Receiver based power efficient transmitter for ethernet
First Claim
Patent Images
1. A system comprising:
- a transceiver configured to operate in full-duplex mode, the transceiver comprising a transmitting portion and a receiving portion, wherein;
the transmitting portion is configured to transmit a first signal comprising a first magnitude value, andthe receiving portion is configured to receive a second signal comprising a second magnitude value;
an analog-to-digital converter configured to determine the second magnitude value; and
a controller coupled to the analog-to-digital converter and configured to generate a control signal based on the second magnitude value,wherein the control signal adjusts current driving the transmitting portion to a minimum current value that is required to generate a third signal comprising a third magnitude value, the third magnitude value being equal to a sum of the first and second magnitude values.
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Abstract
Systems and methods are used to adjust, e.g., reduce, current driving a transmitter, i.e., to reduce transmitter power consumption, based on an actual value of a received signal from received along a cable. For example, this is very beneficial to an Ethernet system where the received signal is attenuated by the lossy cable. In this case, the transmitter power consumption can be lowered during a normal application where data is transmitted and received through the cable.
11 Citations
20 Claims
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1. A system comprising:
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a transceiver configured to operate in full-duplex mode, the transceiver comprising a transmitting portion and a receiving portion, wherein; the transmitting portion is configured to transmit a first signal comprising a first magnitude value, and the receiving portion is configured to receive a second signal comprising a second magnitude value; an analog-to-digital converter configured to determine the second magnitude value; and a controller coupled to the analog-to-digital converter and configured to generate a control signal based on the second magnitude value, wherein the control signal adjusts current driving the transmitting portion to a minimum current value that is required to generate a third signal comprising a third magnitude value, the third magnitude value being equal to a sum of the first and second magnitude values. - View Dependent Claims (2, 3, 4, 5)
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6. A system comprising:
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a transceiver configured to operate in full-duplex mode with a remote transceiver over a communications medium, the transceiver comprising a transmitting portion and a receiver, wherein; the transmitting portion is configured to transmit a first signal comprising a first magnitude value, and the receiving portion is configured to receive a second signal comprising a second magnitude value; and a controller coupled to the transceiver and configured to generate a control signal based on a length value of the communications medium, wherein the control signal adjusts current driving the transmitting portion to a minimum current value that is required to generate a third signal comprising a third magnitude value, the third magnitude value being equal to a sum of the first and second magnitude values, the third magnitude value being equal to a sum of the first and second magnitude values. - View Dependent Claims (7, 8, 9)
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10. A method comprising:
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transmitting, using a transmitting portion of a transceiver, a first signal comprising a first magnitude value; receiving, using a receiving portion of the transceiver, a second signal comprising a second magnitude value; determining, using an analog-to-digital converter, the second magnitude value; generating, using a controller, a control signal based on the second magnitude value, wherein the controller is coupled to the analog-to-digital converter; and adjusting, based on the control signal, current driving the transmitting portion to a minimum current value that is required to generate a third signal comprising a third magnitude value, the third magnitude value being equal to a sum of the first and second magnitude values. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method comprising:
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transmitting, using a transmitting portion of a transceiver, a first signal comprising a first magnitude value to another transceiver via a communications medium; receiving, using a receiving portion of the transceiver, a second signal comprising a second magnitude value from the another transceiver via the communications medium; generating, using a controller, a control signal based on a length value of the communications medium, wherein the controller is coupled to the transceiver; and adjusting, based on the control signal, current driving the transmitting portion to a minimum current value that is required to generate a third signal comprising a third magnitude value, the third magnitude value being equal to a sum of the first and second magnitude values. - View Dependent Claims (19, 20)
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Specification