Technique for high speed PRBS generation
AssigneeLightscape Networks Ltd.
InventorsJacob Ruthstein, Lev Litinsky, Ronen Sommer
Life of this patent
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Abstract
A method and a generator are described for high speed generation of an S-bit long pattern of a PRBS sequence to be periodically burst on to a bus of width S. The technique provides the calculation time being independent from the width S of the bus, and comprises calculation of all S bits of the PRBS pattern separately and in parallel by using previous PRBS patterns stored in a memory. For each bit to be generated, the generator performs a constant number N of logical operations required (by a polynomial defining the PRBS sequence.
Claims12
A method for high speed generating an S-bit long pattern of a PRBS sequence, to be periodically burst on to a bus of width S, the method comprising calculation of all S bits of the PRBS pattern separately and in parallel by using previous PRBS patterns stored in a memory and by performing, for each bit to be generated, a constant number N of logical operations required by a given polynomial, so that the calculation time is independent from the width S of the bus.
A generator for generating an S-bit long pattern of a PRBS sequence to be periodically burst on to a bus of width S, the generator comprising a memory and being capable of obtaining all bits of the PRBS pattern separately and in parallel by using previous PRBS patterns stored in the memory and performing for each bit of the pattern to be generated a constant number N of logical operations required by a given polynomial, thus achieving the shortened clock period of the generator, being independent from the width of the bus.
Dependencies are inferred from the claim text.