A reference generator for use with serial link data communication is disclosed. Broadly speaking, a decision circuit may perform a comparison between a particular data symbol included in a serial data stream and a difference between a voltage level of a first signal and a voltage level of a second signal, and generate an output data value based on a result of the comparison. A reference generator circuit may selectively sink a first current value from either the first signal or the second signal based upon another output data value generated from another data symbol included in the serial data stream that was received prior to the particular data symbol.

A reference generator for use with serial link data communication is disclosed. Broadly speaking, a decision circuit may perform a comparison between a particular data symbol included in a serial data stream and a difference between a voltage level of a first signal and a voltage level of a second signal, and generate an output data value based on a result of the comparison. A reference generator circuit may selectively sink a first current value from either the first signal or the second signal based upon another output data value generated from another data symbol included in the serial data stream that was received prior to the particular data symbol.

A method and system provides for execution of calibration cycles from time to time during normal operation of the communication channel. A calibration cycle includes de-coupling the normal data source from the transmitter and supplying a calibration pattern in its place. The calibration pattern is received from the communication link using the receiver on the second component. A calibrated value of a parameter of the communication channel is determined in response to the received calibration pattern. The steps involved in calibration cycles can be reordered to account for utilization patterns of the communication channel. For bidirectional links, calibration cycles are executed which include the step of storing received calibration patterns on the second component, and retransmitting such calibration patterns back to the first component for use in adjusting parameters of the channel at first component.

A method and system provides for execution of calibration cycles from time to time during normal operation of the communication channel. A calibration cycle includes de-coupling the normal data source from the transmitter and supplying a calibration pattern in its place. The calibration pattern is received from the communication link using the receiver on the second component. A calibrated value of a parameter of the communication channel is determined in response to the received calibration pattern. The steps involved in calibration cycles can be reordered to account for utilization patterns of the communication channel. For bidirectional links, calibration cycles are executed which include the step of storing received calibration patterns on the second component, and retransmitting such calibration patterns back to the first component for use in adjusting parameters of the channel at first component.

Repeaters are described that operate to rapidly transition from low-power standby states to a low frequency signal transmission state. Bandwidth for high-frequency signal transmission is preserved.

Repeaters are described that operate to rapidly transition from low-power standby states to a low frequency signal transmission state. Bandwidth for high-frequency signal transmission is preserved.

In accordance with an embodiment, a method includes receiving a transmission signal; converting the received transmission signal into a corresponding bus signal by driving an output stage of a transmitter having a plurality of switches, where a switching behavior of the plurality of switches of the output stage is dependent on a parameter set; converting the bus signal into a corresponding reception signal, wherein an edge of the reception signal is delayed by a loop delay relative to a corresponding edge in the transmission signal; determining a measurement value for the loop delay; and altering the parameter set in order to adapt the loop delay

In accordance with an embodiment, a method includes receiving a transmission signal; converting the received transmission signal into a corresponding bus signal by driving an output stage of a transmitter having a plurality of switches, where a switching behavior of the plurality of switches of the output stage is dependent on a parameter set; converting the bus signal into a corresponding reception signal, wherein an edge of the reception signal is delayed by a loop delay relative to a corresponding edge in the transmission signal; determining a measurement value for the loop delay; and altering the parameter set in order to adapt the loop delay

A high-speed serial link receiver system, comprises: an input terminal for receiving a signal; a pi-coil including a first inductor, a second inductor, and a third inductor; a first electrostatic discharge device (ESD); a second ESD; an on-die-termination (ODT); and a receiver. The first inductor, the second inductor, and the third inductor are serially connected. The input terminal is coupled to the first inductor. A serial connection between the first inductor and the second inductor is coupled to the first ESD device. A serial connection between the second inductor and the third inductor is coupled to the ODT. The second ESD device and the receiver are coupled to the third inductor.

A method for configurating a transmission mode to provide an Internet service to a customer-premises equipment by an transmission mode configurating apparatus in an access network structure is provided. At least one network management equipment and at least one customer-premises equipment are connected through a bundle of cables including a plurality of transmission lines. The method includes determining the number of transmission lines connected to the customer-premises equipment; determining at least one of available transmission mode to provide depending on the number of transmission lines; if a plurality of available transmission modes are determined, calculating a transmission performance in each of the available transmission modes; and selecting the transmission mode with the highest performance among the plurality of the available transmission modes.