Patent ID: 8488715
Filing Date: 2013-07-16
Classification: H04J

Abstract:
1. A destuff circuit that parallel-processes input data to thereby remove invalid data inserted in a stuff position of the input data and extract valid data, the destuff circuit comprising: a stuff shifter configured to input a plurality of data signals assigned to a plurality of lanes, and a plurality of stuff signals indicating a stuff position of each of the data signals, and configured to shift within a column invalid data inserted in the stuff position of each of the data signals so that the invalid data is placed continuously from one end of the column; a data rotator configured to input data signals of the respective lanes output from the stuff shifter, and stuff signals that respectively correspond to the respective data signals, and configured to detect, based on the respective stuff signals, a number of stuffs of each column, and configured to operate to rotate the data in the respective lanes of respective columns by moving the data in the respective lanes in one direction within the respective columns by a number of lanes according to the detection results, wherein the destination for the movement of the data in a lane placed in one end of a column by one lane is a lane placed in another end of the column; and a buffer memory configured to store and output valid data included in the data signal of each lane output from the data rotator in first-in-first-out fashion.