PRBS generator runs at 1.5 Gbps

摘要

PRBS (pseudorandom-bina-ry-sequence), or PN (pseudo-noise), generators find a broad range of applications in digital-data trans-rnmission (Reference 1). These circuits often comprise simple shift registers with feedback that can serve as test sources for serial-data links. As theirrnname implies, the output sequence is not truly random and in fact repeats after 2~N— 1 bits, where N denotes the shift register's length. Polynomial notation, in which the polynomial order corresponds to the shift register's length and, thus,the PRBS' period provides a convenient method of describing the sequence.