Circuit combining functions of cyclic redundancy check code...

Details Circuit combining functions of cyclic redundancy check code... Circuit combining functions of cyclic redundancy check code...

H - Electricity

03

M

354/137

H03M 13/00 (2006.01) G01R 31/28 (2006.01) H03K 3/84 (2006.01) H03M 13/09 (2006.01)

Patent

CA 1265252

ABSTRACT OF THE DISCLOSURE A circuit is disclosed which combines the functions of a cyclic redundancy check code (CRCC) generator and a pseudo-random number generator in such a way that common elements are shared rather than duplicated. A 16-stage shift register and two linear feedback paths are included for the CRCC and pseudo- random number generators. A control section of the circuit controls the mode of operation of the circuit according to the state of a mode control signal. A signal on a clear line resets the shift register or initializes it with a selected value depending on the state of the mode control signal. The mode control signal also controls the input of data on a data line and the output of generated CRC and pseudo-random access codes on output lines.

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