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Chapter 3. An LFSR Specification
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#include <stdio.h>
>>>;
record=<<<
printf(LSE_time_print_args(LSE_time_now));
printf(": bit1=%d\n", *datap);
>>>;
};
collector STORED_DATA on "bit0" {
header=<<<
#include <stdio.h>
>>>;
record=<<<
printf(LSE_time_print_args(LSE_time_now));
printf(": bit0=%d\n", *datap);
>>>;
};
The LFSR in Example 3-1, when clocked, moves bits from the higher order state elements (delay2 being the
MSb) to the lower order state elements. The outputs of the lower-order two bits are xor-ed together and the result
is fed back into the most significant bit (see Figure 3-1).
Figure 3-1. A 3-bit LFSR
D Q
bit2
D Q
bit1
D Q
bit0
A visualization of this configuration is shown if Figure 3-2.
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