitive latch connected in a signal path from the first flip-flop to the second flip-flop. A clock node of the first flip-flop is connected to receive a first clock signal and a clock node of the second flip-flop is connected to receive a second clock signal. The propagation delay from the first flip-flop through the level-sensitive latch to the second flip-flop is smaller than the skew between the first clock and the second clock, thereby presenting a hold time violation. A level-sensitive latch control circuit is configured to prevent the hold time violation by providing a pulsed clock signal to a clock node of the one level-sensitive latch circuit.
来源网站:
中国工程科技知识中心
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http://www.ckcest.cn/home/

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