Abstract: A three-way handshaking method includes: controlling a first port in a first specific mode to send a first specific signal to a second port, and controlling the first port to enter a second specific mode; when the first port receives a second specific signal, determining the second port is in the second specific mode and controlling the first port to send a third specific signal to the second port; and when it is determined that the second port is in a third specific mode, controlling the first port to enter the third specific mode.

Abstract: A method for estimating cable length in an Ethernet system and a receiver thereof are applicable to an Ethernet system. The method for estimating cable length includes obtaining a channel tap from channel information of a feedback equalizer in the Ethernet system and estimating a cable length according to the channel tap, a first coefficient and a constant.

Abstract: A united power module having an external input and a first input is provided. The united power module includes a load block, a protection circuitry and a detection block. The detection block includes an analog circuitry. The load block and an end of the protection circuitry are electrically coupled to the external input. The load block, the first input, and another end of the protection circuitry are electrically coupled to the detection block. The load block is supplied by an external power received from the external input. The protection circuitry receives the external power and outputs an auxiliary power. The analog circuitry receives a first power from the first input under a normal power supply state, or receives the auxiliary power under an auxiliary power supply state.

Abstract: A control method applied to an Operating-Mode Finite-State-Machine (OPFSM) arranged for deciding a behavior of a first port of an apparatus includes: controlling the OPFSM to enter a second local state from a first local state and controlling the first port to send a signal with a wakeup pattern to a link partner of the first port when the state of the OPFSM is the first local state, and a wakeup request bit is a first local value.

Abstract: A channel detection method for an echo canceller of a communication device is provided. The method includes the following steps. A first detection signal is transmitted to an end of a channel coupled to the communication device. A plurality of taps corresponding to a reflected signal of the first detection signal are received by an echo canceller at the end of the channel. The taps corresponding to the reflected signal are compared with a reference value corresponding to each of the taps so as to determine whether each of the taps is larger than or equal to the corresponding reference value. When the tap is determined to be larger than or equal to the reference value corresponding to the tap, the tap and a position of the tap are recorded.

Abstract: A method applied to a wired network including a first network device and a second network device is disclosed. The first and second network devices each include a first set of connection ends and a second set of connection ends. Firstly, the first network device transmits a specific signal pattern through its first set and second set of connection ends. Then, the first network device detects whether a signal is received at its first set and second set of connection ends. If it is determined that a signal is not received at the first set connection ends while a signal is received at the second set connection ends, the first network device determines that its second set of connection ends is not correctly coupled to the second set of connection ends of the second network device.

Abstract: A signal transmission method is provided. The method includes the following steps. First, an output signal filtered from a square wave signal by a high pass filter is received. Then, the output signal is sampled at each time interval, so as to generate the sampled values. Next, the sampled values are compared with at least one threshold to generate comparison results. Finally, a signal pattern corresponding to the output signal is identified according to the comparison results.

Abstract: A communicating apparatus comprising a receiving module which comprises: a first receiving line, for receiving a second input data stream; a timing detecting apparatus, for detecting timings for a plurality of data units of the second input data stream; a data allocating apparatus, for allocating the second input data stream to X allocated data streams, wherein the X is a positive integer and the X is larger or equals to 2; and X second receiving lines, for respectively transmitting one of the X allocated data streams.

Abstract: The present invention discloses a temperature insensitive testing device comprising: a transmission-end test sequence generating circuit to generate a test sequence; a transmission circuit to process the test sequence according to a transmission clock and thereby generate a test signal; a reception circuit to process an echo of the test signal and generate a digital echo signal; a correlation-value generating circuit to generate correlation values including a maximum correlation value according to the test sequence and the digital echo signal; and a decision circuit to determine whether a relation between the maximum correlation value and at least one threshold satisfies a predetermined condition and thereby generate a decision result, wherein the frequency of the transmission clock is lower than a predetermined frequency which confines the variation of the maximum correlation value to a predetermined range provided that the temperature variation of the transmission cable is within a temperature variation ran

Abstract: This disclosure provides a network apparatus with communication ports, each connected to multiple channels, assigned a seed for eliminating the interference among the communication ports, and operable in a master or slave mode, each channel having a communication unit which comprises: an echo canceller, a near-end crosstalk (NEXT) canceller, a decision feedback equalizer, and a control unit configured for controlling the communication ports if the echo canceller and the decision feedback equalizer keep updating their filter coefficients according to the same symbol during a first pre-determined time-interval; wherein when more than two of the communication ports operate in the master mode, the control unit assigns different seeds to the more than two communication ports; and wherein when successive two of the communication ports operate in the slave mode, the control unit stops either the echo canceller or the NEXT canceller from updating their filter coefficients during a second pre-determined time-interval.

Abstract: A master-slave detection method includes: every single time period, utilizing a random manner for determining whether a first device is used to transmit a specific pulse signal to a second device; every single time period, utilizing a random manner for determining whether the second device is used to transmit the specific pulse signal to the first device; when the first device receives at least one portion of the specific pulse signal earlier than the second device, setting the first device as a master device, stopping the master device from sending the specific pulse signal and utilizing the master device to start transmitting a specific sequence; and setting the second device as a slave device when the second device receives the specific sequence. The at least one portion of the specific pulse signal includes continuous single pulses.

Abstract: An impedance adjustment method for a communication device, wherein the communication device has a plurality of impedance paths for selection, includes: selecting an initial impedance path; and utilizing a predetermined algorithm to examine a portion of the plurality of impedance paths by starting from the initial impedance path for selecting an optimized impedance path for the communication device. A delay capacitance adjustment method for a communication device, wherein the communication device has a plurality of delay capacitance paths for selection, includes: selecting an initial delay capacitance path; and utilizing a predetermined algorithm to examine a portion of the plurality of delay capacitance paths by starting from the initial delay capacitance path for selecting an optimized delay capacitance path of the communication device.

Abstract: The disclosure is a device and a method for Non Return to Zero (NRZ) Clock Data Recovery (CDR) calibration, which includes a CDR unit and a weight calculator unit. The CDR unit receives a compensative signal of an equalization filter to generate an error signal, a sampling clock signal, a transition sampling signal and a data signal. The weight calculator unit receives the error signal, the transition sampling signal and the data signal, and then uses a run length technique to generate weight data. The weight data controls a voltage control oscillator (VCO) which calibrates the phase and the frequency of the sampling clock signal.

Abstract: The present invention discloses a parameter generating device and the method thereof to generate a parameter for circuit operation in which the parameter corresponds to an N degree polynomial of a characteristic curve while said N is a positive integer. The parameter generating device comprises: a storage circuit to store at least N+1 initial values that are determined by a start value and a unit variation amount; and a parameter calculating circuit, coupled to the storage circuit, to carry out addition calculation for at least [(K?1)×N+1] time(s) if a multiple K is positive or subtraction calculation for at least ?K×N time(s) if the multiple K is negative, so as to generate the aforementioned parameter, wherein the multiple K is derived from a difference divided by the unit variation amount while the difference is a current value minus the start value.

Abstract: A signal transmission method is provided. The method includes the following steps. First, an output signal filtered from a square wave signal by a high pass filter is received. Then, the output signal is sampled at each time interval, so as to generate the sampled values. Next, the sampled values are compared with at least one threshold to generate comparison results. Finally, a signal pattern corresponding to the output signal is identified according to the comparison results.

Abstract: A united power module having an external input and a first input is provided. The united power module includes a load block, a protection circuitry and a detection block. The detection block includes an analog circuitry. The load block and an end of the protection circuitry are electrically coupled to the external input. The load block, the first input, and another end of the protection circuitry are electrically coupled to the detection block. The load block is supplied by an external power received from the external input. The protection circuitry receives the external power and outputs an auxiliary power. The analog circuitry receives a first power from the first input under a normal power supply state, or receives the auxiliary power under an auxiliary power supply state.

Abstract: A three-way handshaking method includes: controlling a first port in a first specific mode to send a first specific signal to a second port, and controlling the first port to enter a second specific mode; when the first port receives a second specific signal, determining the second port is in the second specific mode and controlling the first port to send a third specific signal to the second port; and when it is determined that the second port is in a third specific mode, controlling the first port to enter the third specific mode.

Abstract: An automotive electronic system and a power supply method thereof is related to the power supply method including outputting an interface signal to an automotive network, enabling a first switching regulator according to a first control signal from a control chip and/or the interface signal on the automotive network, supplying power to a network switch based on a first voltage by the first switching regulator when the first switching regulator is enabled, enabling a second switching regulator according to a second control signal from an electronic application module and/or the interface signal on the automotive network, and supplying power to the electronic application module based on the first voltage by the second switching regulator when the second switching regulator is enabled. The network switch and the electronic application module are connected to each other by the automotive network.

Abstract: The present invention discloses a network connection establishing method capable of preventing a link procedure from being strangled in a training state. An embodiment of the method comprises: a preceding step; a training step; and a following step. Said training step includes at least one of the following: counting a number, and returning to the preceding step if a local receiver is not yet ready after finishing counting the number; detecting a reception signal according to a signal detection level, and returning to the preceding step when none of the reception signal is detected; determining a number of level(s) of the reception signal, and returning to the preceding step if the number of level(s) is less than an expected level number; and comparing a signal-to-noise ratio of the reception signal with a signal-to-noise threshold, and returning to the preceding step when the signal-to-noise ratio fails to satisfy the signal-to-noise threshold.

Abstract: A channel detection method for an echo canceller of a communication device is provided. The method includes the following steps. A first detection signal is transmitted to an end of a channel coupled to the communication device. A plurality of taps corresponding to a reflected signal of the first detection signal are received by an echo canceller at the end of the channel. The taps corresponding to the reflected signal are compared with a reference value corresponding to each of the taps so as to determine whether each of the taps is larger than or equal to the corresponding reference value. When the tap is determined to be larger than or equal to the reference value corresponding to the tap, the tap and a position of the tap are recorded.