摘要:
Aspects of the present disclosure provide for a cable tester that tests a cable to determine the cable length. The cable tester can include a clock generator that generates a clock that has clock period that is a multiple of the data symbol period and a signal generator that injects the training signal, which can be synchronous with the clock, into the cable. The cable tester can also include a receiver that samples the returned signal from the cable and adaptively filters the returned signal based on the training signal and a controller that determines the cable length from the adaptive filter tap coefficients.
摘要:
A first physical layer (PHY) device includes an auto-negotiation module, a first cable-length measuring module, and a first control module. The auto-negotiation module exchanges data rates of the first PHY device and a second PHY device. The first PHY device is connected to the second PHY device by a cable. The first cable-length measuring module performs a first measurement of a length of the cable. The first control module selectively receives a second measurement of the length of the cable from the second PHY device, and selects a data rate of the first PHY device from the data rates of the first PHY device and the second PHY device based on (i) the first measurement of the length of the cable performed by the first cable-length measuring module of the first PHY device, or (ii) the second measurement of the length of the cable received from the second PHY device.
摘要:
A physical layer (PHY) device of a network device includes a first module, a first cable-length measuring (CLM) module, and a first control module. The first module determines whether a remote PHY that communicates with the PHY device over a cable is capable of measuring a length of the cable. The first CLM module measures a first length of the cable. The first control module causes the first length to be transmitted to the remote PHY, receives a second length of the cable measured by the remote PHY, and adjusts an operating parameter of the PHY based on at least one of the first and second lengths.
摘要:
A network interface module includes a physical layer module and a data rate module. The physical layer module is configured to transmit first signals to a network device via a cable at a first data rate while conforming to Ethernet baseband characteristics for the first data rate, and at least one of determine a characteristic of the cable, or perform an autonegotiation process with the network device. The data rate module is configured to select a second data rate based on at least one of the characteristic of the cable, or results of the autonegotiation process. The second data rate is slower than the first data rate. The physical layer module is configured to transmit second signals to the network device at the second data rate while conforming to the Ethernet baseband characteristics for the first data rate.
摘要:
Apparatus having corresponding methods comprise: a physical-layer input circuit to receive first signals representing first data; a first serializer to transmit a serial stream of the first data; and a magic packet circuit to generate a magic packet signal when the first data includes a magic packet.
摘要:
A physical-layer device includes a cable measurement module, a data rate module and a physical-layer device core. The cable measurement module measures characteristics of a cable. The data rate module (i) selects a data rate divisor N based on the characteristics of the cable, and (ii) reduces a rate of a first clock based on the data rate divisor N, where N is greater than 1. The physical-layer device core includes: a transmit module that transmits first signals over the cable at a data rate of M/N Gbps based on the rate of the first clock, where M is an integer; and a receive module that receives second signals over the cable at the data rate of M/N Gbps based on the rate of the first clock. The first and second signals conform to 1000BASE-T when M=1. The first and signals conform to 10GBASE-T when M=10.
摘要翻译:物理层设备包括电缆测量模块,数据速率模块和物理层设备核心。 电缆测量模块测量电缆的特性。 数据速率模块(i)基于电缆的特性来选择数据速率因数N,并且(ii)基于数据速率除数N降低第一时钟的速率,其中N大于1。 层设备核心包括:发射模块,其基于第一时钟的速率以M / N Gbps的数据速率通过电缆发送第一信号,其中M是整数; 以及接收模块,其以基于第一时钟的速率的M / N Gbps的数据速率通过电缆接收第二信号。 当M = 1时,第一和第二信号符合1000BASE-T。 当M = 10时,第一个和信号符合10GBASE-T。
摘要:
A physical-layer device (PHY) having corresponding methods comprises: a data rate module to select a data rate divisor N, where N is at least one of a positive integer, or a real number greater than, or equal to, 1; and a PHY core comprising a PHY transmit module to transmit first signals a data rate of M/N Gbps, and a PHY receive module to receive second signals at the data rate of M/N Gbps; wherein the first and second signals conform to at least one of 1000BASE-T, wherein M=1, and 10GBASE-T, wherein M=10.
摘要翻译:具有相应方法的物理层设备(PHY)包括:数据速率模块,用于选择数据速率除数N,其中N是大于或等于1的正整数或实数中的至少一个; 以及PHY核,其包括用于以M / N Gbps的数据速率发送第一信号的PHY发送模块以及以M / N Gbps的数据速率接收第二信号的PHY接收模块; 其中所述第一和第二信号符合1000BASE-T,其中M = 1和10GBASE-T中的至少一个,其中M = 10。
摘要:
A physical-layer device (PHY) having corresponding methods comprises: a data rate module to select a data rate divisor N, where N is at least one of a positive integer, or a real number greater than, or equal to, 1; and a PHY core comprising a PHY transmit module to transmit first signals a data rate of M/N Gbps, and a PHY receive module to receive second signals at the data rate of MIN Gbps; wherein the first and second signals conform to at least one of 1000BASE-T, wherein M=1, and 10GBASE-T, wherein M=10.
摘要翻译:具有相应方法的物理层设备(PHY)包括:数据速率模块,用于选择数据速率除数N,其中N是大于或等于1的正整数或实数中的至少一个; 以及PHY核,其包括PHY发送模块,用于以M / N Gbps的数据速率发送第一信号,以及PHY接收模块,以接收第二信号的数据速率为MINGbps; 其中所述第一和第二信号符合1000BASE-T,其中M = 1和10GBASE-T中的至少一个,其中M = 10。
摘要:
Systems, methods, and other embodiments associated with auto-negotiating over a single pair PHY are described. According to one embodiment, an apparatus includes a physical layer (PHY) transceiver configured to communicate over a single twisted pair channel. The apparatus includes a setup logic configured to control the PHY transceiver to initiate an auto-negotiation sequence over the single twisted pair channel with a remote device upon detecting a transmission from the remote device on the single twisted pair channel. The auto-negotiation sequence includes an exchange of parameters with the remote device using a half-duplex mode to communicate on the single twisted pair channel.
摘要:
A network device including a physical layer (PHY) device and an autonegotiation module. The PHY device is configured to interface with N cable pairs, where N is greater than 1. The PHY device includes a cable test module configured to diagnose a short circuit in one of the N cable pairs. The autonegotiation module is configured to i) selectively perform autonegotiation to establish a link with a link partner at one of a first link speed and a second link speed that is lower than the first link speed, and ii) select between the first link speed and the second link speed in response to the cable test module diagnosing the short circuit.