| 摘要 |
PURPOSE: An RJ45 serial input/output(SIO) interface device is provided to determine the direction of SIO by controlling the position of a tap switch and the installation of RJ 45 parts, thereby simplifying the circuit arrangement and improving the reliability of the circuit arrangement. CONSTITUTION: In an RJ45 serial input/output interface device, a PCB(30), to which an RJ45 socket(20) is mounted, is provided with ground terminals on upper and lower lines symmetrically and a nodal switch(40) is provided between the PCB and a line driver for selecting the short of Tx and Rx according to the manipulation of a tap switch(41). |
