Semiconductor circuit
First Claim
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1. A semiconductor circuit comprising:
- a first logic gate that receives inputs of a first input signal, a clock signal and a feedback signal and performs a first logical operation to output a first output signal;
a second logic gate that receives inputs of the first input signal and the feedback signal, and performs a second logical operation; and
a third logic gate that receives inputs of the first output signal of the first logic gate, the clock signal and an output signal of the second logic gate and performs a third logical operation to output the feedback signal, wherein;
the first input signal comprises an enable signal and a scan-enable signal, and the first logic gate comprises a composite logic gate that performs a first sub-logical operation on the enable signal and the scan-enable signal to generate a first intermediate signal, and performs a second sub-logical operation on the first intermediate signal, the clock signal and the feedback signal to output the first output signal, orthe first input signal comprises a second input signal and the scan-enable signal, and the first logic gate comprises a composite logic gate that performs a first sub-logical operation on the second input signal and the scan-enable signal to generate a first intermediate signal, and performs a second sub-logical operation on the first intermediate signal, the clock signal and the feedback signal to output the first output signal.
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Abstract
A semiconductor circuit includes a first logic gate that receives inputs of a first input signal, a clock signal and a feedback signal and performs a first logical operation to output a first output signal. A second logic gate that receives inputs of the first output signal of the first logic gate, the clock signal, and an inverted output signal of the first input signal and performs a second logical operation to output the feedback signal.
17 Citations
21 Claims
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1. A semiconductor circuit comprising:
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a first logic gate that receives inputs of a first input signal, a clock signal and a feedback signal and performs a first logical operation to output a first output signal; a second logic gate that receives inputs of the first input signal and the feedback signal, and performs a second logical operation; and a third logic gate that receives inputs of the first output signal of the first logic gate, the clock signal and an output signal of the second logic gate and performs a third logical operation to output the feedback signal, wherein; the first input signal comprises an enable signal and a scan-enable signal, and the first logic gate comprises a composite logic gate that performs a first sub-logical operation on the enable signal and the scan-enable signal to generate a first intermediate signal, and performs a second sub-logical operation on the first intermediate signal, the clock signal and the feedback signal to output the first output signal, or the first input signal comprises a second input signal and the scan-enable signal, and the first logic gate comprises a composite logic gate that performs a first sub-logical operation on the second input signal and the scan-enable signal to generate a first intermediate signal, and performs a second sub-logical operation on the first intermediate signal, the clock signal and the feedback signal to output the first output signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A semiconductor circuit comprising:
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a first logic gate that outputs a first output signal by receiving inputs of a first input signal, a clock signal, a feedback signal and an inverted signal of the first output signal and performing a first sub-logical operation and a second sub-logical operation; a second logic gate that receives inputs of the first input signal and the feedback signal to perform a first logical operation; and a third logic gate that receives inputs of the first output signal of the first logic gate, the clock signal and an output signal of the second logic gate and performs a second logical operation to output the feedback signal, wherein; the first input signal comprises an enable signal and a scan-enable signal, and the first logic gate comprises a composite logic gate that performs the first sub-logical operation on the inverted signal of the first output signal, the enable signal and the scan-enable signal to generate a first intermediate signal, and performs the second sub-logical operation on the first intermediate signal, the clock signal and the feedback signal to output the first output signal, or the first input signal comprises a second input signal and the scan-enable signal, and the first logic gate comprises a composite logic gate that performs the first sub-logical operation on the inverted signal of the first output signal, the second input signal and the scan-enable signal to generate a first intermediate signal, and performs the second sub-logical operation on the first intermediate signal, the clock signal and the feedback signal to output the first output signal. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A semiconductor circuit comprising:
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a first logic gate that receives inputs of a first input signal, a clock signal and a feedback signal and performs a first logical operation to output a first output signal; a second logic gate that receives inputs of the first input signal and the feedback signal, and performs a second logical operation; a third logic gate that receives inputs of the first output signal of the first logic gate, the clock signal and an output signal of the second logic gate and performs a third logical operation to output the feedback signal; and a latch that receives the inputs of the first output signal and the clock signal to output a second output signal, wherein the latch comprises a D latch or an R-S latch.
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Specification