Serializer/deserializer frontend
AssigneeXilinx, Inc.
InventorsVassili Kireev, Jafar Savoj
Life of this patent
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Abstract
A receiver frontend includes a first input junction for receiving a first input signal, a second input junction for receiving a second input signal, a first output junction, a second output junction, and circuitry configured to perform equalization on the first input signal and the second input signal to establish a first output signal with a desired frequency response at the first output junction, and to establish a second output signal with a desired frequency response at the second output junction, and perform common-mode voltage adjustment on a common-mode voltage associated with the first output signal and the second output signal.
Claims18
A receiver frontend, comprising:
- an equalizer configured to perform equalization on an input channel comprising
- a first component connected between a first junction and a second junction, the first component comprising a first capacitor in parallel with a first resistor, the first junction being configured to receive a first input signal associated with the input channel;
- a second component connected between a third junction and a fourth junction, the second component comprising a second capacitor in parallel with a second resistor, the third junction being configured to receive a second input signal associated with the input channel;
- a third resistor connected between a first node and the second junction;
- and
- a fourth resistor connected between the first node and the fourth junction;
- wherein the equalizer is configured to provide a first output signal at the second junction, the first output signal corresponding to the first input signal, and to provide a second output signal at the fourth junction, the second output signal corresponding to the second input signal;
- and
- a first voltage source coupled to the first node, wherein the first voltage source is configured to adjust a common-mode voltage associated with the first output signal and the second output signal.
A receiver frontend, comprising:
- a first input junction for receiving a first input signal;
- a second input junction for receiving a second input signal;
- a first output junction;
- a second output junction;
- and
- circuitry configured to:
- perform equalization on the first input signal and the second input signal to establish a first output signal with a desired frequency response at the first output junction, and to establish a second output signal with a desired frequency response at the second output junction, and
- perform common-mode voltage adjustment on a common-mode voltage associated with the first output signal and the second output signal;
- wherein the circuitry is configured to perform the equalization on the first input signal by establishing a first additional output signal with a desired frequency response at a third output junction;
- and
- wherein the circuitry is configured to perform the equalization on the second input signal by establishing a second additional output signal with a desired frequency response at a fourth output junction.
A signal processing method that involves a receiver frontend, comprising:
- performing equalization on a first input signal associated with an input channel and a second input signal associated with the input channel, wherein the first input signal is received at a first input junction of the receiver frontend and the second input signal is received at a second input junction of the receiver frontend, and wherein the equalization is performed so that a first output signal with a desired frequency response is established at a first output junction, and a second output signal with a desired frequency response is established at a second output junction;
- performing common-mode input voltage adjustment for a common-mode input voltage associated with the first input signal and the second input signal to establish a desired common-mode output voltage for the first output signal and the second output signal;
- performing termination of reflected signals associated with the first input signal and the second input signal;
- and
- providing electrostatic discharge protection to the receiver frontend.
Dependencies are inferred from the claim text.