Device for generating transmission clock of sink and transmission method using generated transmission clock
First Claim
1. A sink, comprising:
- a receiver configured to;
detect, without a reference clock, a phase difference between a reception clock of a data signal received from a source and a recovered clock;
generate a digital control oscillator code representative of the phase difference; and
recover data from the data signal by using the recovered clock; and
a transmitter configured to;
generate, without a reference clock, a transmission clock from the digital control oscillator code having the recovered clock locked to the reception clock; and
transmit return data to the source by using the transmission clock when a return data request identifier is received from the source,wherein the sink is further configured to store the digital control oscillator code.
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Abstract
A semiconductor device for generating a transmission clock in a sink without a reference clock and a method of transmitting data from the sink to a source by use of the generated transmission clock are provided. The sink may include: a receiver configured to generate a digital control oscillator code by using a phase difference between a reception clock of a data signal received from a source and a recovered clock and configured to recover data from the data signal by using the recovered clock recovered by the generated digital control oscillator code; and a transmitter configured to generate a transmission clock by the digital control oscillator code having the recovered clock locked to the reception clock and configured to transmit return data to the source by using the transmission clock when a return data request identifier is received from the source.
18 Citations
20 Claims
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1. A sink, comprising:
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a receiver configured to; detect, without a reference clock, a phase difference between a reception clock of a data signal received from a source and a recovered clock; generate a digital control oscillator code representative of the phase difference; and recover data from the data signal by using the recovered clock; and a transmitter configured to; generate, without a reference clock, a transmission clock from the digital control oscillator code having the recovered clock locked to the reception clock; and transmit return data to the source by using the transmission clock when a return data request identifier is received from the source, wherein the sink is further configured to store the digital control oscillator code. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of transmitting data between a source and a sink, the method comprising:
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generating, without a reference clock, a transmission clock, wherein generating the transmission clock comprises; detecting a phase difference between a reception clock of a data signal received from the source and a recovered clock; generating a digital control oscillator code representative of the phase difference; and storing the digital control oscillator code; generating, without the reference clock, the transmission clock with a digital control oscillator included in a transmitter of the sink, wherein the digital control oscillator generates, without the reference clock, the transmission clock using the digital control oscillator code; and changing a direction of data transmission between the source and the sink and transmitting return data to the source by using the transmission clock when a return data request identifier is received from the source. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification