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US 2014/0233668 A1Published application
Code Forwarding and Clock Generation for Transmitter Repeaters
AssigneeLSI Corporation
InventorsHiep Pham, Chaitanya Palusa, Tomasz Prokop, Adam Healey
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Abstract
A repeater includes a clock-and-data recovery element and a phase interpolator to extract an embedded clock frequency from a data stream. The phase interpolator determine a frequency offset and sends such offset as phase interpolator codes to a filter and scaler. The filtered, scaled phase interpolator codes are used to produce a reference clock frequency for retransmission.
Claims20
A repeater comprising:
- a scaling circuit connected to a signal receiving device;
- and
- a transmitting device comprising:
- a transmitter;
- and
- a phase interpolator connected to the transmitter and connected to the scaling circuit,
- wherein:
- the scaling circuit is configured to produce one or more scaled phase interpolator codes;
- and
- the phase interpolator is configured to produce a transmission clock frequency based on a reference clock frequency and the one or more scaled phase interpolator codes.
7 more elements
A computer apparatus comprising:
- a processor;
- and
- memory connected to the processor;
- wherein the processor is configured to:
- receive a data stream;
- produce one or more phase interpolator codes based on the data stream;
- scale the one or more phase interpolator codes;
- and
- produce a transmission clock frequency based on the one or more scaled phase interpolator codes.
6 more elements
A method for retransmitting a signal comprising:
- receiving a data stream;
- producing one or more phase interpolator codes based on the data stream;
- scaling the one or more phase interpolator codes;
- and
- producing a transmission clock frequency based on the one or more scaled phase interpolator codes.
2 more elements
Dependencies are inferred from the claim text.