Systems and methods for a PLL-adjusted reference clock
First Claim
Patent Images
1. A system, comprising:
- a phase-locked loop (PLL) that multiplies a reference clock input to generate a communication link clock signal;
a transmitter/receiver (TX/RX) module coupled to the PLL, the TX/RX module is configured to transmit and receive data based on the communication link clock signal; and
a divider coupled to the PLL, the divider receives the communication link clock signal and outputs a PLL-adjusted reference clock that approximates the reference clock input,wherein the PLL-adjusted reference clock is used to generate at least one other communication link clock signal.
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Abstract
A system is provided, the system includes a phase-locked loop (PLL) that multiplies a reference clock input to generate a communication link clock signal. The system also includes a transmitter/receiver (TX/RX) module coupled to the PLL, the TX/RX module is configured to transmit and receive data based on the communication link clock signal. The system also includes a divider coupled to the PLL, the divider receives the communication link clock signal and outputs a PLL-adjusted reference clock that approximates the reference clock input. The PLL-adjusted reference clock is used to generate at least one other communication link clock signal.
6 Citations
15 Claims
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1. A system, comprising:
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a phase-locked loop (PLL) that multiplies a reference clock input to generate a communication link clock signal; a transmitter/receiver (TX/RX) module coupled to the PLL, the TX/RX module is configured to transmit and receive data based on the communication link clock signal; and a divider coupled to the PLL, the divider receives the communication link clock signal and outputs a PLL-adjusted reference clock that approximates the reference clock input, wherein the PLL-adjusted reference clock is used to generate at least one other communication link clock signal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An electronic device, comprising:
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first and second communication links configured to exchange data; and a reference clock generator that outputs a reference clock to the first communication link, wherein the first communication link multiplies the reference clock for use as a communication link clock signal and wherein the first communication link divides the communication link clock signal to generate a jitter-matched reference clock for use by the second communication link. - View Dependent Claims (8, 9, 10, 11)
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12. A method performed by a first communication link, comprising:
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receiving a first reference clock; generating a first communication link clock signal by multiplying the first reference clock; generating a second reference clock based on the communication link clock signal, the second reference clock follows a jitter pattern of the first communication link clock signal; and providing the second reference clock to a second communication link to generate a second communication link clock signal for the second communication link. - View Dependent Claims (13, 14, 15)
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Specification