| 摘要 |
PURPOSE: A reset circuit used in case of clock change in a multiplexer is provided which generates reset by software when a low-speed multiplexer changes its mode while operating to reset a line interface unit, thereby preventing generation of error when the clock is varied. CONSTITUTION: A reset circuit used in case of clock change in a multiplexer includes an E1 processor(10) for mapping E1 to multiplex it into TUG2 or demultiplex it, a T1 processor(20) for mapping T1 to multiplex it into TUG2 or demultiplex it, and a mode selector(40) for selecting the data/clock of the E1 processor or the data/clock of the T1 processor according to a mode selection signal. The reset circuit further includes a line interface chip(50), reset according to a reset signal, for line-coding and decoding a selected data/clock, and a switch(SW1) for setting an operation mode, and a processor(30) for operating the E1 processor or T1 processor based on the set operation mode, providing the mode selection signal to the mode selector and applying the reset signal to the line interface chip whenever the mode is changed. |
