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US 2025/0260393 A1Published application
Injection locked phase rotator
AssigneeXilinx, Inc.
InventorsLi Yang Chen, Chi Fung Poon, Chuenhuei Chou
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AssigneeXilinx, Inc.
InventorsLi Yang Chen, Chi Fung Poon, Chuenhuei Chou
Estimating the term…
An injection locked ring oscillator (ILRO) system is disclosed. The ILRO system includes an ILRO circuit configured to receive a plurality of injection control signals and a phase control signal, and to generate a plurality of output clock signals; a phase detector circuit configured to receive the output clock signals and to generate a phase output signal based on phase differences of particular pairs of the output clock signals; and a phase to voltage circuit configured to receive the phase output signal from the phase detector circuit, and to generate the phase control signal based on the phase output signal, where the phase control signal presents a negative feedback phase signal to the ILRO circuit for the phase differences in the particular pairs of the output clock signals.
An injection locked ring oscillator (ILRO) system, comprising:
A method of operating an injection locked phase rotator (ILPR) circuit, the method comprising:
The method of claim 15, wherein the phase control signal presents a negative feedback phase signal to the ILRO circuit both for phase differences greater than 45 degrees in the particular pairs of the output clock signals and for phase differences less than 45 degrees in the particular pairs of the output clock signals.
The method of claim 15, wherein the output clock signals comprise eight output clock signals, wherein a first output clock has an about 0 degree phase, a second clock has an about 45 degree phase, a third clock has an about 90 degree phase, a fourth clock has an about 135 degree phase, a fifth clock has an about 180 degree phase, a six clock has an about 225 degree phase, a seventh clock has an about 270 degree phase, and an eighth clock has an about 315 degree phase, wherein the phase control signal is generated based on phase differences of the first and second clocks, the second and third clocks, the third and fourth clocks, the fourth and fifth clocks, the fifth and sixth clocks, the sixth and seventh clocks, the seventh and eighth clocks, and the eighth and first clocks.
The method of claim 17, wherein the ILRO circuit comprises a plurality of delay components, and wherein the phase differences of the first and second clocks, the third and fourth clocks, the fifth and sixth clocks, and the seventh and eighth clocks cause the phase control signal to increase a delay of the delay components.
The method of claim 17, wherein the ILRO circuit comprises a plurality of delay components, and wherein the phase differences of the second and third clocks, the fourth and signal to decrease a delay of the delay components.
The method of claim 17, wherein the ILRO circuit comprises a plurality of delay components, and wherein changes in the phase differences of the first and second clocks, the third and fourth clocks, the fifth and sixth clocks, and the seventh and eighth clocks change a current, wherein the change in the current causes the phase control signal to decrease a delay of the delay components.
An injection locked phase rotator (ILPR) circuit, comprising:
Dependencies are inferred from the claim text.