Circuit combining functions of cyclic redundancy check code and

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

1986-09-18

1988-09-13

Atkinson, Charles E.

Excavating

364717, 371 37, G06F 1110, H03K 384

Patent

active

047714298

ABSTRACT:
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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