![]() ![]() ![]() ![]() For n-bit LFSR, the longest possible sequence is given byĬlarification: For n-bit LFSR, the longest possible sequence of patterns is given by 2 n-1.ħ. The initial state in LFSR must be initialized to zero.Ĭlarification: The initial state in LFSR must be initialized to any state other than zero so that it goes through all possible states except all 0’s before repeating the sequence.Ħ. Which uses the highest operating frequency?Ĭlarification: Internal feedback LFSR provides implementation with highest operating frequency for use in high performance application.Ĭlarification: External feedback LFSR has more uniformity of the shift register and this is its main advantage.ĥ. In external feedback LFSR, shift registers and feedback paths are combined usingĬlarification: In the external feedback linear feedback shift register method, the shift registers and the feedback path are linearly combined via EX-OR gates.ģ. Linear feedback shift register occupies more area.Ĭlarification: Linear feedback shift register method is more area efficient than counters and other methods and requires less combinational logic.Ģ. VLSI Multiple Choice Questions on “LFSR-1”.ġ. ![]()
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