Integrated circuit device having internal fast clock source
First Claim
1. An integrated circuit device comprising:
- an input interface operative in response to an external clock signal for sequentially receiving data in synchronization with a given external [synchro] synchronization signal;
a phase-locked loop (PLL) unit [including an internal clock source] operative in phase-locked manner according to the external [synchro] synchronization signal and the external clock signal for generating an internal clock signal which is faster than the external clock signal;
a processing unit operative in response to the internal clock signal for sequentially processing the received data; and
an output interface operative in response to the external clock signal and the external synchronization signal for sequentially transmitting the processed data in synchronization with the external synchronization signal and the external clock signal.
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Accused Products
Abstract
An integrated circuit device is comprised of an input interface, a PLL unit, a processing unit and an output interface. The input interface operates in response to an external clock signal for sequentially receiving input data in synchronization with an external synchro signal. The PLL unit includes an internal clock source operative in phase-locked manner according to the external synchro signal for generating an internal clock signal which is faster than the external clock signal. The processing unit operates in response to the internal clock signal for sequentially processing the input data. The output interface operates in response to the external synchro signal for sequentially outputting the processed data in synchronization with the external synchro signal.
24 Citations
14 Claims
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1. An integrated circuit device comprising:
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an input interface operative in response to an external clock signal for sequentially receiving data in synchronization with a given external [synchro] synchronization signal; a phase-locked loop (PLL) unit [including an internal clock source] operative in phase-locked manner according to the external [synchro] synchronization signal and the external clock signal for generating an internal clock signal which is faster than the external clock signal; a processing unit operative in response to the internal clock signal for sequentially processing the received data; and an output interface operative in response to the external clock signal and the external synchronization signal for sequentially transmitting the processed data in synchronization with the external synchronization signal and the external clock signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of operating an integrated circuit, comprising the steps of:
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providing an external synchronization signal to the integrated circuit; generating an internal clock signal within the integrated circuit that is faster than an external clock signal, said internal clock signal being based on the external synchronization signal and the external clock signal; operating the integrated circuit by the internal clock signal; processing data inputted to the integrated circuit based on the internal clock signal; and outputting the processed data based on the external synchronization signal and the external clock signal. - View Dependent Claims (11, 12, 13, 14)
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Specification