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US 2011/0254595 A1Published application
Flip-Flop and Frequency Dividing Circuit with Flip-Flop
AssigneeMStar Semiconductor, Inc.
InventorWeigang Sun
Life of this patent
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Abstract
Various embodiments of a flip-flop and a frequency dividing circuit are provided. In one aspect, a flip-flop includes an input stage and a latch stage. The input stage is capable of converting an input signal to an output signal under the control of a first clock signal and a second clock signal. The latch stage is capable of latching the output signal under the control of a third clock signal and a fourth clock signal. The first clock signal, the second clock signal, the third clock signal and the fourth clock signal have different phases.
Claims13
A flip-flop comprising:
- an input stage that converts an input signal to an output signal according to a first clock signal and a second clock signal;
- and
- a latch stage that latches the output signal according to a third clock signal and a fourth clock signal;
- wherein, the first clock signal, the second clock signal, the third clock signal, and the fourth clock signal respectively have different phases.
1 more element
A frequency dividing circuit, comprising:
- a first flip-flop having an input end for signal reception under control of a first clock signal and a second clock signal, and an output end for signal latching under the control of a third clock signal and a fourth clock signal;
- and
- a second flip-flop having an input end coupled to the output end of the first flip-flop, an output end coupled to the input end of the first flip-flop, wherein the input end of the second flip-flop is for signal reception under control of the third clock and the fourth clock, and wherein the output end of the second flip-flop is for signal latching under the control of the first clock signal and the second clock signal;
- wherein, the first clock signal, the second clock signal, the third clock signal, and the fourth clock signal respectively have different phases.
1 more element
Dependencies are inferred from the claim text.