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Outline • Pseudorandom bit sequences (PRBSs) • Traditional PRBS generators • An asynchronous implementation > Design > Properties • Extension to other types of circuits A. Chow - Mar 14 2007 ASYNC 2007 2
Properties & Applications of PRBSs • A statistically “random” bit sequence > Behaves like noise > Carries an equal number of 1's and 0's > Has near zero correlation with other PRBSs • Useful for > Testing I/O channels > Cryptography > Spread-spectrum communication systems A. Chow - Mar 14 2007 ASYNC 2007 3
Page 1: A Configurable Asynchronous Pseudor
Page 5 and 6: Generating a PRBS Using a Linear Fe
Page 7 and 8: Feedback Tap Sequence Notation •
Page 9 and 10: An Asynchronous PRBS Generator •
Page 11 and 12: Two-Tap PRBS Generator GasP Control
Page 13 and 14: Two-Tap PRBS Generator Example •
Page 19 and 20: Configurability • Async control d
Page 21 and 22: Generating All Patterns for N ≤ 7
Page 27 and 28: Throughput and I/O • Throughput v
Page 29 and 30: Extension • Example: Cyclic Redun

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