![]() ![]() So in the example above on each clock cycle B4 is the output bit b0-b3 get shifted up and a new bit is generated by XOR-ing bit 4 and bit 1 this new bit gets inserted into b0. So all bits get shifted up and the least significant bit is generated using the feedback of the current registers bits. In this type of LFSR the feedback only affects the first bit. There are multiple variations of LFSR but in this article we will be focusing on the most basic type the Fibonacci LFSR. The LFSRĪn LFSR is a shift register like we have seen in previous articles, except that the bits besides shifting are also affected by the other bits in the register - this effect is what is referred to as the feedback. This is part 7 of our on-going series on the Tang Nano 9K.
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