Receiver for high speed communication channel
AssigneeeTopus Technology Inc.
InventorsKai Keung Chan, Danfeng Xu, Yu Kou
Life of this patent
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Abstract
A receiver for data recovery from a channel signal of a communications channel. The receiver includes a quantization circuit to generate a quantized code corresponding to the channel signal. A first decision circuit recovers, in a first signal processing mode, digital data for the channel signal based on the quantized representation of the channel signal. A second decision circuit recovers, in a second signal processing mode, the digital data for the channel signal based on the quantized representation of the channel signal. A controller selects between the first signal processing mode and the second signal processing mode based on a parameter indicative of a signal quality of the channel signal.
Claims20
A receiver for data recovery from a channel signal of a communications channel, comprising:
- a quantization circuit to generate a quantized code corresponding to the channel signal, the quantization circuit comprising:
- a plurality of comparators to generate a thermometer code based on a plurality of reference voltages and an analog signal generated from the channel signal, and
- a code conversion circuit to convert the thermometer code into the quantized code using thermometer to binary conversion;
- a first decision circuit to recover, in a first signal processing mode, digital data for the channel signal based on the quantized code corresponding to the channel signal;
- a second decision circuit to recover, in a second signal processing mode, the digital data for the channel signal based on the quantized code corresponding to the channel signal;
- and
- a controller to select between the first signal processing mode and the second signal processing mode based on a parameter indicative of a signal quality of the channel signal,
- wherein in the first signal processing mode, the controller turns off at least some of the comparators of the plurality of comparators based on the parameter indicative of the signal quality of the channel signal.
A method of operation in a receiver for data recovery from a channel signal of a communications channel, the method comprising:
- generating a quantized code corresponding to the channel signal, wherein generating the quantized code comprises:
- generating, with a plurality of comparators, a thermometer code based on a plurality of reference voltages and an analog signal generated from the channel signal, and
- converting, with a code conversion circuit, the thermometer code into the quantized code using thermometer to binary conversion;
- recovering, with a first decision circuit in a first signal processing mode, digital data for the channel signal based on the quantized code corresponding to the channel signal;
- recovering, with a second decision circuit in a second signal processing mode, the digital data for the channel signal based on the quantized code corresponding to the channel signal;
- selecting between the first signal processing mode and the second signal processing mode based on a parameter indicative of a signal quality of the channel signal;
- and
- turning off, in the first signal processing mode, at least some of the comparators of the plurality of comparators based on the parameter indicative of the signal quality of the channel signal.
A non-transitory computer readable medium storing a representation of a receiver for data recovery from a channel signal of a communications channel, the receiver comprising:
- a quantization circuit to generate a quantized code corresponding to the channel signal, the quantization circuit comprising:
- a plurality of comparators to generate a thermometer code based on a plurality of reference voltages and an analog signal generated from the channel signal, and
- a code conversion circuit to convert the thermometer code into the quantized code using thermometer to binary conversion;
- a first decision circuit to recover, in a first signal processing mode, digital data for the channel signal based on the quantized code corresponding to the channel signal;
- a second decision circuit to recover, in a second signal processing mode, the digital data for the channel signal based on the quantized code corresponding to the channel signal;
- and
- a controller to select between the first signal processing mode and the second signal processing mode based on a parameter indicative of a signal quality of the channel signal;
- wherein in the first signal processing mode, the controller turns off at least some of the comparators of the plurality of comparators based on the parameter indicative of the signal quality of the channel signal.
Dependencies are inferred from the claim text.