Method and circuit for testing transmission paths

Details Method and circuit for testing transmission paths Method and circuit for testing transmission paths

1991-02-07

1993-07-13

Canney, Vincent P.

Excavating

371 24, 371 251, G01R 3128

Patent

active

052280420

ABSTRACT:
A circuit for testing the integrity of transmission paths includes a first linear feedback shift register (LFSR) adapted to generate a periodic sequence of pseudo random test data for transmission on the transmission paths. A second LFSR synchronizes to the transmitted test data after being provided with a seed value corresponding to a transmitted data word. After synchronization, the second LFSR is set to a free running mode and independently generates a pseudo random sequence of patterns corresponding to the sequence generated by the first LFSR. A comparator compares the pseudo random data generated by the second LFSR with the pseudo random data received from the transmission paths. If a mismatch occurs a signal indicating an error condition is asserted.

REFERENCES:
patent: 4827476 (1989-05-01), Garcia
patent: 5001713 (1991-03-01), Whetsel

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