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US 12,645,248 B2Granted
Buffer circuit, and semiconductor apparatus capable of adjusting a clock receiver and/or changing a clock path according to frequency information
AssigneeSK hynix Inc.
InventorJi Hyo Kang
Life of this patent
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Abstract
A semiconductor apparatus includes a frequency control circuit and an internal clock generation circuit. The frequency control circuit generates a frequency information signal based on a command address signal, and generates a frequency control signal by comparing the frequency information signal with a frequency setting signal. The internal clock generation circuit generates an internal clock signal from a system clock signal based on the frequency control signal.
Claims17
A semiconductor apparatus comprising:
- a frequency control circuit configured to generate a frequency information signal based on a command address signal and configured to compare a first frequency setting signal with the frequency information to generate a first frequency control signal;
- and
- a clock receiver configured to receive a system clock signal to generate a received clock signal, to increase an alternating current (AC) gain of the clock receiver when the first frequency control signal is enabled, and to increase a direct current (DC) gain of the clock receiver when the first frequency control signal is disabled.
A semiconductor apparatus comprising:
- a frequency control circuit configured to generate a frequency information signal based on a command address signal, to compare a first frequency setting signal with the frequency information to generate a first frequency control signal, and to compare a second frequency setting signal with the frequency information to generate a second frequency control signal;
- and
- a clock receiver configured to receive a system clock signal to generate a received clock signal, to vary a gain of the clock receiver based on the first frequency clock signal, and to adjust a current driving ability for outputting the received clock signal based on the second frequency control signal.
Dependencies are inferred from the claim text.