Method, system and device for removing media access control addresses

摘要

Embodiments of the present invention disclose a method and device for selecting a sampling clock signal. The method includes: obtaining, by a logic chip, a data edge of a data signal and a clock edge of a clock signal, selecting a sampling edge according to the data edge and the clock edge, and sending a selecting signal corresponding to the sampling edge to a selector; and selecting, by the selector, a sampling clock signal according to the selecting signal. The technical solutions provided by the embodiments of the present invention can solve problems of poor system maintainability and high cost of operation and maintenance because a receiver device needs to select a sampling clock signal through manual configuration in the synchronous serial-port communication in the prior art.

主权项

1. A method for selecting a sampling clock signal, wherein the method is applied to a receiver device, the receiver device comprising a logic chip, a selector, a receive data line RXD and a receive clock line RXC, wherein the logic chip is connected to the selector, and wherein the logic chip is connected to the RXD and the RXC respectively; the selector is a 2-to-1 selector, and the selector is connected to the RXC through an inverter; wherein
the method for selecting a sampling clock signal comprises: obtaining, by the logic chip, a data signal from the RXD and a clock signal from the RXC; obtaining, by the logic chip, a data edge of the data signal and a clock edge of the clock signal, selecting a rising edge or a falling edge nearest to a middle position of a data pulse from the clock edge as a sampling edge by detecting only once, relative position of the data edge and the clock edge, and sending a selecting signal corresponding to the sampling edge to the selector; and selecting, by the selector, the clock signal obtained from the RXC or an inverted clock signal obtained from the inverter as a sampling clock signal according to the selecting signal.