| 摘要 |
PURPOSE: An apparatus for arranging SDH(Synchronous Digital Hierarchy) mode data and a method therefor are provided to arrange inputted data according to each mode and optimize the entire gate required in data arrangement. CONSTITUTION: A signal expanding unit(10) receives SDH data with one bit or two bits, expands the received SDH data, and outputs parallel data. A retrieving unit(50) retrieves the parallel data outputted from the signal expanding unit(10), and outputs an arrangement reference signal for informing a frame start point of the input data. The signal expanding unit(10) has the first delay unit(20), a multiplexing unit(30) and the second delay unit(40). The first delay unit(20) receives the first data, and outputs a parallel signal. The multiplexing unit(30) receives the output of the first delay unit(20) and the second data with two bits according to an 1 bit/2 bit mode selection signal, and multiplexes the output of the first delay unit(20) and the second data. The second delay unit(40) receives the output of the multiplexing unit(30), and outputs the parallel signal.
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