Parallel pseudo-random generator for emulating a serial pseudo-random generator and method for carrying out same
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United States of America Patent
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Jul 9, 1991
Grant Date -
N/A
app pub date -
May 12, 1989
filing date -
May 12, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A parallel pseudo-random generator emulates a serial pseudo-random generator which in turn is defined by a polynomial of the type 1+x.sup.M + . . . +x.sup.P ; that is, wherein the serial outputs are generated such that the next serial output value is based upon an Exclusive OR combination of at least two preceding serial output values. The parallel pseudo-random generator comprises latches and Exclusive OR gates, the number of latches and Exclusive OR gates each being at least equal to the polynomial order of the serial pseudo-random generator defining polynomial. The outputs of the latches represent the outputs of the parallel pseudo-random generator and may be used to scramble data on parallel data lines. A method is disclosed for determining the interconnects between the latch outputs and the Exclusive OR gate inputs based upon the number of latches and the serial pseudo-random generator defining polynomial.
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